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Northern Trust Corp. – ‘10-K’ for 12/31/23 – ‘EX-101.SCH’

On:  Tuesday, 2/27/24, at 5:23pm ET   ·   For:  12/31/23   ·   Accession #:  73124-24-73   ·   File #:  1-36609

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  As Of               Filer                 Filing    For·On·As Docs:Size

 2/27/24  Northern Trust Corp.              10-K       12/31/23  199:35M

Annual Report   —   Form 10-K   —   SEA’34

Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-K        Annual Report                                       HTML   7.49M 
 2: EX-4.3      Instrument Defining the Rights of Security Holders  HTML    101K 
 4: EX-10.16    Material Contract                                   HTML     92K 
 3: EX-10.5     Material Contract                                   HTML    136K 
 5: EX-21       Subsidiaries List                                   HTML     92K 
 6: EX-23       Consent of Expert or Counsel                        HTML     51K 
10: EX-97       Clawback Policy re: Recovery of Erroneously         HTML     73K 
                Awarded Compensation                                             
 7: EX-31.1     Certification -- §302 - SOA'02                      HTML     56K 
 8: EX-31.2     Certification -- §302 - SOA'02                      HTML     56K 
 9: EX-32       Certification -- §906 - SOA'02                      HTML     53K 
16: R1          Cover Page                                          HTML    120K 
17: R2          Audit Information                                   HTML     56K 
18: R3          Consolidated Balance Sheets                         HTML    178K 
19: R4          Consolidated Balance Sheet (Parenthetical)          HTML     75K 
20: R5          Consolidated Statements of Income                   HTML    149K 
21: R6          Consolidated Statements of Comprehensive Income     HTML     83K 
22: R7          Consolidated Statements of Changes in               HTML     98K 
                Stockholders' Equity                                             
23: R8          Consolidated Statements of Changes in               HTML     53K 
                Stockholders' Equity (Parenthetical)                             
24: R9          Consolidated Statements of Cash Flows               HTML    184K 
25: R10         Summary of Significant Accounting Policies          HTML    113K 
26: R11         Recent Accounting Pronouncements                    HTML     65K 
27: R12         Fair Value Measurements                             HTML    287K 
28: R13         Securities                                          HTML    450K 
29: R14         Loans                                               HTML    563K 
30: R15         Allowance for Credit Losses                         HTML    278K 
31: R16         Concentrations of Credit Risk                       HTML     82K 
32: R17         Buildings and Equipment                             HTML     75K 
33: R18         Lease Commitments                                   HTML     86K 
34: R19         Goodwill and Other Intangibles                      HTML     79K 
35: R20         Deposits                                            HTML     70K 
36: R21         Senior Notes and Long-Term Debt                     HTML     94K 
37: R22         Stockholders' Equity                                HTML     74K 
38: R23         Accumulated Other Comprehensive Income (Loss)       HTML    166K 
39: R24         Net Income per Common Share                         HTML     76K 
40: R25         Revenue from Contracts with Clients                 HTML     92K 
41: R26         Net Interest Income                                 HTML     86K 
42: R27         Other Operating Income                              HTML     78K 
43: R28         Other Operating Expense                             HTML     78K 
44: R29         Income Taxes                                        HTML    127K 
45: R30         Employee Benefits                                   HTML    294K 
46: R31         Share-Based Compensation Plans                      HTML    112K 
47: R32         Cash-Based Compensation Plans                       HTML     53K 
48: R33         Commitments and Contingent Liabilities              HTML    101K 
49: R34         Derivative Financial Instruments                    HTML    193K 
50: R35         Securities Purchased Under Agreements to Resell     HTML     74K 
                and Securities Sold Under Agreements to Repurchase               
51: R36         Offsetting of Assets and Liabilities                HTML    161K 
52: R37         Variable Interest Entities                          HTML     71K 
53: R38         Pledged Assets, Accepted Collateral and Restricted  HTML     72K 
                Assets                                                           
54: R39         Restrictions on Subsidiary Dividends and Loans or   HTML     57K 
                Advances                                                         
55: R40         Reporting Segments and Related Information          HTML    199K 
56: R41         Regulatory Capital Requirements                     HTML    135K 
57: R42         Northern Trust Corporation (Corporation only)       HTML    139K 
58: R43         Subsequent Events                                   HTML     54K 
59: R44         Pay vs Performance Disclosure                       HTML     63K 
60: R45         Insider Trading Arrangements                        HTML     57K 
61: R46         Summary of Significant Accounting Policies          HTML    170K 
                (Policies)                                                       
62: R47         Fair Value Measurements (Tables)                    HTML    282K 
63: R48         Securities (Tables)                                 HTML    453K 
64: R49         Loans (Tables)                                      HTML    557K 
65: R50         Allowance for Credit Losses (Tables)                HTML    275K 
66: R51         Concentrations of Credit Risk (Tables)              HTML     79K 
67: R52         Buildings and Equipment (Tables)                    HTML     74K 
68: R53         Lease Commitments (Tables)                          HTML     88K 
69: R54         Goodwill and Other Intangibles (Tables)             HTML     81K 
70: R55         Deposits (Tables)                                   HTML     68K 
71: R56         Senior Notes and Long-Term Debt (Tables)            HTML     91K 
72: R57         Stockholders' Equity (Tables)                       HTML     61K 
73: R58         Accumulated Other Comprehensive Income (Loss)       HTML    168K 
                (Tables)                                                         
74: R59         Net Income per Common Share (Tables)                HTML     76K 
75: R60         Revenue from Contracts with Clients Revenue from    HTML     85K 
                Contracts with Clients (Tables)                                  
76: R61         Net Interest Income (Tables)                        HTML     86K 
77: R62         Other Operating Income (Tables)                     HTML     63K 
78: R63         Other Operating Expense (Tables)                    HTML     65K 
79: R64         Income Taxes (Tables)                               HTML    129K 
80: R65         Employee Benefits (Tables)                          HTML    284K 
81: R66         Share-Based Compensation Plans (Tables)             HTML    121K 
82: R67         Commitments and Contingent Liabilities (Tables)     HTML     78K 
83: R68         Derivative Financial Instruments (Tables)           HTML    189K 
84: R69         Securities Purchased Under Agreements to Resell     HTML     75K 
                and Securities Sold Under Agreements to Repurchase               
                (Tables)                                                         
85: R70         Offsetting of Assets and Liabilities (Tables)       HTML    158K 
86: R71         Organization, Consolidation and Presentation of     HTML     68K 
                Financial Statements (Tables)                                    
87: R72         Pledged Assets, Accepted Collateral and Restricted  HTML     71K 
                Assets (Tables)                                                  
88: R73         Reporting Segments and Related Information          HTML    190K 
                (Tables)                                                         
89: R74         Regulatory Capital Requirements (Tables)            HTML    130K 
90: R75         Northern Trust Corporation (Corporation only)       HTML    145K 
                (Tables)                                                         
91: R76         Summary of Significant Accounting Policies -        HTML     71K 
                Narrative (Detail)                                               
92: R77         Fair Value Measurements - Narrative (Detail)        HTML     76K 
93: R78         Fair Value Measurements - Level 3 Significant       HTML     78K 
                Unobservable Inputs (Detail)                                     
94: R79         Fair Value Measurements - Recurring Basis           HTML    220K 
                Hierarchy Leveling (Detail)                                      
95: R80         Fair Value Measurements - Changes in Level 3        HTML     66K 
                Liabilities (Detail)                                             
96: R81         Fair Value Measurements - Valuation Techniques,     HTML     65K 
                Significant Unobservable Inputs, Quantitative                    
                Information Non-recurring Basis (Detail)                         
97: R82         Fair Value Measurements (Fair Value of Financial    HTML    131K 
                Instruments) (Details)                                           
98: R83         Securities (Reconciliation of Amortized Cost to     HTML    110K 
                Fair Value of Securities Available for Sale)                     
                (Details)                                                        
99: R84         Securities (Remaining Maturity of Securities        HTML    218K 
                Available for Sale and Held to Maturity) (Details)               
100: R85         Securities (Securities with Unrealized Losses)      HTML    119K  
                (Details)                                                        
101: R86         Securities (Narrative) (Details)                    HTML    128K  
102: R87         Securities (Reconciliation of Amortized Cost to     HTML    102K  
                Fair Value of Securities Held to Maturity)                       
                (Details)                                                        
103: R88         Securities (Credit Quality Indicators) (Details)    HTML    159K  
104: R89         Securities (Investment Security Gains and Losses)   HTML     58K  
                (Details)                                                        
105: R90         Securities (Investment Security Gains and Losses    HTML     74K  
                by Security Type) (Details)                                      
106: R91         Loans (Loans and Leases) (Details)                  HTML     81K  
107: R92         Loans (Narrative) (Details)                         HTML    112K  
108: R93         Loans (Credit Quality Indicator At Amortized Cost   HTML    277K  
                By Origination Year) (Details)                                   
109: R94         Loans (Delinquency Status) (Details)                HTML    152K  
110: R95         Loans (Loan Modifications Made To Borrowers         HTML     93K  
                Experiencing Financial Difficulty) (Details)                     
111: R96         Loans (Troubled Debt Restructurings) (Details)      HTML     76K  
112: R97         Allowance for Credit Losses (Narrative) (Details)   HTML     63K  
113: R98         Allowance for Credit Losses (Changes in Allowance   HTML    117K  
                for Credit Losses) (Details)                                     
114: R99         Allowance for Credit Losses (Changes in Allowance   HTML     90K  
                for Credit Losses Related to Loans) (Details)                    
115: R100        Allowance for Credit Losses (Recorded Investments   HTML     93K  
                in Loans) (Details)                                              
116: R101        Allowance for Credit Losses (Changes in The         HTML     89K  
