| Acronym | Definition |
|---|
| AFF | Affectionate |
| AFF | Affirmative |
| AFF | Accelerated Free Fall (type of skydiving training) |
| AFF | Adult FriendFinder (website) |
| AFF | ASEAN Football Federation |
| AFF | American FactFinder (US Census data retrieval system) |
| AFF | American Forest Foundation |
| AFF | Adult Faith Formation |
| AFF | Advance Fee Fraud |
| AFF | Above Finished Floor |
| AFF | Atlantic Film Festival |
| AFF | Adelaide Film Festival (Australia) |
| AFF | African Film Festival, Inc. (est. 1990; New York, NY) |
| AFF | Aspies for Freedom |
| AFF | American Folk Festival |
| AFF | Autonomous Formation Flight |
| AFF | Alabama Farmers Federation (Montgomery, Alabama) |
| AFF | Alliance for Fair Food (human rights organization) |
| AFF | Army Field Forces (US Army) |
| AFF | Adult Freedom Foundation |
| AFF | Acetylaminofluorene |
| AFF | Autonomous Formation Flyer |
| AFF | Association Française des Fibromyalgiques |
| AFF | Animals Asia Foundation |
| AFF | Adaptive Feed Forward |
| AFF | ASEAN Fisheries Federation |
| AFF | Advances in Financial Forecasting |
| AFF | Apostolic Faith Fellowship |
| AFF | Advanced File Format |
| AFF | Aircraft Firefighting |
| AFF | A Failing Firm |
| AFF | Adolf Fredriks Flickkör (Stockholm, Sweden) |
| AFF | Aberration Free Focus |
| AFF | Arming, Fuzing, and Firing (weapons/munitions) |
| AFF | Colorado Springs USAF Academy United States (airport code) |
| AFF | Acceptance and Ferry Flight |
| AFF | Always Friends Forever |
| AFF | Audit Finding Form |
| AFF | Arcadian Freedom Fighters |
| AFF | Air Freight Forward |
| AFF | Aviation Flight Facility |
| AFF | Action Figure Federation |
| AFF | Artificial Flat Fading |
| AFF | Away from Forum |
| AFF | Archives Française du Film (French: French Film Archives) |
| AFF | Association Française des Fundraisers (French: French Fundraising Association) |
| AFF | Application for Funding (various organizations) |
| AFF | Agriculture Forestry and Fishing (various organizations) |
| AFF | Association Française de Funboard (French: French Funboard Association; windsurfing) |
| AFF | Advocates for Faith and Freedom |
| AFF | Association Française de Footbag (French: French Footbag Association) |
| AFF | Association des Fabophiles Français (French: Association of French Fabophiles) |
| AFF | Angels Fall First (album) |
| AFF | Alimentation Fine de France (French: Fine Food of France) |
| AFF | Association Française du Froid (French: French Refrigeration Association) |
| AFF | Animation Film Festival (various organizations) |