| Acronym | Definition |
|---|
| IFA | Institute for Astronomy |
| IFA | Independent Financial Adviser (UK) |
| IFA | International Fiscal Association |
| IFA | Indirect Fluorescent Antibody |
| IFA | Immunofluorescence Assay |
| IFA | Imposition Forfaitaire Annuelle (French: Fixed Annual Tax) |
| IFA | Inverted-F Antenna |
| IFA | Indirect Immunofluorescence Assay |
| IFA | Institute of Field Archaeologists (UK) |
| IFA | International Federation of Aromatherapists |
| IFA | Institut Francais d'Architecture |
| IFA | International Factoring Association |
| IFA | Israel Football Association |
| IFA | Institut Français d'Athènes (French: French Institute of Athens; Athens, Greece) |
| IFA | International Fitness Association |
| IFA | Indian Football Association (India) |
| IFA | Internationale Funkaustellung (German: International Fair of Broadcasting Services) |
| IFA | International Federation on Aging |
| IFA | Instytut Filologii Angielskiej (Polish: Institute of English Studies; university department) |
| IFA | International Frisbee Association |
| IFA | Institut Français d'Agadir (French: French Institute of Agadir; Agadir, Morocco) |
| IFA | International Formalwear Association (Chicago, Illinois) |
| IFA | Irish Farmer's Association |
| IFA | Inductive Fault Analysis |
| IFA | Independent Fee Appraiser (National Association of Independent Fee Appraisers) |
| IFA | In-Flight Anomaly (NASA) |
| IFA | Intermountain Forest Association (Coeur d'Alene, ID) |
| IFA | Intermediate Frequency Amplifier |
| IFA | Industrieverband Fahrzeugbau der DDR (German state-controlled vehicle manufacturing company) |
| IFA | Asociación Internacional de la Industria de los Fertilizantes |
| IFA | Integrated File Adapter (IBM) |
| IFA | Informal FTP Area |
| IFA | Index Funds Advisors, Inc. (Irvine, CA) |
| IFA | Institucion Federada Afroumbandista (Spanish: Umbanda African Federated Institution; Uruguay) |
| IFA | In-Flight Alignment (GPS) |
| IFA | Issued for Approval (design stage) |
| IFA | INDUS Foundation Architecture |
| IFA | Interagency Funding Agreement |
| IFA | Institut für Auslandsbeziehungen eV |
| IFA | International Friends and Associates (international match-making organization) |
| IFA | Intelligence Functional Area |
| IFA | Interior Floor Area (zoning) |
| IFA | Informaticien Frustrés Anonymes (France, Lyon) |
| IFA | Installation and Functionality Assessment |
| IFA | Institut de Formation de l'Administration Publique (Belgique) |
| IFA | Image Analysis Facility |
| IFA | Ian Farmer Associates Ltd |
| IFA | International Franchise Association |
| IFA | International Fertilizer Industry Association |
| IFA | Institucion Ferial Alicantina (Spanish exhibition center) |
| IFA | Iron-Folic Acid |
| IFA | Invest in France Agency |
| IFA | Institute of Financial Accountants |
| IFA | Illinois Finance Authority |
| IFA | Irish Football Association (Northern Ireland's governing body of soccer) |