                Allowance for Credit Losses Related to Debt                      
                Securities Held to Maturity) (Details)                           
117: R102        Allowance for Credit Losses (Accrued Interest)      HTML     72K  
                (Details)                                                        
118: R103        Concentrations of Credit Risk - Narrative (Detail)  HTML     81K  
119: R104        Concentrations of Credit Risk (Details)             HTML     67K  
120: R105        Concentrations of Credit Risk - Commercial Real     HTML     69K  
                Estate Loans (Detail)                                            
121: R106        Buildings and Equipment (Detail)                    HTML     71K  
122: R107        Buildings and Equipment - Narrative (Detail)        HTML     53K  
123: R108        Lease Commitments - Lease Cost Components (Detail)  HTML     60K  
124: R109        Lease Commitments - Maturity of Lease Liability     HTML     70K  
                (Detail)                                                         
125: R110        Lease Commitments - Narrative (Detail)              HTML     52K  
126: R111        Lease Commitments - Assets and Liabilities          HTML     61K  
                (Detail)                                                         
127: R112        Lease Commitments - Weighted-Average Remaining      HTML     56K  
                Lease Term and Discount Rate (Detail)                            
128: R113        Lease Commitments - Supplemental Cash Flow          HTML     57K  
                Information (Detail)                                             
129: R114        Goodwill and Other Intangibles - Goodwill (Detail)  HTML     63K  
130: R115        Goodwill and Other Intangibles - Other Intangible   HTML     63K  
                Assets and Capitalized Software (Detail)                         
131: R116        Goodwill and Other Intangibles - Narrative          HTML     70K  
                (Detail)                                                         
132: R117        Deposits - Scheduled Maturity of Total Time         HTML     72K  
                Deposits (Details)                                               
133: R118        Deposits - Narrative (Details)                      HTML     57K  
134: R119        Senior Notes and Long-Term Debt - Senior Notes      HTML     77K  
                (Detail)                                                         
135: R120        Senior Notes and Long-Term Debt - Long-Term Debt    HTML     96K  
                (Detail)                                                         
136: R121        Stockholders' Equity - Narrative (Detail)           HTML    111K  
137: R122        Stockholders' Equity - Shares of Common Stock       HTML     64K  
                (Detail)                                                         
138: R123        Accumulated Other Comprehensive Income (Loss) -     HTML     77K  
                Summary of Changes in Accumulated Other                          
                Comprehensive Income (Loss) (Detail)                             
139: R124        Accumulated Other Comprehensive Income (Loss) -     HTML    136K  
                Details of Changes in Accumulated Other                          
                Comprehensive Income (Loss) (Detail)                             
140: R125        Net Income per Common Share - Net Income Per        HTML    106K  
                Common Share (Detail)                                            
141: R126        Revenue from Contracts with Clients (Revenue        HTML     84K  
                Disaggregated by Major Source) (Details)                         
142: R127        Revenue from Contracts with Clients (Narrative)     HTML     67K  
                (Details)                                                        
143: R128        Revenue from Contracts with Clients (Client         HTML     63K  
                Receivables) (Details)                                           
144: R129        Net Interest Income (Net Interest Income)           HTML     96K  
                (Details)                                                        
145: R130        Other Operating Income - (Detail)                   HTML     64K  
146: R131        Other Operating Expense (Details)                   HTML     67K  
147: R132        Income Taxes - Income Taxes (Detail)                HTML     74K  
148: R133        Income Taxes - Narrative (Detail)                   HTML     78K  
149: R134        Income Taxes - Unrecognized Tax Benefits (Detail)   HTML     63K  
150: R135        Income Taxes - Provision for Income Taxes (Detail)  HTML     79K  
151: R136        Income Taxes - Tax Charges and Benefits Recorded    HTML     56K  
                Directly to Stockholders' Equity (Detail)                        
152: R137        Income Taxes - Deferred Tax Assets and Liabilities  HTML     87K  
                (Detail)                                                         
153: R138        Employee Benefits - Narrative (Detail)              HTML    165K  
154: R139        Employee Benefits - Employee Benefit Plan Status    HTML     84K  
                (Detail)                                                         
155: R140        Employee Benefits - Amounts Included in             HTML     77K  
                Accumulated Other Comprehensive Income (Detail)                  
156: R141        Employee Benefits - Net Periodic Pension Expense    HTML    111K  
                (Detail)                                                         
157: R142        Employee Benefits - Change in Projected Benefit     HTML     89K  
                Obligation (Detail)                                              
158: R143        Employee Benefits - Estimated Future Benefit        HTML     73K  
                Payments (Detail)                                                
159: R144        Employee Benefits - Change In Plan Assets (Detail)  HTML     79K  
160: R145        Employee Benefits - Fair Value of U.S. Pension      HTML    139K  
                Plan Assets (Detail)                                             
161: R146        Share-Based Compensation Plans - Total              HTML     68K  
                Compensation Expense for Share-Based Payment                     
                Arrangements to Employees (Detail)                               
162: R147        Share-Based Compensation Plans - Narrative          HTML    129K  
                (Detail)                                                         
163: R148        Share-Based Compensation Plans - Stock Options      HTML     62K  
                Granted, Vested, and Exercised (Detail)                          
164: R149        Share-Based Compensation Plans - Status of Stock    HTML     96K  
                Options and Changes (Detail)                                     
165: R150        Share-Based Compensation Plans - Outstanding        HTML     70K  
                Restricted Stock Unit Awards (Detail)                            
166: R151        Share-Based Compensation Plans - Nonvested          HTML     80K  
                Restricted Stock Unit Awards (Detail)                            
167: R152        Cash-Based Compensation Plans - Narrative (Detail)  HTML     53K  
168: R153        Commitments and Contingent Liabilities - Summary    HTML     86K  
                of Off-Balance Sheet Financial Instruments                       
                (Details)                                                        
169: R154        Commitments and Contingent Liabilities - Narrative  HTML    120K  
                (Detail)                                                         
170: R155        Derivative Financial Instruments - Notional and     HTML    121K  
                Fair Value Amounts of Derivative Financial                       
                Instruments (Detail)                                             
171: R156        Derivative Financial Instruments - Narrative        HTML     63K  
                (Detail)                                                         
172: R157        Derivative Financial Instruments - Location and     HTML     90K  
                Amount of Fair Value Hedge Derivative Gains and                  
                Losses Recorded in Income (Detail)                               
173: R158        Derivative Financial Instruments - Hedged Items in  HTML     73K  
                Fair Value (Detail)                                              
174: R159        Derivative Financial Instruments - Location and     HTML     73K  
                Amount of Gains and Losses Recorded in Income for                
                Derivatives not Designated as Hedging Under GAAP                 
                (Detail)                                                         
175: R160        Securities Purchased Under Agreements to Resell     HTML     62K  
                and Securities Sold Under Agreements to Repurchase               
                - Securities Purchased under Agreements to Resell                
                (Detail)                                                         
176: R161        Securities Purchased Under Agreements to Resell     HTML     64K  
                and Securities Sold Under Agreements to Repurchase               
                - Securities Sold under Agreements to Repurchase                 
                (Detail)                                                         
177: R162        Securities Purchased Under Agreements to Resell     HTML     63K  
                and Securities Sold Under Agreements to Repurchase               
                - Repurchase Agreements Accounted for as Secured                 
                Borrowings (Details)                                             
178: R163        Offsetting of Assets and Liabilities - Offsetting   HTML    122K  
                of Derivative Assets and Securities Purchased                    
                Under Agreements to Resell (Detail)                              
179: R164        Offsetting of Assets and Liabilities - Offsetting   HTML    124K  
                of Derivative Liabilities and Securities Sold                    
                Under Agreements to Repurchase (Details)                         
180: R165        Offsetting of Assets and Liabilities - Narrative    HTML     71K  
                (Details)                                                        
181: R166        Variable Interest Entities - Narrative (Detail)     HTML     66K  
182: R167        Variable Interest Entities (Summary) (Details)      HTML     87K  
183: R168        Pledged Assets, Accepted Collateral and Restricted  HTML     63K  
                Assets - Narrative (Detail)                                      
184: R169        Pledged Assets, Accepted Collateral and Restricted  HTML     60K  
                Assets (Type of Pledged Assets) (Details)                        
185: R170        Pledged Assets, Accepted Collateral and Restricted  HTML     64K  
                Assets - Accepted Collateral (Details)                           
186: R171        Restrictions on Subsidiary Dividends and Loans or   HTML     53K  
                Advances (Details)                                               
187: R172        Reporting Segments and Related Information -        HTML     55K  
                Narrative (Detail)                                               
188: R173        Reporting Segments and Related Information -        HTML    113K  
                Earnings Contribution of Northern Trust's                        
                Reporting Segments (Detail)                                      
189: R174        Reporting Segments and Related Information -        HTML    115K  
                Distribution of Total Assets and Operating                       
                Performance (Detail)                                             
190: R175        Regulatory Capital Requirements - Risk-Based        HTML    117K  
                Capital Amounts and Ratios (Detail)                              
191: R176        Northern Trust Corporation (Corporation only) -     HTML    129K  
                Condensed Balance Sheet (Detail)                                 
192: R177        Northern Trust Corporation (Corporation only) -     HTML    119K  
                Condensed Statement of Income (Detail)                           
