FCU
- 1. FC Union Berlin
- F.C. United of Manchester
- FC Uijeongbu
- FC Ultramarina
- FC Unterföhring
- FC Utrecht
- Fact Checkers Unit
- Fan coil unit
- Federal credit union
- Feng Chia University
- Ferrovia Centrale Umbra
- Filamer Christian University
- Fission Uranium Corp.
- Flexor carpi ulnaris muscle
- Florida Credit Union
- Fuel control unit
- Fukien Christian University
- Fukuyama City University