BF
- .bf
- BF (protein)
- BF Homes Parañaque
- Bahamas
- Baitul Futuh
- Batters faced
- BattleForge
- Battlefront
- Bayani Fernando
- Beaver Falls, Pennsylvania
- Bellman–Ford algorithm
- Bibliotekarforbundet
- Big Falcon Rocket
- Bigfoot
- Black Flag (disambiguation)
- Blast furnace
- Bluebird Cargo
- Board foot
- Bongo Frontier
- Bonners Ferry, Idaho
- Border Force
- Boron monofluoride
- Boyfriend
- Brainfuck
- Breastfeeding
- British Fascists
- Burkina Faso
- FB (disambiguation)
- Pornographic film
- SpaceX Starship