FIV
| Acronym | Definition |
|---|---|
| FIV | Feline Immunodeficiency Virus |
| FIV | Five |
| FIV | Federazione Italiana Vela (Italian: Italian Sailing Federation) |
| FIV | Fecondation in Vitro (French: In Vitro Fertilization) |
| FIV | Facilité d'Investissement pour le Voisinage (French: Investment Facility Neighborhood; EU) |
| FIV | Flow-Induced Vibration |
| FIV | Fédération Internationale du Vieillissement (International Federation on Ageing) |
| FIV | Formation Isolation Valve |
| FIV | Fuel Isolation Valve |
| FIV | FIV Racing Championship |