FPL
- FA Premier League
- Federal Poverty Level
- Federation Professional League
- Feline panleukopenia
- Fiji Premier League
- Filipino Premier League
- Film and Photo League
- Flexor pollicis longus muscle
- Flight plan
- Forest Products Laboratory
- Frederick and Pennsylvania Line Railroad Company
- Free Party of Luxembourg
- French Polynesia
- Fuerzas Populares de Liberación Farabundo Martí
- Fullerton Public Library
- Functional programming
- Liberal People's Party (Sweden)
- Popular Liberation Front (Guatemala)