FBR
- Beveren railway station
- FBR Capital Markets
- Fast breeder reactor
- Fastbrick Robotics
- Federal Board of Revenue
- Fluidized bed reactor
- Foreign Births Register
- Foreign body response
- Fortnite Battle Royale
- Foundation for Biomedical Research
- Free Burma Rangers
- Friedman Billings Ramsey
- Fueled by Ramen
- Full bridge rectifier