| Abbreviation | Definition |
|---|---|
| FMHA | Florida Morgan Horse Association |
| FMHC | Florida Miniature Horse Club |
| FMSF | Forward Motility-Stimulating Factor |
| FONZ | Friends Of the National Zoo |
| FOP | Fibrodysplasia Ossificans Progressiva |
| FQAS | Farm Quality Assurance Service (Northern Ireland) |
| FRAME | Fund for the Replacement of Animals in Medical Experiments |
| FRC | Farriers Registration Council |
| FRC | Foxes Rights Club |
| FRCA | Farming and Rural Conservation Agency |
| FSA | Food Standards Agency |
| FSANZ | Food Standards Australia New Zealand (formerly Australia New Zealand Food Authority) |
| FSIS | Food Safety and Inspection Service |
| FSPB | Food Safety Promotion Board |
| FSVM | Food Supply Veterinary Medicine |
| FSVPS | Federal Service for Veterinary and Phytosanitary Supervision |
| FSVPS | Federal Service for Veterinary and Phytosanitary Surveillance |
| FTF | Florida Tropical Fish |
| FTFL | Fork-Tailed FLycatcher |
| FTM | Female Transitioning to Male |