| Acronym | Definition |
|---|
| FCSF➣Fédération des Centres Sociaux de France (French: Federation of Social Centers in France) |
| FCSF➣Fundacion Cabo San Francisco |
| FCSF➣Friendship Circle of Showland Fans (UK) |
| FCSF➣Fundacion Cientifica San Francisco (Spanish: San Francisco Scientific Foundation; San Francisco, CA) |
| FCSF➣Freie Christliche Schule Frankfurt (German: Free Christian School Frankfurt) |
| FCSF➣Farm Credit System Foundation, Inc. (est. 1991; Washington, DC) |