FCL
- 1. FC Lichtenfels
- Christopher Columbus Foundation
- FC Lootos Põlva (women)
- FC Lorient
- FC Luzern
- Faculdade Cásper Líbero
- Fault current limiter
- Federated Co-operatives
- Ferrocarril de Langreo
- First Colony Life Insurance Company
- FishCenter Live
- Florida Coastal Airlines
- Florida Complex League
- Flow chart language
- Flying Colours Airlines
- Foundation Coal Holdings
- Framework Class Library
- Free Component Library
- Free convective layer
- Full container load
- Fundação Cásper Líbero
- Fuzzy Control Language
- JAR-FCL (Pilot License)