193: R178        Northern Trust Corporation (Corporation only) -     HTML    122K  
                Condensed Statement of Cash Flows (Detail)                       
194: R179        Subsequent Events (Details)                         HTML     64K  
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<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="ConsolidatedStatementsofChangesinStockholdersEquityParenthetical" roleURI="http://www.northerntrust.com/role/ConsolidatedStatementsofChangesinStockholdersEquityParenthetical">
<link:definition> 0000008 - Statement - Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="ConsolidatedStatementsofCashFlows" roleURI="http://www.northerntrust.com/role/ConsolidatedStatementsofCashFlows">
<link:definition> 0000009 - Statement - Consolidated Statements of Cash Flows </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SummaryofSignificantAccountingPolicies" roleURI="http://www.northerntrust.com/role/SummaryofSignificantAccountingPolicies">
<link:definition> 0000010 - Disclosure - Summary of Significant Accounting Policies </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="RecentAccountingPronouncements" roleURI="http://www.northerntrust.com/role/RecentAccountingPronouncements">
<link:definition> 0000011 - Disclosure - Recent Accounting Pronouncements </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="FairValueMeasurements" roleURI="http://www.northerntrust.com/role/FairValueMeasurements">
<link:definition> 0000012 - Disclosure - Fair Value Measurements </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="Securities" roleURI="http://www.northerntrust.com/role/Securities">
<link:definition> 0000013 - Disclosure - Securities </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="Loans" roleURI="http://www.northerntrust.com/role/Loans">
<link:definition> 0000014 - Disclosure - Loans </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="AllowanceforCreditLosses" roleURI="http://www.northerntrust.com/role/AllowanceforCreditLosses">
<link:definition> 0000015 - Disclosure - Allowance for Credit Losses </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="ConcentrationsofCreditRisk" roleURI="http://www.northerntrust.com/role/ConcentrationsofCreditRisk">
<link:definition> 0000016 - Disclosure - Concentrations of Credit Risk </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="BuildingsandEquipment" roleURI="http://www.northerntrust.com/role/BuildingsandEquipment">
<link:definition> 0000017 - Disclosure - Buildings and Equipment </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="LeaseCommitments" roleURI="http://www.northerntrust.com/role/LeaseCommitments">
<link:definition> 0000018 - Disclosure - Lease Commitments </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="GoodwillandOtherIntangibles" roleURI="http://www.northerntrust.com/role/GoodwillandOtherIntangibles">
<link:definition> 0000019 - Disclosure - Goodwill and Other Intangibles </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="Deposits" roleURI="http://www.northerntrust.com/role/Deposits">
<link:definition> 0000020 - Disclosure - Deposits </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="SeniorNotesandLongTermDebt" roleURI="http://www.northerntrust.com/role/SeniorNotesandLongTermDebt">
<link:definition> 0000021 - Disclosure - Senior Notes and Long-Term Debt </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="StockholdersEquity" roleURI="http://www.northerntrust.com/role/StockholdersEquity">
<link:definition> 0000022 - Disclosure - Stockholders' Equity </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="AccumulatedOtherComprehensiveIncomeLoss" roleURI="http://www.northerntrust.com/role/AccumulatedOtherComprehensiveIncomeLoss">
<link:definition> 0000023 - Disclosure - Accumulated Other Comprehensive Income (Loss) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="NetIncomeperCommonShare" roleURI="http://www.northerntrust.com/role/NetIncomeperCommonShare">
<link:definition> 0000024 - Disclosure - Net Income per Common Share </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="RevenuefromContractswithClients" roleURI="http://www.northerntrust.com/role/RevenuefromContractswithClients">
<link:definition> 0000025 - Disclosure - Revenue from Contracts with Clients </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="NetInterestIncome" roleURI="http://www.northerntrust.com/role/NetInterestIncome">
<link:definition> 0000026 - Disclosure - Net Interest Income </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="OtherOperatingIncome" roleURI="http://www.northerntrust.com/role/OtherOperatingIncome">
<link:definition> 0000027 - Disclosure - Other Operating Income </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="OtherOperatingExpense" roleURI="http://www.northerntrust.com/role/OtherOperatingExpense">
<link:definition> 0000028 - Disclosure - Other Operating Expense </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="IncomeTaxes" roleURI="http://www.northerntrust.com/role/IncomeTaxes">
<link:definition> 0000029 - Disclosure - Income Taxes </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="EmployeeBenefits" roleURI="http://www.northerntrust.com/role/EmployeeBenefits">
<link:definition> 0000030 - Disclosure - Employee Benefits </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="ShareBasedCompensationPlans" roleURI="http://www.northerntrust.com/role/ShareBasedCompensationPlans">
<link:definition> 0000031 - Disclosure - Share-Based Compensation Plans </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="CashBasedCompensationPlans" roleURI="http://www.northerntrust.com/role/CashBasedCompensationPlans">
<link:definition> 0000032 - Disclosure - Cash-Based Compensation Plans </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="CommitmentsandContingentLiabilities" roleURI="http://www.northerntrust.com/role/CommitmentsandContingentLiabilities">
<link:definition> 0000033 - Disclosure - Commitments and Contingent Liabilities </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="DerivativeFinancialInstruments" roleURI="http://www.northerntrust.com/role/DerivativeFinancialInstruments">
<link:definition> 0000034 - Disclosure - Derivative Financial Instruments </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SecuritiesPurchasedUnderAgreementstoResellandSecuritiesSoldUnderAgreementstoRepurchase" roleURI="http://www.northerntrust.com/role/SecuritiesPurchasedUnderAgreementstoResellandSecuritiesSoldUnderAgreementstoRepurchase">
<link:definition> 0000035 - Disclosure - Securities Purchased Under Agreements to Resell and Securities Sold Under Agreements to Repurchase </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="OffsettingofAssetsandLiabilities" roleURI="http://www.northerntrust.com/role/OffsettingofAssetsandLiabilities">
<link:definition> 0000036 - Disclosure - Offsetting of Assets and Liabilities </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="VariableInterestEntities" roleURI="http://www.northerntrust.com/role/VariableInterestEntities">
<link:definition> 0000037 - Disclosure - Variable Interest Entities </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="PledgedAssetsAcceptedCollateralandRestrictedAssets" roleURI="http://www.northerntrust.com/role/PledgedAssetsAcceptedCollateralandRestrictedAssets">
<link:definition> 0000038 - Disclosure - Pledged Assets, Accepted Collateral and Restricted Assets </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="RestrictionsonSubsidiaryDividendsandLoansorAdvances" roleURI="http://www.northerntrust.com/role/RestrictionsonSubsidiaryDividendsandLoansorAdvances">
<link:definition> 0000039 - Disclosure - Restrictions on Subsidiary Dividends and Loans or Advances </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="ReportingSegmentsandRelatedInformation" roleURI="http://www.northerntrust.com/role/ReportingSegmentsandRelatedInformation">
<link:definition> 0000040 - Disclosure - Reporting Segments and Related Information </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="RegulatoryCapitalRequirements" roleURI="http://www.northerntrust.com/role/RegulatoryCapitalRequirements">
<link:definition> 0000041 - Disclosure - Regulatory Capital Requirements </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="NorthernTrustCorporationCorporationonly" roleURI="http://www.northerntrust.com/role/NorthernTrustCorporationCorporationonly">
<link:definition> 0000042 - Disclosure - Northern Trust Corporation (Corporation only) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="SubsequentEvents" roleURI="http://www.northerntrust.com/role/SubsequentEvents">
<link:definition> 0000043 - Disclosure - Subsequent Events </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SummaryofSignificantAccountingPoliciesPolicies" roleURI="http://www.northerntrust.com/role/SummaryofSignificantAccountingPoliciesPolicies">
<link:definition> 9954471 - Disclosure - Summary of Significant Accounting Policies (Policies) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="FairValueMeasurementsTables" roleURI="http://www.northerntrust.com/role/FairValueMeasurementsTables">
<link:definition> 9954472 - Disclosure - Fair Value Measurements (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="SecuritiesTables" roleURI="http://www.northerntrust.com/role/SecuritiesTables">
<link:definition> 9954473 - Disclosure - Securities (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="LoansTables" roleURI="http://www.northerntrust.com/role/LoansTables">
<link:definition> 9954474 - Disclosure - Loans (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="AllowanceforCreditLossesTables" roleURI="http://www.northerntrust.com/role/AllowanceforCreditLossesTables">
<link:definition> 9954475 - Disclosure - Allowance for Credit Losses (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="ConcentrationsofCreditRiskTables" roleURI="http://www.northerntrust.com/role/ConcentrationsofCreditRiskTables">
<link:definition> 9954476 - Disclosure - Concentrations of Credit Risk (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="BuildingsandEquipmentTables" roleURI="http://www.northerntrust.com/role/BuildingsandEquipmentTables">
<link:definition> 9954477 - Disclosure - Buildings and Equipment (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="LeaseCommitmentsTables" roleURI="http://www.northerntrust.com/role/LeaseCommitmentsTables">
<link:definition> 9954478 - Disclosure - Lease Commitments (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="GoodwillandOtherIntangiblesTables" roleURI="http://www.northerntrust.com/role/GoodwillandOtherIntangiblesTables">
<link:definition> 9954479 - Disclosure - Goodwill and Other Intangibles (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="DepositsTables" roleURI="http://www.northerntrust.com/role/DepositsTables">
<link:definition> 9954480 - Disclosure - Deposits (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="SeniorNotesandLongTermDebtTables" roleURI="http://www.northerntrust.com/role/SeniorNotesandLongTermDebtTables">
<link:definition> 9954481 - Disclosure - Senior Notes and Long-Term Debt (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="StockholdersEquityTables" roleURI="http://www.northerntrust.com/role/StockholdersEquityTables">
<link:definition> 9954482 - Disclosure - Stockholders' Equity (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="AccumulatedOtherComprehensiveIncomeLossTables" roleURI="http://www.northerntrust.com/role/AccumulatedOtherComprehensiveIncomeLossTables">
<link:definition> 9954483 - Disclosure - Accumulated Other Comprehensive Income (Loss) (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="NetIncomeperCommonShareTables" roleURI="http://www.northerntrust.com/role/NetIncomeperCommonShareTables">
<link:definition> 9954484 - Disclosure - Net Income per Common Share (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="RevenuefromContractswithClientsRevenuefromContractswithClientsTables" roleURI="http://www.northerntrust.com/role/RevenuefromContractswithClientsRevenuefromContractswithClientsTables">
<link:definition> 9954485 - Disclosure - Revenue from Contracts with Clients Revenue from Contracts with Clients (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="NetInterestIncomeTables" roleURI="http://www.northerntrust.com/role/NetInterestIncomeTables">
<link:definition> 9954486 - Disclosure - Net Interest Income (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="OtherOperatingIncomeTables" roleURI="http://www.northerntrust.com/role/OtherOperatingIncomeTables">
