FCB may refer to:
- Farm Credit Bank, part of the Farm Credit System in the United States
- File Control Block, a data structure in CP/M and DOS operating systems
- Foote, Cone & Belding, an advertising agency, now part of Draftfcb
- Frozen carbonated beverage
FCB is also a common abbreviation for the football clubs:
- FC Barcelona, Spain
- FC Bayern Munich, Germany
- FC Basel, Switzerland
- FC Baník Ostrava, Czech Republic
- FK Budućnost Podgorica, Montenegro
- FC Brest, Belarus
- FC Brugge, Belgium