| FIV | Feline Immunodeficiency Virus | 猫免疫缺陷病毒 |
| FIV | Five | 五 |
| FIV | Fuel Isolation Valve | 燃油隔离阀 |
| FIV | Flow-Induced Vibration | 流激振动 |
| FIV | Fecondation in Vitro (French: In Vitro Fertilization) | 体外受精（法语：体外受精） |
| FIV | FIV Racing Championship | FIV赛车锦标赛 |
| FIV | Formation Isolation Valve | 地层隔离阀 |
| FIV | FÉdÉration Internationale du Vieillissement (International Federation on Ageing) | FÉdÉration Internationale du Vieillissement (International Federation on Ageing) |
| FIV | forced inspiratory volume | 强制吸气量 |
| FIV | formalin-inactivated vaccine | 福尔马林灭活疫苗 |
| FIV | First Intervention Vehicle | 第一辆介入车 |
| FIV | Five Finger, Alaska USA | 美国阿拉斯加五指 |