<link:definition> 9954487 - Disclosure - Other Operating Income (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="OtherOperatingExpenseTables" roleURI="http://www.northerntrust.com/role/OtherOperatingExpenseTables">
<link:definition> 9954488 - Disclosure - Other Operating Expense (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="IncomeTaxesTables" roleURI="http://www.northerntrust.com/role/IncomeTaxesTables">
<link:definition> 9954489 - Disclosure - Income Taxes (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="EmployeeBenefitsTables" roleURI="http://www.northerntrust.com/role/EmployeeBenefitsTables">
<link:definition> 9954490 - Disclosure - Employee Benefits (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="ShareBasedCompensationPlansTables" roleURI="http://www.northerntrust.com/role/ShareBasedCompensationPlansTables">
<link:definition> 9954491 - Disclosure - Share-Based Compensation Plans (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="CommitmentsandContingentLiabilitiesTables" roleURI="http://www.northerntrust.com/role/CommitmentsandContingentLiabilitiesTables">
<link:definition> 9954492 - Disclosure - Commitments and Contingent Liabilities (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="DerivativeFinancialInstrumentsTables" roleURI="http://www.northerntrust.com/role/DerivativeFinancialInstrumentsTables">
<link:definition> 9954493 - Disclosure - Derivative Financial Instruments (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SecuritiesPurchasedUnderAgreementstoResellandSecuritiesSoldUnderAgreementstoRepurchaseTables" roleURI="http://www.northerntrust.com/role/SecuritiesPurchasedUnderAgreementstoResellandSecuritiesSoldUnderAgreementstoRepurchaseTables">
<link:definition> 9954494 - Disclosure - Securities Purchased Under Agreements to Resell and Securities Sold Under Agreements to Repurchase (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="OffsettingofAssetsandLiabilitiesTables" roleURI="http://www.northerntrust.com/role/OffsettingofAssetsandLiabilitiesTables">
<link:definition> 9954495 - Disclosure - Offsetting of Assets and Liabilities (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="OrganizationConsolidationandPresentationofFinancialStatementsTables" roleURI="http://www.northerntrust.com/role/OrganizationConsolidationandPresentationofFinancialStatementsTables">
<link:definition> 9954496 - Disclosure - Organization, Consolidation and Presentation of Financial Statements (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="PledgedAssetsAcceptedCollateralandRestrictedAssetsTables" roleURI="http://www.northerntrust.com/role/PledgedAssetsAcceptedCollateralandRestrictedAssetsTables">
<link:definition> 9954497 - Disclosure - Pledged Assets, Accepted Collateral and Restricted Assets (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="ReportingSegmentsandRelatedInformationTables" roleURI="http://www.northerntrust.com/role/ReportingSegmentsandRelatedInformationTables">
<link:definition> 9954498 - Disclosure - Reporting Segments and Related Information (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="RegulatoryCapitalRequirementsTables" roleURI="http://www.northerntrust.com/role/RegulatoryCapitalRequirementsTables">
<link:definition> 9954499 - Disclosure - Regulatory Capital Requirements (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="NorthernTrustCorporationCorporationonlyTables" roleURI="http://www.northerntrust.com/role/NorthernTrustCorporationCorporationonlyTables">
<link:definition> 9954500 - Disclosure - Northern Trust Corporation (Corporation only) (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SummaryofSignificantAccountingPoliciesNarrativeDetail" roleURI="http://www.northerntrust.com/role/SummaryofSignificantAccountingPoliciesNarrativeDetail">
<link:definition> 9954501 - Disclosure - Summary of Significant Accounting Policies - Narrative (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="FairValueMeasurementsNarrativeDetail" roleURI="http://www.northerntrust.com/role/FairValueMeasurementsNarrativeDetail">
<link:definition> 9954502 - Disclosure - Fair Value Measurements - Narrative (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="FairValueMeasurementsLevel3SignificantUnobservableInputsDetail" roleURI="http://www.northerntrust.com/role/FairValueMeasurementsLevel3SignificantUnobservableInputsDetail">
<link:definition> 9954503 - Disclosure - Fair Value Measurements - Level 3 Significant Unobservable Inputs (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="FairValueMeasurementsRecurringBasisHierarchyLevelingDetail" roleURI="http://www.northerntrust.com/role/FairValueMeasurementsRecurringBasisHierarchyLevelingDetail">
<link:definition> 9954504 - Disclosure - Fair Value Measurements - Recurring Basis Hierarchy Leveling (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="FairValueMeasurementsChangesinLevel3LiabilitiesDetail" roleURI="http://www.northerntrust.com/role/FairValueMeasurementsChangesinLevel3LiabilitiesDetail">
<link:definition> 9954505 - Disclosure - Fair Value Measurements - Changes in Level 3 Liabilities (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="FairValueMeasurementsValuationTechniquesSignificantUnobservableInputsQuantitativeInformationNonrecurringBasisDetail" roleURI="http://www.northerntrust.com/role/FairValueMeasurementsValuationTechniquesSignificantUnobservableInputsQuantitativeInformationNonrecurringBasisDetail">
<link:definition> 9954506 - Disclosure - Fair Value Measurements - Valuation Techniques, Significant Unobservable Inputs, Quantitative Information Non-recurring Basis (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="FairValueMeasurementsFairValueofFinancialInstrumentsDetails" roleURI="http://www.northerntrust.com/role/FairValueMeasurementsFairValueofFinancialInstrumentsDetails">
<link:definition> 9954507 - Disclosure - Fair Value Measurements (Fair Value of Financial Instruments) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SecuritiesReconciliationofAmortizedCosttoFairValueofSecuritiesAvailableforSaleDetails" roleURI="http://www.northerntrust.com/role/SecuritiesReconciliationofAmortizedCosttoFairValueofSecuritiesAvailableforSaleDetails">
<link:definition> 9954508 - Disclosure - Securities (Reconciliation of Amortized Cost to Fair Value of Securities Available for Sale) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SecuritiesRemainingMaturityofSecuritiesAvailableforSaleandHeldtoMaturityDetails" roleURI="http://www.northerntrust.com/role/SecuritiesRemainingMaturityofSecuritiesAvailableforSaleandHeldtoMaturityDetails">
<link:definition> 9954509 - Disclosure - Securities (Remaining Maturity of Securities Available for Sale and Held to Maturity) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SecuritiesSecuritieswithUnrealizedLossesDetails" roleURI="http://www.northerntrust.com/role/SecuritiesSecuritieswithUnrealizedLossesDetails">
<link:definition> 9954510 - Disclosure - Securities (Securities with Unrealized Losses) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SecuritiesNarrativeDetails" roleURI="http://www.northerntrust.com/role/SecuritiesNarrativeDetails">
<link:definition> 9954511 - Disclosure - Securities (Narrative) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SecuritiesReconciliationofAmortizedCosttoFairValueofSecuritiesHeldtoMaturityDetails" roleURI="http://www.northerntrust.com/role/SecuritiesReconciliationofAmortizedCosttoFairValueofSecuritiesHeldtoMaturityDetails">
<link:definition> 9954512 - Disclosure - Securities (Reconciliation of Amortized Cost to Fair Value of Securities Held to Maturity) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SecuritiesCreditQualityIndicatorsDetails" roleURI="http://www.northerntrust.com/role/SecuritiesCreditQualityIndicatorsDetails">
<link:definition> 9954513 - Disclosure - Securities (Credit Quality Indicators) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SecuritiesInvestmentSecurityGainsandLossesDetails" roleURI="http://www.northerntrust.com/role/SecuritiesInvestmentSecurityGainsandLossesDetails">
<link:definition> 9954514 - Disclosure - Securities (Investment Security Gains and Losses) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SecuritiesInvestmentSecurityGainsandLossesbySecurityTypeDetails" roleURI="http://www.northerntrust.com/role/SecuritiesInvestmentSecurityGainsandLossesbySecurityTypeDetails">
<link:definition> 9954515 - Disclosure - Securities (Investment Security Gains and Losses by Security Type) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="LoansLoansandLeasesDetails" roleURI="http://www.northerntrust.com/role/LoansLoansandLeasesDetails">
<link:definition> 9954516 - Disclosure - Loans (Loans and Leases) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="LoansNarrativeDetails" roleURI="http://www.northerntrust.com/role/LoansNarrativeDetails">
<link:definition> 9954517 - Disclosure - Loans (Narrative) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="LoansCreditQualityIndicatorAtAmortizedCostByOriginationYearDetails" roleURI="http://www.northerntrust.com/role/LoansCreditQualityIndicatorAtAmortizedCostByOriginationYearDetails">
<link:definition> 9954518 - Disclosure - Loans (Credit Quality Indicator At Amortized Cost By Origination Year) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="LoansDelinquencyStatusDetails" roleURI="http://www.northerntrust.com/role/LoansDelinquencyStatusDetails">
<link:definition> 9954519 - Disclosure - Loans (Delinquency Status) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="LoansLoanModificationsMadeToBorrowersExperiencingFinancialDifficultyDetails" roleURI="http://www.northerntrust.com/role/LoansLoanModificationsMadeToBorrowersExperiencingFinancialDifficultyDetails">
<link:definition> 9954520 - Disclosure - Loans (Loan Modifications Made To Borrowers Experiencing Financial Difficulty) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="LoansTroubledDebtRestructuringsDetails" roleURI="http://www.northerntrust.com/role/LoansTroubledDebtRestructuringsDetails">
<link:definition> 9954521 - Disclosure - Loans (Troubled Debt Restructurings) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="AllowanceforCreditLossesNarrativeDetails" roleURI="http://www.northerntrust.com/role/AllowanceforCreditLossesNarrativeDetails">
<link:definition> 9954522 - Disclosure - Allowance for Credit Losses (Narrative) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="AllowanceforCreditLossesChangesinAllowanceforCreditLossesDetails" roleURI="http://www.northerntrust.com/role/AllowanceforCreditLossesChangesinAllowanceforCreditLossesDetails">
<link:definition> 9954523 - Disclosure - Allowance for Credit Losses (Changes in Allowance for Credit Losses) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="AllowanceforCreditLossesChangesinAllowanceforCreditLossesDetails_1" roleURI="http://www.northerntrust.com/role/AllowanceforCreditLossesChangesinAllowanceforCreditLossesDetails_1">
<link:definition> 9954523 - Disclosure - Allowance for Credit Losses (Changes in Allowance for Credit Losses) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="AllowanceforCreditLossesChangesinAllowanceforCreditLossesRelatedtoLoansDetails" roleURI="http://www.northerntrust.com/role/AllowanceforCreditLossesChangesinAllowanceforCreditLossesRelatedtoLoansDetails">
<link:definition> 9954524 - Disclosure - Allowance for Credit Losses (Changes in Allowance for Credit Losses Related to Loans) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="AllowanceforCreditLossesRecordedInvestmentsinLoansDetails" roleURI="http://www.northerntrust.com/role/AllowanceforCreditLossesRecordedInvestmentsinLoansDetails">
<link:definition> 9954525 - Disclosure - Allowance for Credit Losses (Recorded Investments in Loans) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="AllowanceforCreditLossesChangesinTheAllowanceforCreditLossesRelatedtoDebtSecuritiesHeldtoMaturityDetails" roleURI="http://www.northerntrust.com/role/AllowanceforCreditLossesChangesinTheAllowanceforCreditLossesRelatedtoDebtSecuritiesHeldtoMaturityDetails">
<link:definition> 9954526 - Disclosure - Allowance for Credit Losses (Changes in The Allowance for Credit Losses Related to Debt Securities Held to Maturity) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="AllowanceforCreditLossesAccruedInterestDetails" roleURI="http://www.northerntrust.com/role/AllowanceforCreditLossesAccruedInterestDetails">
