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GovSpeak: A Guide to U.S. Government Acronyms & Abbreviations: I

The most current, extensive and fully-linked listing of U.S. government agency, office, program and publication acronyms.

I

I&A Industry & Analysis | Office of Intelligence and Analysis
I&M Biological Inventory and Monitoring (changed to ECO) | Inventory and Monitoring
I&O Industry and Occupation
IA International Affairs (changed to International Operations) | Import Administration (changed to E&C) | Indian Affairs |
Office of International Affairs (older link archive)
IAAO International and Academic Affairs Office
IAB InterAgency Board
IABC International Analysis and Banking Condition Division
IAC Inventors Assistance Center
IACB Indian Arts and Crafts Board
IACC Interagency Autism Coordinating Committee
IACT Institute for Atom-Efficient Chemical Transformations
IAD Information Assurance Directorate | International Affairs Division
IADRP International Alzheimer's Disease Research Portfolio
IADRWG Interagency Alternative Dispute Resolution Working Group
IAE Integrated Award Environment (older link archive)
IAEGC Inter-Agency Electronic Grants Committee (changed to grants.gov)
IAF Inter-American Foundation
IAG Industries at a Glance
IAIP Infrastructure Analysis and Infrastructure Protection Program (unable to verify 1/08)
IAL Innovative Approaches to Literacy
IAM Indian Affairs Manual (older link archive)
IAO Interagency Office of the Research and Development Partnerships Group
IAP Medicaid Innovation Accelerator Program (older link archive) | International Activities Program
IAPD Investment Adviser Public Disclosure
IAQ Indoor Air Quality
IARPA Intelligence Advanced Research Projects Activity
IASAP Indian Alcohol and Substance Abuse Program
IASOA International Arctic Systems for Observing the Atmosphere
IASP Integrated Aviation Systems Program
IAT Interagency Aviation Training
IATP Intelligence Analyst Training Program
IAWG Interagency Working Group
IEA Office of Independent Enterprise Assessments (changed to EA)
IECMHC Center of Excellence for Infant and Early Childhood Mental Health Consultation
IEED Office of Indian Energy and Economic Development (older link archive)
IER Immigrant and Employee Rights Section
IERH International Emergency and Refugee Health (changed to ERRB)
IES Institute of Education Sciences
IE&VT Industries, Education, and Vocational Training Division (unable to verify 8/17)
IFAP Information for Financial Aid Professionals
IFDP International Finance Discussion Papers (older link archive)
IFLE International and Foreign Language Education
IFO International Field Offices
IFPS Institute of Food Production and Sustainability
IFSN Institute of Food Safety and Nutrition
IFU International Field Units
IGA Office of Intergovernmental Affairs (defunct or inactive 1/17, WH transition)
IGBST Interagency Grizzly Bear Study Team
IGEMS Interior Geospatial Emergency Management System
IGIA Interagency Group on Insular Areas (older link archive)
IGIM Interagency Group on Integrative Modeling
IGMS Integrated Grants Management System
IGP Office of Information Governance and Privacy (older link archive)
IGSB Institute for Genomics & Systems Biology
IHA Indian Housing Authority (changed to PIH)
IHBG Indian Housing Block Grant
IHM Images from the History of Medicine | Indian Health Manual
IHPES Indian Health Performance Evaluation System
IHS Indian Health Service
IHSC Immigration and Customs Enforcement Health Service Corps
IMC Interagency Management Council for Federal Telecommunications (unable to verify 12/12)
IMCP Investing in Manufacturing Communities Partnership
IMDCC Interagency Marine Debris Coordinating Committee
IME Institute of Molecular Engineering (unable to verify 9/17)
IMF International Monetary Fund
IMG/M Integrated Microbial Genomes & Microbiomes
IMLS Institute of Museum and Library Services
IMMPaCt International Micronutrient Malnutrition Prevention and Control Program
INB Integrative Neuroscience Branch (older link archive)
InCA Interactive Cancer Atlas
INCA Interagency National Climate Assessment
InciWeb Incident Information System
INCSR International Narcotics Control Strategy Report
IND Investigational New Drug
INEAP Interagency Network of Enterprise Assistance Providers (unable to verify 9/16)
INF Intermediate Range Nuclear Forces
INL Bureau for International Narcotics and Law Enforcement Affairs | Idaho National Laboratory
INL/AME Office of Africa and Middle East Programs
