The word Foca can refer to:
- Foča, a town in eastern Bosnia and Herzegovina
- Foča massacres, atrocities perpetrated in the town of Foča during the 1992-1995 Bosnian War
- Foça, a town in Turkey, known as Phocaea in ancient times
- Foça Islands, an island group in the Bay of Izmir, Turkey
- Foca camera, a brand of French-made rangefinder cameras
- An alternative spelling of Phocas, a Byzantine emperor between 602 and 610
The acronym FOCA can refer to
- Federal Office for Civil Aviation (disambiguation)
- Fellowship of Confessing Anglicans
- Fellowship of Christian Artists
- Fellowship of Christian Assemblies
- Font Object Content Architecture, part of MODCA
- Formula One Constructors Association
- Freedom of Choice Act
- Forces Combattantes Abacunguzi