<link:definition> 9954527 - Disclosure - Allowance for Credit Losses (Accrued Interest) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="ConcentrationsofCreditRiskNarrativeDetail" roleURI="http://www.northerntrust.com/role/ConcentrationsofCreditRiskNarrativeDetail">
<link:definition> 9954528 - Disclosure - Concentrations of Credit Risk - Narrative (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="ConcentrationsofCreditRiskDetails" roleURI="http://www.northerntrust.com/role/ConcentrationsofCreditRiskDetails">
<link:definition> 9954529 - Disclosure - Concentrations of Credit Risk (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="ConcentrationsofCreditRiskCommercialRealEstateLoansDetail" roleURI="http://www.northerntrust.com/role/ConcentrationsofCreditRiskCommercialRealEstateLoansDetail">
<link:definition> 9954530 - Disclosure - Concentrations of Credit Risk - Commercial Real Estate Loans (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="BuildingsandEquipmentDetail" roleURI="http://www.northerntrust.com/role/BuildingsandEquipmentDetail">
<link:definition> 9954531 - Disclosure - Buildings and Equipment (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="BuildingsandEquipmentNarrativeDetail" roleURI="http://www.northerntrust.com/role/BuildingsandEquipmentNarrativeDetail">
<link:definition> 9954532 - Disclosure - Buildings and Equipment - Narrative (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="LeaseCommitmentsLeaseCostComponentsDetail" roleURI="http://www.northerntrust.com/role/LeaseCommitmentsLeaseCostComponentsDetail">
<link:definition> 9954533 - Disclosure - Lease Commitments - Lease Cost Components (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="LeaseCommitmentsMaturityofLeaseLiabilityDetail" roleURI="http://www.northerntrust.com/role/LeaseCommitmentsMaturityofLeaseLiabilityDetail">
<link:definition> 9954534 - Disclosure - Lease Commitments - Maturity of Lease Liability (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="LeaseCommitmentsMaturityofLeaseLiabilityDetail_1" roleURI="http://www.northerntrust.com/role/LeaseCommitmentsMaturityofLeaseLiabilityDetail_1">
<link:definition> 9954534 - Disclosure - Lease Commitments - Maturity of Lease Liability (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="LeaseCommitmentsNarrativeDetail" roleURI="http://www.northerntrust.com/role/LeaseCommitmentsNarrativeDetail">
<link:definition> 9954535 - Disclosure - Lease Commitments - Narrative (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="LeaseCommitmentsAssetsandLiabilitiesDetail" roleURI="http://www.northerntrust.com/role/LeaseCommitmentsAssetsandLiabilitiesDetail">
<link:definition> 9954536 - Disclosure - Lease Commitments - Assets and Liabilities (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="LeaseCommitmentsWeightedAverageRemainingLeaseTermandDiscountRateDetail" roleURI="http://www.northerntrust.com/role/LeaseCommitmentsWeightedAverageRemainingLeaseTermandDiscountRateDetail">
<link:definition> 9954537 - Disclosure - Lease Commitments - Weighted-Average Remaining Lease Term and Discount Rate (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="LeaseCommitmentsSupplementalCashFlowInformationDetail" roleURI="http://www.northerntrust.com/role/LeaseCommitmentsSupplementalCashFlowInformationDetail">
<link:definition> 9954538 - Disclosure - Lease Commitments - Supplemental Cash Flow Information (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="GoodwillandOtherIntangiblesGoodwillDetail" roleURI="http://www.northerntrust.com/role/GoodwillandOtherIntangiblesGoodwillDetail">
<link:definition> 9954539 - Disclosure - Goodwill and Other Intangibles - Goodwill (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="GoodwillandOtherIntangiblesOtherIntangibleAssetsandCapitalizedSoftwareDetail" roleURI="http://www.northerntrust.com/role/GoodwillandOtherIntangiblesOtherIntangibleAssetsandCapitalizedSoftwareDetail">
<link:definition> 9954540 - Disclosure - Goodwill and Other Intangibles - Other Intangible Assets and Capitalized Software (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="GoodwillandOtherIntangiblesNarrativeDetail" roleURI="http://www.northerntrust.com/role/GoodwillandOtherIntangiblesNarrativeDetail">
<link:definition> 9954541 - Disclosure - Goodwill and Other Intangibles - Narrative (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="DepositsScheduledMaturityofTotalTimeDepositsDetails" roleURI="http://www.northerntrust.com/role/DepositsScheduledMaturityofTotalTimeDepositsDetails">
<link:definition> 9954542 - Disclosure - Deposits - Scheduled Maturity of Total Time Deposits (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="DepositsNarrativeDetails" roleURI="http://www.northerntrust.com/role/DepositsNarrativeDetails">
<link:definition> 9954543 - Disclosure - Deposits - Narrative (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SeniorNotesandLongTermDebtSeniorNotesDetail" roleURI="http://www.northerntrust.com/role/SeniorNotesandLongTermDebtSeniorNotesDetail">
<link:definition> 9954544 - Disclosure - Senior Notes and Long-Term Debt - Senior Notes (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="SeniorNotesandLongTermDebtLongTermDebtDetail" roleURI="http://www.northerntrust.com/role/SeniorNotesandLongTermDebtLongTermDebtDetail">
<link:definition> 9954545 - Disclosure - Senior Notes and Long-Term Debt - Long-Term Debt (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="StockholdersEquityNarrativeDetail" roleURI="http://www.northerntrust.com/role/StockholdersEquityNarrativeDetail">
<link:definition> 9954546 - Disclosure - Stockholders' Equity - Narrative (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="StockholdersEquitySharesofCommonStockDetail" roleURI="http://www.northerntrust.com/role/StockholdersEquitySharesofCommonStockDetail">
<link:definition> 9954547 - Disclosure - Stockholders' Equity - Shares of Common Stock (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="AccumulatedOtherComprehensiveIncomeLossSummaryofChangesinAccumulatedOtherComprehensiveIncomeLossDetail" roleURI="http://www.northerntrust.com/role/AccumulatedOtherComprehensiveIncomeLossSummaryofChangesinAccumulatedOtherComprehensiveIncomeLossDetail">
<link:definition> 9954548 - Disclosure - Accumulated Other Comprehensive Income (Loss) - Summary of Changes in Accumulated Other Comprehensive Income (Loss) (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
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<link:roleType id="AccumulatedOtherComprehensiveIncomeLossDetailsofChangesinAccumulatedOtherComprehensiveIncomeLossDetail" roleURI="http://www.northerntrust.com/role/AccumulatedOtherComprehensiveIncomeLossDetailsofChangesinAccumulatedOtherComprehensiveIncomeLossDetail">
<link:definition> 9954549 - Disclosure - Accumulated Other Comprehensive Income (Loss) - Details of Changes in Accumulated Other Comprehensive Income (Loss) (Detail) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 9954549 - Disclosure - Accumulated Other Comprehensive Income (Loss) - Details of Changes in Accumulated Other Comprehensive Income (Loss) (Detail) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 9954550 - Disclosure - Net Income per Common Share - Net Income Per Common Share (Detail) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="RevenuefromContractswithClientsRevenueDisaggregatedbyMajorSourceDetails" roleURI="http://www.northerntrust.com/role/RevenuefromContractswithClientsRevenueDisaggregatedbyMajorSourceDetails">
<link:definition> 9954551 - Disclosure - Revenue from Contracts with Clients (Revenue Disaggregated by Major Source) (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="RevenuefromContractswithClientsNarrativeDetails" roleURI="http://www.northerntrust.com/role/RevenuefromContractswithClientsNarrativeDetails">
<link:definition> 9954552 - Disclosure - Revenue from Contracts with Clients (Narrative) (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="RevenuefromContractswithClientsClientReceivablesDetails" roleURI="http://www.northerntrust.com/role/RevenuefromContractswithClientsClientReceivablesDetails">
<link:definition> 9954553 - Disclosure - Revenue from Contracts with Clients (Client Receivables) (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="NetInterestIncomeNetInterestIncomeDetails" roleURI="http://www.northerntrust.com/role/NetInterestIncomeNetInterestIncomeDetails">
<link:definition> 9954554 - Disclosure - Net Interest Income (Net Interest Income) (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="OtherOperatingIncomeDetail" roleURI="http://www.northerntrust.com/role/OtherOperatingIncomeDetail">
<link:definition> 9954555 - Disclosure - Other Operating Income - (Detail) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="OtherOperatingExpenseDetails" roleURI="http://www.northerntrust.com/role/OtherOperatingExpenseDetails">
<link:definition> 9954556 - Disclosure - Other Operating Expense (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="IncomeTaxesIncomeTaxesDetail" roleURI="http://www.northerntrust.com/role/IncomeTaxesIncomeTaxesDetail">
<link:definition> 9954557 - Disclosure - Income Taxes - Income Taxes (Detail) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="IncomeTaxesNarrativeDetail" roleURI="http://www.northerntrust.com/role/IncomeTaxesNarrativeDetail">
<link:definition> 9954558 - Disclosure - Income Taxes - Narrative (Detail) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="IncomeTaxesUnrecognizedTaxBenefitsDetail" roleURI="http://www.northerntrust.com/role/IncomeTaxesUnrecognizedTaxBenefitsDetail">
<link:definition> 9954559 - Disclosure - Income Taxes - Unrecognized Tax Benefits (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="IncomeTaxesProvisionforIncomeTaxesDetail" roleURI="http://www.northerntrust.com/role/IncomeTaxesProvisionforIncomeTaxesDetail">
<link:definition> 9954560 - Disclosure - Income Taxes - Provision for Income Taxes (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="IncomeTaxesTaxChargesandBenefitsRecordedDirectlytoStockholdersEquityDetail" roleURI="http://www.northerntrust.com/role/IncomeTaxesTaxChargesandBenefitsRecordedDirectlytoStockholdersEquityDetail">
<link:definition> 9954561 - Disclosure - Income Taxes - Tax Charges and Benefits Recorded Directly to Stockholders' Equity (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="IncomeTaxesDeferredTaxAssetsandLiabilitiesDetail" roleURI="http://www.northerntrust.com/role/IncomeTaxesDeferredTaxAssetsandLiabilitiesDetail">
<link:definition> 9954562 - Disclosure - Income Taxes - Deferred Tax Assets and Liabilities (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="EmployeeBenefitsNarrativeDetail" roleURI="http://www.northerntrust.com/role/EmployeeBenefitsNarrativeDetail">
<link:definition> 9954563 - Disclosure - Employee Benefits - Narrative (Detail) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="EmployeeBenefitsEmployeeBenefitPlanStatusDetail" roleURI="http://www.northerntrust.com/role/EmployeeBenefitsEmployeeBenefitPlanStatusDetail">
<link:definition> 9954564 - Disclosure - Employee Benefits - Employee Benefit Plan Status (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="EmployeeBenefitsAmountsIncludedinAccumulatedOtherComprehensiveIncomeDetail" roleURI="http://www.northerntrust.com/role/EmployeeBenefitsAmountsIncludedinAccumulatedOtherComprehensiveIncomeDetail">
<link:definition> 9954565 - Disclosure - Employee Benefits - Amounts Included in Accumulated Other Comprehensive Income (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType id="EmployeeBenefitsNetPeriodicPensionExpenseDetail" roleURI="http://www.northerntrust.com/role/EmployeeBenefitsNetPeriodicPensionExpenseDetail">
<link:definition> 9954566 - Disclosure - Employee Benefits - Net Periodic Pension Expense (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="EmployeeBenefitsChangeinProjectedBenefitObligationDetail" roleURI="http://www.northerntrust.com/role/EmployeeBenefitsChangeinProjectedBenefitObligationDetail">
<link:definition> 9954567 - Disclosure - Employee Benefits - Change in Projected Benefit Obligation (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="EmployeeBenefitsEstimatedFutureBenefitPaymentsDetail" roleURI="http://www.northerntrust.com/role/EmployeeBenefitsEstimatedFutureBenefitPaymentsDetail">
<link:definition> 9954568 - Disclosure - Employee Benefits - Estimated Future Benefit Payments (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="EmployeeBenefitsChangeInPlanAssetsDetail" roleURI="http://www.northerntrust.com/role/EmployeeBenefitsChangeInPlanAssetsDetail">