InPort NMFS Information Portal
INR Bureau of Intelligence and Research
INS Immigration and Naturalization Service (changed to USCIS)
INTERPOL International Criminal Police Organization
IO Bureau of International Organization Affairs
IOC/AG Information Operations Center’s Analysis Group (unable to verify 2/17)
IOCM Integrated Ocean and Coastal Mapping
IOD Internal Operations Division
IOLP Inventory of Owned and Leased Properties (older link archive))
IOMs Internet Only Manuals
IOOS Integrated Ocean Observing System
IOS Division of Integrative Organismal Systems
IOSS Interagency OPSEC Support Staff | Investigative and Operations Support Section
IP Intellectual Property Enforcement Program | Office of Infrastructure Protection
IPaC Information, Planning, and Conservation
IPAD International Production Assessment Division
IPAS Illicit Pathways Attack Strategy
IPCD Intermodal Passenger Connectivity Database
IPD Innovative Program Delivery (changed to CIFS) | International Programs Division
IPI International and Philanthropic Innovation
IPM Integrated Pest Management (unable to verify 2/16)
IPP Import Permit Program | Innovative Partnerships Program (changed to ITPO) | Invoice Processing Platform
IPR Center National Intellectual Property Rights Coordination Center
IPRL Invasive Plant Research Laboratory
IPRP Interagency Pain Research Portfolio
IPS Images and Publications System, NCEI
IPTU International Prisoner Transfer Program
IPY International Polar Year
IRA Industry and Regional Analysis Division
IRAC Interdepartment Radio Advisory Committee
IRAP International Research and Applications Project (older link archive)
IRAT Inorganic and Radiation Analytical Toxicology Branch
IRB Internal Revenue Bulletin (older link archive)
IRDA Informatics Research and Development Activity (unable to verify 6/14; likely replaced by DHIS)
IRIS Industrial Research and Development Information System | Integrated Risk Information System | Interface Region Imaging Spectrograph
IRM Bureau of Information Resource Management | Internal Revenue Manual
IRMA Integrated Resource Management Applications
IRMCO Interagency Resources Management Conference (unable to verify 3/13)
IRP Intramural Research Program
IRR Indian Reservation Roads (older link archive)
IRS Internal Revenue Service
IRS-CI Internal Revenue Service, Criminal Investigations (older link archive)
IRSOB IRS Oversight Board
IRTM Division of Information Resources and Technology Management
IRWIN Integrated Reporting of Wildland-Fire Information
IS International Services
ISA Importer Self-Assessment (older link archive)
ISAs Integrated Science Assessments
ISB Investigative Services Branch
ISC Integrated Support Center | Interagency Security Committee
ISCAP Interagency Security Classification Appeals Panel
ISCD Infrastructure Security Compliance Division
ISCR Institute for Scientific Computing Research
ISD Immunization Services Division | Integrated Surface Database
ISE Information Sharing Environment (older link archive)
ISIS Integrated Software for Imagers and Spectrometers
ISLSWG International Space Life Sciences Working Group
ISN Bureau of International Security and Nonproliferation
ISO Immunization Safety Office (older link archive) | Office of International Security Operations
ISOO Information Security Oversight Office
ISP International Statistics Program
ISSM Ice Sheet System Model
ITA Interactive Tax Assistant (older link archive) | International Trade Administration
ITAP Federal Interagency Committee on Invasive Terrestrial Animals and Pathogens | International Technical Assistance Program
ITC International Technical Cooperation | NRCS Information Technology Center | United States International Trade Commission
ITD International Trade Division (changed to IAD)
ITDS International Trade Data Systems
ITEC Interagency Trade Enforcement Center
ITIS Integrated Taxonomic Information System
ITL Information Technology Laboratory
ITPO Innovative Technology Partnerships Office (changed to SPO)
ITS Institute for Telecommunications Sciences | Intelligent Transportation Systems | International Treasury Services
ITVERP International Terrorism Victim Expense Reimbursement Program
IV&V Independent Verification and Validation Facility
IVLP International Visitor Leadership Program
IWG Interagency Working Group
IWGYP Interagency Working Group on Youth Programs
IWS Irregular Warfare Support Program (unable to verify; likely changed to CTTSO)
IYFC Institute of Youth, Family, and Community