| ACC | Active Citizenship Campaign |
| ACT | American College Testing |
| ACTS | Agency Check Tracking System |
| ADDA | Assistant District Director for Adjudications |
| ADDE | Assistant District Director for Examinations |
| ADDI | Assistant District Director for Investigations |
| ADDM | Assistant District Director for Management |
| AEM | Alternative Examination Method |
| AFGE | American Federation of Government Employees |
| A-File | Administrative File |
| AUO | Administratively Uncontrollable Overtime |
| AUSA | Assistant United States Attorney |
| CAL | Center for Applied Linguistics |
| CASAS | Comprehensive Adult Student Assessment System |
| CBO | Community-Based Organization |
| CCAC | Chicago Citizenship Assistance Council |
| CDO | Chicago District Office |
| CFR | Code of Federal Regulations |
| CIA | Central Intelligence Agency |
| CIMT | Crimes Involving Moral Turpitude |
| CIS | Central Index System |
| CJIS | Criminal Justice Information Services Division (FBI) |
| CLAIMS | Computer Linked Automated Information Management System |
| CPAU | Contractor Performance and Analysis Unit |
| CRO | Central Regional Office |
| CSC | California Service Center |
| CUSA | Citizenship USA Program |
| DADDA | Deputy Assistant District Director for Adjudications |
| DADDE | Deputy Assistant District Director for Examinations |
| DADDN | Deputy Assistant District Director for Naturalization |
| DAG | Deputy Attorney General |
| DAO | District Adjudications Officer |
| DD | District Director |
| DDD | Deputy District Director |
| DFS | Designated Fingerprinting Services |
| DMV | Department of Motor Vehicles |
| DOD | Department of Defense |
| DPC | Domestic Policy Council |
| EAC | Executive Associate Commissioner |
| EDS | Electronic Data Systems |
| ERO | Eastern Regional Office |
| ETS | Educational Testing Service |
| FBI | Federal Bureau of Investigation |
| FCCC | Fingerprint Clearance Coordination Center |
| FCO | File Control Office |
| FEB | Federal Executive Board |
| FEWG | Fingerprint Enhancement Working Group |
| FLETC | Federal Law Enforcement Training Center |
| FRC | Federal Records Center |
| FTR | File Transfer Request |
| GAO | General Accounting Office |
| GOV | Government Owned Vehicle |
| GSA | General Services Administration |
| GUI | Graphic User Interface |
| IACP | International Association of Chiefs of Police |
| IAF | Industrial Areas Foundation |
| IAFIS | Integrated Automated Fingerprint Information System |
| INA | Immigration and Nationality Act |
| INS | Immigration and Naturalization Service |
| INSpect | INS Program for Excellence and Comprehensive Tracking |
| IOBTC | Immigration Officer Basic Training Course |
| IP | Indices Popular |
| IRCA | Immigration Reform and Control Act |
| IRD | Information Resources Division (FBI) |
| IRM | Office of Information and Resource Management |
| JFCS | Jewish Family and Children's Services |
| JMD | Justice Management Division |
| JPR | Justice Performance Review |
| LADO | Los Angeles District Office |
| LAI | Labat-Anderson Incorporated |
| MDO | Miami District Office |
| MRD | Machine Readable Data |
| MSPB | Merit Systems Protection Board |
| NAC | Naturalization Advisory Committee |
| NACS | Naturalization Automated Casework System |
| NALEO | National Association of Latino Elected Officials |
| NAS | Naturalization Assistance Service, Inc. |
| NDEC | National Data Entry Center |
| NFTS | National File Tracking System |
| NPR | National Performance Review |
| NQP | Naturalization Quality Procedures |
| NSC | Nebraska Service Center |
| NYDO | New York District Office |
| NYIC | New York Immigration Coalition |
| OI | Operations Instruction |
| OIA | Office of Internal Audit |
| OIC | Officer-in-Charge |
| OIG | Office of the Inspector General |
| OIL | Office of Immigration Litigation (Department of Justice's Civil Division) |
| OMB | Office of Management and Budget |
| OPM | Office of Personnel Management |
| OPR | Office of Professional Responsibility |
| ORI | Originating Agency Identifier |
| OSC | Office of Special Counsel |
| OTE | Outside Testing Entity |
| PwC | PricewaterhouseCoopers, LLP (formerly Coopers & Lybrand, LLP) |
| PWP | Performance Work Plan |
| QA | Quality Assurance |
| QDE | Qualified Designated Entity |
| RAC | Remote Adjudications Center |
| RAFACS | Receipt and Alien File Accountability Control System |
| RFI | Request for Information |
| RNACS | Reengineered Naturalization Automated Casework System |
| RPF | Regional Processing Facility |
| SAW | Special Agricultural Worker |
| SDAO | Supervisory District Adjudications Officer |
| SFDO | San Francisco District Office |
| SOP | Standard Operating Procedure |
| TDAO | Temporary District Adjudications Officer |
| TechSys | Technology Systems Associates, Inc. |
| T-File | Temporary File |
| TSC | Texas Service Center |
| UNO | United Neighborhood Organization |
| VOICE | Valley Organized in Community Efforts |
| VOLAG | Voluntary Legal Assistance Group |
| VRA | Veterans' Readjustment Act |
| VSC | Vermont Service Center |
| WRO | Western Regional Office |