<link:definition> 9954569 - Disclosure - Employee Benefits - Change In Plan Assets (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="EmployeeBenefitsFairValueofUSPensionPlanAssetsDetail" roleURI="http://www.northerntrust.com/role/EmployeeBenefitsFairValueofUSPensionPlanAssetsDetail">
<link:definition> 9954570 - Disclosure - Employee Benefits - Fair Value of U.S. Pension Plan Assets (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="ShareBasedCompensationPlansTotalCompensationExpenseforShareBasedPaymentArrangementstoEmployeesDetail" roleURI="http://www.northerntrust.com/role/ShareBasedCompensationPlansTotalCompensationExpenseforShareBasedPaymentArrangementstoEmployeesDetail">
<link:definition> 9954571 - Disclosure - Share-Based Compensation Plans - Total Compensation Expense for Share-Based Payment Arrangements to Employees (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="ShareBasedCompensationPlansNarrativeDetail" roleURI="http://www.northerntrust.com/role/ShareBasedCompensationPlansNarrativeDetail">
<link:definition> 9954572 - Disclosure - Share-Based Compensation Plans - Narrative (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="ShareBasedCompensationPlansStockOptionsGrantedVestedandExercisedDetail" roleURI="http://www.northerntrust.com/role/ShareBasedCompensationPlansStockOptionsGrantedVestedandExercisedDetail">
<link:definition> 9954573 - Disclosure - Share-Based Compensation Plans - Stock Options Granted, Vested, and Exercised (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="ShareBasedCompensationPlansStatusofStockOptionsandChangesDetail" roleURI="http://www.northerntrust.com/role/ShareBasedCompensationPlansStatusofStockOptionsandChangesDetail">
<link:definition> 9954574 - Disclosure - Share-Based Compensation Plans - Status of Stock Options and Changes (Detail) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="ShareBasedCompensationPlansOutstandingRestrictedStockUnitAwardsDetail" roleURI="http://www.northerntrust.com/role/ShareBasedCompensationPlansOutstandingRestrictedStockUnitAwardsDetail">
<link:definition> 9954575 - Disclosure - Share-Based Compensation Plans - Outstanding Restricted Stock Unit Awards (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="ShareBasedCompensationPlansNonvestedRestrictedStockUnitAwardsDetail" roleURI="http://www.northerntrust.com/role/ShareBasedCompensationPlansNonvestedRestrictedStockUnitAwardsDetail">
<link:definition> 9954576 - Disclosure - Share-Based Compensation Plans - Nonvested Restricted Stock Unit Awards (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="CashBasedCompensationPlansNarrativeDetail" roleURI="http://www.northerntrust.com/role/CashBasedCompensationPlansNarrativeDetail">
<link:definition> 9954577 - Disclosure - Cash-Based Compensation Plans - Narrative (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="CommitmentsandContingentLiabilitiesSummaryofOffBalanceSheetFinancialInstrumentsDetails" roleURI="http://www.northerntrust.com/role/CommitmentsandContingentLiabilitiesSummaryofOffBalanceSheetFinancialInstrumentsDetails">
<link:definition> 9954578 - Disclosure - Commitments and Contingent Liabilities - Summary of Off-Balance Sheet Financial Instruments (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
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<link:roleType id="CommitmentsandContingentLiabilitiesNarrativeDetail" roleURI="http://www.northerntrust.com/role/CommitmentsandContingentLiabilitiesNarrativeDetail">
<link:definition> 9954579 - Disclosure - Commitments and Contingent Liabilities - Narrative (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 9954580 - Disclosure - Derivative Financial Instruments - Notional and Fair Value Amounts of Derivative Financial Instruments (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="DerivativeFinancialInstrumentsNarrativeDetail" roleURI="http://www.northerntrust.com/role/DerivativeFinancialInstrumentsNarrativeDetail">
<link:definition> 9954581 - Disclosure - Derivative Financial Instruments - Narrative (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="DerivativeFinancialInstrumentsLocationandAmountofFairValueHedgeDerivativeGainsandLossesRecordedinIncomeDetail" roleURI="http://www.northerntrust.com/role/DerivativeFinancialInstrumentsLocationandAmountofFairValueHedgeDerivativeGainsandLossesRecordedinIncomeDetail">
<link:definition> 9954582 - Disclosure - Derivative Financial Instruments - Location and Amount of Fair Value Hedge Derivative Gains and Losses Recorded in Income (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="DerivativeFinancialInstrumentsHedgedItemsinFairValueDetail" roleURI="http://www.northerntrust.com/role/DerivativeFinancialInstrumentsHedgedItemsinFairValueDetail">
<link:definition> 9954583 - Disclosure - Derivative Financial Instruments - Hedged Items in Fair Value (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 9954584 - Disclosure - Derivative Financial Instruments - Location and Amount of Gains and Losses Recorded in Income for Derivatives not Designated as Hedging Under GAAP (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 9954585 - Disclosure - Securities Purchased Under Agreements to Resell and Securities Sold Under Agreements to Repurchase - Securities Purchased under Agreements to Resell (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 9954586 - Disclosure - Securities Purchased Under Agreements to Resell and Securities Sold Under Agreements to Repurchase - Securities Sold under Agreements to Repurchase (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 9954587 - Disclosure - Securities Purchased Under Agreements to Resell and Securities Sold Under Agreements to Repurchase - Repurchase Agreements Accounted for as Secured Borrowings (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 9954588 - Disclosure - Offsetting of Assets and Liabilities - Offsetting of Derivative Assets and Securities Purchased Under Agreements to Resell (Detail) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:roleType id="OffsettingofAssetsandLiabilitiesOffsettingofDerivativeLiabilitiesandSecuritiesSoldUnderAgreementstoRepurchaseDetails" roleURI="http://www.northerntrust.com/role/OffsettingofAssetsandLiabilitiesOffsettingofDerivativeLiabilitiesandSecuritiesSoldUnderAgreementstoRepurchaseDetails">
<link:definition> 9954589 - Disclosure - Offsetting of Assets and Liabilities - Offsetting of Derivative Liabilities and Securities Sold Under Agreements to Repurchase (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="OffsettingofAssetsandLiabilitiesNarrativeDetails" roleURI="http://www.northerntrust.com/role/OffsettingofAssetsandLiabilitiesNarrativeDetails">
<link:definition> 9954590 - Disclosure - Offsetting of Assets and Liabilities - Narrative (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="VariableInterestEntitiesNarrativeDetail" roleURI="http://www.northerntrust.com/role/VariableInterestEntitiesNarrativeDetail">
<link:definition> 9954591 - Disclosure - Variable Interest Entities - Narrative (Detail) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:roleType id="VariableInterestEntitiesSummaryDetails" roleURI="http://www.northerntrust.com/role/VariableInterestEntitiesSummaryDetails">
<link:definition> 9954592 - Disclosure - Variable Interest Entities (Summary) (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 9954593 - Disclosure - Pledged Assets, Accepted Collateral and Restricted Assets - Narrative (Detail) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 9954594 - Disclosure - Pledged Assets, Accepted Collateral and Restricted Assets (Type of Pledged Assets) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="PledgedAssetsAcceptedCollateralandRestrictedAssetsAcceptedCollateralDetails" roleURI="http://www.northerntrust.com/role/PledgedAssetsAcceptedCollateralandRestrictedAssetsAcceptedCollateralDetails">
<link:definition> 9954595 - Disclosure - Pledged Assets, Accepted Collateral and Restricted Assets - Accepted Collateral (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:roleType id="RestrictionsonSubsidiaryDividendsandLoansorAdvancesDetails" roleURI="http://www.northerntrust.com/role/RestrictionsonSubsidiaryDividendsandLoansorAdvancesDetails">
<link:definition> 9954596 - Disclosure - Restrictions on Subsidiary Dividends and Loans or Advances (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="ReportingSegmentsandRelatedInformationNarrativeDetail" roleURI="http://www.northerntrust.com/role/ReportingSegmentsandRelatedInformationNarrativeDetail">
<link:definition> 9954597 - Disclosure - Reporting Segments and Related Information - Narrative (Detail) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="ReportingSegmentsandRelatedInformationEarningsContributionofNorthernTrustsReportingSegmentsDetail" roleURI="http://www.northerntrust.com/role/ReportingSegmentsandRelatedInformationEarningsContributionofNorthernTrustsReportingSegmentsDetail">
<link:definition> 9954598 - Disclosure - Reporting Segments and Related Information - Earnings Contribution of Northern Trust's Reporting Segments (Detail) </link:definition>
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<xs:element id="ntrs_SecuritiesSoldUnderAgreementsToRepurchaseMaximumMonthEndBalanceDuringPeriod" abstract="false" name="SecuritiesSoldUnderAgreementsToRepurchaseMaximumMonthEndBalanceDuringPeriod" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_OtherFinancialAssetsChangeInPresentValueExpenseReversal" abstract="false" name="OtherFinancialAssetsChangeInPresentValueExpenseReversal" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_FinancingReceivableAccrual" abstract="false" name="FinancingReceivableAccrual" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_OtherConsumerLoanMember" abstract="true" name="OtherConsumerLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_CreditRiskToBanksNonInterestBearingBalancesHeldAtBanks" abstract="false" name="CreditRiskToBanksNonInterestBearingBalancesHeldAtBanks" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_FixedRateCorporateSeniorNotes315PercentDueMay2029Member" abstract="true" name="FixedRateCorporateSeniorNotes315PercentDueMay2029Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_ForeignMunicipalAndProvincialBondsMember" abstract="true" name="ForeignMunicipalAndProvincialBondsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_NonbankSubsidiariesMember" abstract="true" name="NonbankSubsidiariesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_BanksIndustryMember" abstract="true" name="BanksIndustryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_LongTermDebtTableTextBlock" abstract="false" name="LongTermDebtTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
<xs:element id="ntrs_SecuritiesLendingMember" abstract="true" name="SecuritiesLendingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_SeriesDPreferredStockDepositarySharesMember" abstract="true" name="SeriesDPreferredStockDepositarySharesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFairValueGrantsInPeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFairValueGrantsInPeriod" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_FinancingReceivableNonaccrualIncludingOtherRealEstateOwned" abstract="false" name="FinancingReceivableNonaccrualIncludingOtherRealEstateOwned" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_SupplementalNonCashInformationAbstract" abstract="true" name="SupplementalNonCashInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="ntrs_ScheduleOfDefinedBenefitPlanChangeInPlanAssetsLineItems" abstract="true" name="ScheduleOfDefinedBenefitPlanChangeInPlanAssetsLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="ntrs_OtherAssetsExcludingDerivativesAndNonFinancialInstruments" abstract="false" name="OtherAssetsExcludingDerivativesAndNonFinancialInstruments" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_MoodysAndStandardPoorsBBBRatingMember" abstract="true" name="MoodysAndStandardPoorsBBBRatingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionAccumulatedLossWithCreditLoss" abstract="false" name="DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionAccumulatedLossWithCreditLoss" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_SecuritiesReceivedAsCollateralAtFairValue" abstract="false" name="SecuritiesReceivedAsCollateralAtFairValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_CommitmentsParticipatedToOthers" abstract="false" name="CommitmentsParticipatedToOthers" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_CommercialAndInstitutionalLoansMember" abstract="true" name="CommercialAndInstitutionalLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_OtherCustomerReceivablesMember" abstract="true" name="OtherCustomerReceivablesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOption" abstract="false" name="EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOption" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_AllowanceForCreditLosesRollForward" abstract="true" name="AllowanceForCreditLosesRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="ntrs_LoanServicingMember" abstract="true" name="LoanServicingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_InvestmentInConsolidatedSubsidiary" abstract="false" name="InvestmentInConsolidatedSubsidiary" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_InterestRevenueExpenseNetIncludingFullyTaxableEquivalentAdjustment" abstract="false" name="InterestRevenueExpenseNetIncludingFullyTaxableEquivalentAdjustment" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_DebtSecuritiesAndLoansMember" abstract="true" name="DebtSecuritiesAndLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ntrs_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTable" abstract="true" name="FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
<xs:element id="ntrs_OffsettingAssetsAndLiabilitiesDisclosureTextBlock" abstract="false" name="OffsettingAssetsAndLiabilitiesDisclosureTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
<xs:element id="ntrs_TimeDeposits250000OrMore" abstract="false" name="TimeDeposits250000OrMore" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_AssetsLesseeAbstract" abstract="true" name="AssetsLesseeAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="ntrs_SegmentReportingInformationConsolidatedAverageAssets" abstract="false" name="SegmentReportingInformationConsolidatedAverageAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_FixedRateCorporateSeniorNotes4PercentMember" abstract="true" name="FixedRateCorporateSeniorNotes4PercentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_DisclosureOfSecuritiesSoldUnderAgreementsToRepurchaseAndDerivativeLiabilitiesTableTextBlock" abstract="false" name="DisclosureOfSecuritiesSoldUnderAgreementsToRepurchaseAndDerivativeLiabilitiesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
<xs:element id="ntrs_LoansReceivableCommercialRealEstateCommercialMortgageApartmentsAndMultiFamily" abstract="false" name="LoansReceivableCommercialRealEstateCommercialMortgageApartmentsAndMultiFamily" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansTax" abstract="false" name="AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansTax" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_MoodysAndStandardPoorsAOrHigherRatingMember" abstract="true" name="MoodysAndStandardPoorsAOrHigherRatingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_AffordableHousingMember" abstract="true" name="AffordableHousingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_OtherFinancialAssetsCreditLossExpenseReversal" abstract="false" name="OtherFinancialAssetsCreditLossExpenseReversal" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_WealthManagementSegmentMember" abstract="true" name="WealthManagementSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_AccumulatedForeignCurrencyAdjustmentAttributabletoParentOtherMember" abstract="true" name="AccumulatedForeignCurrencyAdjustmentAttributabletoParentOtherMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_ProceedsFromPaymentsForFederalFundsSold" abstract="false" name="ProceedsFromPaymentsForFederalFundsSold" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_TotalDerivativeLiabilitiesNotSubjecttoaMasterNettingArrangementAbstract" abstract="true" name="TotalDerivativeLiabilitiesNotSubjecttoaMasterNettingArrangementAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="ntrs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndUnvestedGrantsInPeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndUnvestedGrantsInPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
<xs:element id="ntrs_ScheduleOfAccruedInterestTableTextBlock" abstract="false" name="ScheduleOfAccruedInterestTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
<xs:element id="ntrs_ProductsandServicesOtherOperatingIncomeMember" abstract="true" name="ProductsandServicesOtherOperatingIncomeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanOptionsOutstandingWeightedAverageRemainingVestingPeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanOptionsOutstandingWeightedAverageRemainingVestingPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
<xs:element id="ntrs_OtherOperatingExpensesTableTextBlock" abstract="false" name="OtherOperatingExpensesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
<xs:element id="ntrs_IndustryTypeDomain" abstract="true" name="IndustryTypeDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_LoansMeasurementInput" abstract="false" name="LoansMeasurementInput" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
<xs:element id="ntrs_SupplementaryLeverageCapitaltoAverageAssets" abstract="false" name="SupplementaryLeverageCapitaltoAverageAssets" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
<xs:element id="ntrs_ScheduleOfNetPeriodicBenefitCostsWeightedAverageAssumptionsTable" abstract="true" name="ScheduleOfNetPeriodicBenefitCostsWeightedAverageAssumptionsTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
<xs:element id="ntrs_FinancingReceivableExcludingAccruedInterestModifiedFinanciallyDistressed" abstract="false" name="FinancingReceivableExcludingAccruedInterestModifiedFinanciallyDistressed" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_PotentialExchangeOfferProgramNumberOfExchangeOffers" abstract="false" name="PotentialExchangeOfferProgramNumberOfExchangeOffers" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
<xs:element id="ntrs_StockConversionPeriodDomain" abstract="true" name="StockConversionPeriodDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ntrs_DebtSecuritiesHeldToMaturityPercentOfPortfolio" abstract="false" name="DebtSecuritiesHeldToMaturityPercentOfPortfolio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
<xs:element id="ntrs_CoveredBondsMember" abstract="true" name="CoveredBondsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_ClientSecuritySettlementReceivablesPolicyTextBlock" abstract="false" name="ClientSecuritySettlementReceivablesPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
<xs:element id="ntrs_MeasurementInputVisaClassAAppreciationMember" abstract="true" name="MeasurementInputVisaClassAAppreciationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_AllowanceForCreditLossExcludingAccruedInterestRecovery" abstract="false" name="AllowanceForCreditLossExcludingAccruedInterestRecovery" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_ClientSecuritySettlementReceivables" abstract="false" name="ClientSecuritySettlementReceivables" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_AllowanceForCreditLossExcludingAccruedInterest" abstract="false" name="AllowanceForCreditLossExcludingAccruedInterest" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_NetChangeInClientSecuritySettlementReceivables" abstract="false" name="NetChangeInClientSecuritySettlementReceivables" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_AOCIAccumulatedGainLossDebtSecuritiesAvailableForSaleInterestIncomeMember" abstract="true" name="AOCIAccumulatedGainLossDebtSecuritiesAvailableForSaleInterestIncomeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_StockIncentivePlan2012PlanAnd2002PlanMember" abstract="true" name="StockIncentivePlan2012PlanAnd2002PlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_PerformanceStockUnitsGranted201920202021Member" abstract="true" name="PerformanceStockUnitsGranted201920202021Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_LowerLimitOfGenerallyRequiredLoanToCollateralValueForResidentialRealEstateLoans" abstract="false" name="LowerLimitOfGenerallyRequiredLoanToCollateralValueForResidentialRealEstateLoans" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
<xs:element id="ntrs_FinancingReceivableTroubledDebtRestructuringPostmodificationUnpaidPrincipalBalance" abstract="false" name="FinancingReceivableTroubledDebtRestructuringPostmodificationUnpaidPrincipalBalance" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_OtherNoninterestIncome" abstract="false" name="OtherNoninterestIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_ShareBasedCompensationArrangementByShareBasedPaymentAwardPeriodOfTimeOptionsBecomeExercisable" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardPeriodOfTimeOptionsBecomeExercisable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
<xs:element id="ntrs_ChangeinUnrealizedGainLossonAmountsRelatedtoSettlement" abstract="false" name="ChangeinUnrealizedGainLossonAmountsRelatedtoSettlement" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_FinancingReceivableExcludingAccruedInterestModifiedWriteOff" abstract="false" name="FinancingReceivableExcludingAccruedInterestModifiedWriteOff" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_StandbyLettersOfCreditPolicyTextBlock" abstract="false" name="StandbyLettersOfCreditPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
<xs:element id="ntrs_SecuredByCashDepositsOrParticipatedToOthersMember" abstract="true" name="SecuredByCashDepositsOrParticipatedToOthersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_InvestmentManagementandAdvisoryMember" abstract="true" name="InvestmentManagementandAdvisoryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_IncomeTaxReconciliationLeveragedLeaseAdjustments" abstract="false" name="IncomeTaxReconciliationLeveragedLeaseAdjustments" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
<xs:element id="ntrs_ScheduleOfPensionExpectedFutureBenefitPaymentsTable" abstract="true" name="ScheduleOfPensionExpectedFutureBenefitPaymentsTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
<xs:element id="ntrs_ContractualMaturitiesTimeDeposits250000OrMoreYearTwo" abstract="false" name="ContractualMaturitiesTimeDeposits250000OrMoreYearTwo" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_PerformanceStockUnitsMember" abstract="true" name="PerformanceStockUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_OtherFinancialAssetsAccruedInterestAfterAllowanceForCreditLoss" abstract="false" name="OtherFinancialAssetsAccruedInterestAfterAllowanceForCreditLoss" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_OtherFinancialObligationsMember" abstract="true" name="OtherFinancialObligationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_SecuritiesSoldUnderAgreementsToRepurchaseAverageInterestRatePaidDuringPeriod" abstract="false" name="SecuritiesSoldUnderAgreementsToRepurchaseAverageInterestRatePaidDuringPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
<xs:element id="ntrs_AverageInterestBearingDepositsInFederalReserveBankForReserveRequirements" abstract="false" name="AverageInterestBearingDepositsInFederalReserveBankForReserveRequirements" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_AllowanceForCreditLossExcludingOffBalanceSheetCreditLossLiability" abstract="false" name="AllowanceForCreditLossExcludingOffBalanceSheetCreditLossLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_FinancingReceivableAllowanceForCreditLossesAndOffBalanceSheetCreditLossLiability" abstract="false" name="FinancingReceivableAllowanceForCreditLossesAndOffBalanceSheetCreditLossLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_NumberOfAdministratedTrustsServingAsTrusteeOn" abstract="false" name="NumberOfAdministratedTrustsServingAsTrusteeOn" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
<xs:element id="ntrs_LoansAndLeasesReceivableResidentialRealEstate" abstract="false" name="LoansAndLeasesReceivableResidentialRealEstate" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_FinancialAsset30To89DaysPastDueMember" abstract="true" name="FinancialAsset30To89DaysPastDueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ntrs_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMember" abstract="true" name="IncomeLossFromContinuingOperationsBeforeIncomeTaxesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_DeferredTaxAssetsCompensationAndBenefits" abstract="false" name="DeferredTaxAssetsCompensationAndBenefits" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_NumberofClientFocusedReportableSegment" abstract="false" name="NumberofClientFocusedReportableSegment" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
<xs:element id="ntrs_SalariesWagesAndIncentives" abstract="false" name="SalariesWagesAndIncentives" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_DefinedBenefitPlanBenefitObligationIncreaseDecreaseForAmortizationPeriodAdjustment" abstract="false" name="DefinedBenefitPlanBenefitObligationIncreaseDecreaseForAmortizationPeriodAdjustment" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_InvestmentsInCommunityDevelopmentProjectsCarryingAmountLiabilities" abstract="false" name="InvestmentsInCommunityDevelopmentProjectsCarryingAmountLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_LoansReceivableAbstract" abstract="true" name="LoansReceivableAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="ntrs_CreditLossExpenseReversalAndAvailableForSaleAllowanceForCreditLoss" abstract="false" name="CreditLossExpenseReversalAndAvailableForSaleAllowanceForCreditLoss" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_AvailableForSaleDebtSecuritiesPortfolioForSaleMember" abstract="true" name="AvailableForSaleDebtSecuritiesPortfolioForSaleMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_OtherFinancialAssetsAllowanceForCreditLossRecovery" abstract="false" name="OtherFinancialAssetsAllowanceForCreditLossRecovery" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_DerivativesSubjecttoaMasterNettingArrangementAbstract" abstract="true" name="DerivativesSubjecttoaMasterNettingArrangementAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="ntrs_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionWithCreditLoss" abstract="false" name="DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionWithCreditLoss" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_ScheduleOfNetPeriodicBenefitCostsWeightedAverageAssumptionsLineItems" abstract="true" name="ScheduleOfNetPeriodicBenefitCostsWeightedAverageAssumptionsLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="ntrs_AllowanceForCreditLossExcludingAccruedInterestWriteoff" abstract="false" name="AllowanceForCreditLossExcludingAccruedInterestWriteoff" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_FederalHomeLoanBank5.18PercentDueDecember2025Member" abstract="true" name="FederalHomeLoanBank5.18PercentDueDecember2025Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ntrs_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesUnobservableInputsAndQuantitativeInformationTableTextBlock" abstract="false" name="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesUnobservableInputsAndQuantitativeInformationTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
<xs:element id="ntrs_EmergingMarketDebtMember" abstract="true" name="EmergingMarketDebtMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_OtherCommercialLoanMember" abstract="true" name="OtherCommercialLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsConversionRatio" abstract="false" name="SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsConversionRatio" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
<xs:element id="ntrs_NetIncomeLossAllocatedToCommonStockholdersBasic" abstract="false" name="NetIncomeLossAllocatedToCommonStockholdersBasic" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_DeferredTaxLiabilitiesCompensationAndBenefits" abstract="false" name="DeferredTaxLiabilitiesCompensationAndBenefits" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_ChangeInFederalFundsPurchased" abstract="false" name="ChangeInFederalFundsPurchased" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationTerm" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
<xs:element id="ntrs_SecurityCommissionsandTradingIncome" abstract="false" name="SecurityCommissionsandTradingIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_HeldToMaturitySecuritiesTransferredFromAvailableForSale" abstract="false" name="HeldToMaturitySecuritiesTransferredFromAvailableForSale" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_NonUSTreasuryandGovernmentMember" abstract="true" name="NonUSTreasuryandGovernmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_RegulatoryCapitalRequirementsAbstractAbstract" abstract="true" name="RegulatoryCapitalRequirementsAbstractAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="ntrs_ContractualMaturitiesTimeDeposits250000OrMoreYearFive" abstract="false" name="ContractualMaturitiesTimeDeposits250000OrMoreYearFive" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_MoodysAndStandardPoorsARatingMember" abstract="true" name="MoodysAndStandardPoorsARatingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_AOCIAccumulatedGainLossDebtSecuritiesAvailableForSaleNetGainsMember" abstract="true" name="AOCIAccumulatedGainLossDebtSecuritiesAvailableForSaleNetGainsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_NumberOfSecuritiesUnrealizedLossesPosition" abstract="false" name="NumberOfSecuritiesUnrealizedLossesPosition" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
<xs:element id="ntrs_FairValueInvestmentsSeedCapitalInvestments" abstract="false" name="FairValueInvestmentsSeedCapitalInvestments" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_CommercialMortgagesAbstract" abstract="true" name="CommercialMortgagesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="ntrs_AuditInformationAbstract" abstract="true" name="AuditInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="ntrs_SecuritiesSoldUnderAgreementsToRepurchaseNettingImpact" abstract="false" name="SecuritiesSoldUnderAgreementsToRepurchaseNettingImpact" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_AccumulatedDefinedBenefitPlansAdjustmentNetSettlementGainLossAttributableToParentMember" abstract="true" name="AccumulatedDefinedBenefitPlansAdjustmentNetSettlementGainLossAttributableToParentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_BankOwnedLifeInsuranceMember" abstract="true" name="BankOwnedLifeInsuranceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
<xs:element id="ntrs_NorthernTrustFiduciaryServicesGuernseyLimitedMember" abstract="true" name="NorthernTrustFiduciaryServicesGuernseyLimitedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_CashCollateralDepositedWithDerivativeCounterpartiesNotOffsetAgainstDerivativeLiabilities" abstract="false" name="CashCollateralDepositedWithDerivativeCounterpartiesNotOffsetAgainstDerivativeLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_OtherFinancialAssetsAllowanceForCreditLossWriteoff" abstract="false" name="OtherFinancialAssetsAllowanceForCreditLossWriteoff" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_ScheduleOfDefinedBenefitPlanChangeInBenefitObligationTable" abstract="true" name="ScheduleOfDefinedBenefitPlanChangeInBenefitObligationTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
<xs:element id="ntrs_ScheduleOfDefinedBenefitPlanChangeInBenefitObligationLineItems" abstract="true" name="ScheduleOfDefinedBenefitPlanChangeInBenefitObligationLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
<xs:element id="ntrs_PotentialExchangeOfferProgramLengthOfTimeBetweenExchanges" abstract="false" name="PotentialExchangeOfferProgramLengthOfTimeBetweenExchanges" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
<xs:element id="ntrs_ContractualMaturitiesTimeDeposits250000OrMoreAfterYearFive" abstract="false" name="ContractualMaturitiesTimeDeposits250000OrMoreAfterYearFive" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_OtherTrustInvestmentAndOtherServicingFeesMember" abstract="true" name="OtherTrustInvestmentAndOtherServicingFeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_CreditLossExcludingAccruedInterestExpenseReversal" abstract="false" name="CreditLossExcludingAccruedInterestExpenseReversal" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_DebtSecuritiesHeldToMaturityExcludingAccruedInterestAllowanceForCreditLossWriteoffRecovery" abstract="false" name="DebtSecuritiesHeldToMaturityExcludingAccruedInterestAllowanceForCreditLossWriteoffRecovery" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_LoansReceivableCommercialRealEstateCommercialMortgageOffice" abstract="false" name="LoansReceivableCommercialRealEstateCommercialMortgageOffice" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
<xs:element id="ntrs_TrustFeesReceivableNetMember" abstract="true" name="TrustFeesReceivableNetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_FourToFiveInternalGradeMember" abstract="true" name="FourToFiveInternalGradeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_CommonStockConvertibleConversionPrice" abstract="false" name="CommonStockConvertibleConversionPrice" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
<xs:element id="ntrs_IndustryTypeAxis" abstract="true" name="IndustryTypeAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
<xs:element id="ntrs_CustomCompletionMember" abstract="true" name="CustomCompletionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
<xs:element id="ntrs_PercentageOfConsolidatedNetIncome" abstract="false" name="PercentageOfConsolidatedNetIncome" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
</xs:schema>


1 Subsequent Filing that References this Filing

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 4/23/24  Northern Trust Corp.              10-Q        3/31/24  127:23M


31 Previous Filings that this Filing References

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 5/02/23  Northern Trust Corp.              10-Q        3/31/23  126:25M
 2/28/23  Northern Trust Corp.              10-K       12/31/22  200:39M
11/18/22  Northern Trust Corp.              8-K:5,9    11/15/22   12:521K
 5/03/22  Northern Trust Corp.              8-K:5,9     5/03/22   13:264K                                   Donnelley … Solutions/FA
 5/03/22  Northern Trust Corp.              10-Q        3/31/22  124:25M
 2/28/22  Northern Trust Corp.              10-K       12/31/21  201:39M
10/26/21  Northern Trust Corp.              10-Q        9/30/21  126:30M
 4/27/21  Northern Trust Corp.              10-Q        3/31/21  123:26M
 2/23/21  Northern Trust Corp.              10-K       12/31/20  204:38M
 4/27/20  Northern Trust Corp.              10-Q        3/31/20  120:24M
11/05/19  Northern Trust Corp.              8-K:3,5,8,911/01/19   17:806K                                   Donnelley … Solutions/FA
 7/30/19  Northern Trust Corp.              10-Q        6/30/19  122:28M
 2/26/19  Northern Trust Corp.              10-K       12/31/18  191:34M
 2/27/18  Northern Trust Corp.              10-K       12/31/17  193:34M
 5/02/17  Northern Trust Corp.              10-Q        3/31/17  117:22M
 4/28/17  Northern Trust Corp.              8-K:5,9     4/25/17    3:208K
 4/26/17  Northern Trust Corp.              8-K:5,9     4/25/17    3:393K
 8/08/16  Northern Trust Corp.              8-K:3,5,8,9 8/04/16    6:489K                                   Donnelley … Solutions/FA
10/28/15  Northern Trust Corp.              10-Q        9/30/15  106:24M
 7/28/14  Northern Trust Corp.              10-Q        6/30/14  111:18M                                    Donnelley … Solutions/FA
 2/26/14  Northern Trust Corp.              10-K       12/31/13  205:33M                                    Donnelley … Solutions/FA
 4/30/12  Northern Trust Corp.              10-Q        3/31/12  110:18M                                    Donnelley … Solutions/FA
 4/19/12  Northern Trust Corp.              8-K:5,9     4/17/12    2:214K                                   Donnelley … Solutions/FA
 2/26/10  Northern Trust Corp.              10-K       12/31/09   67:10M                                    Donnelley … Solutions/FA
 4/24/09  Northern Trust Corp.              10-Q        3/31/09    9:1.1M                                   Donnelley … Solutions/FA
 2/27/09  Northern Trust Corp.              10-K       12/31/08   22:4.5M                                   Donnelley … Solutions/FA
 4/19/06  Northern Trust Corp.              8-K:5,9     4/18/06    4:237K                                   Donnelley … Solutions/FA
 8/10/00  Northern Trust Corp.              10-Q        6/30/00   13:1.1M                                   Donnelley Fin’l S… 03/FA
11/12/99  Northern Trust Corp.              10-Q        9/30/99   10:1.2M                                   Donnelley Fin’l S… 03/FA
 3/16/99  Northern Trust Corp.              10-K       12/31/98   11:605K                                   Donnelley Fin’l S… 03/FA
 8/12/98  Northern Trust Corp.              10-Q®       6/30/98   11:290K                                   Donnelley Fin’l S… 03/FA
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