| Acronym | Definition |
|---|
| BFR | Big Falcon Rocket (SpaceX) |
| BFR | Before |
| BFR | Bundesinstitut für Risikobewertung (German: Federal Institute for Risk Assessment) |
| BFR | Besoin en Fonds de Roulement (French: Working Capital Requirement) |
| BFR | Best Fit Rate Routing |
| BFR | Brominated Flame Retardant |
| BFR | Body Fat Ratio (health statistic) |
| BFR | Biennial Flight Review (aviation) |
| BFR | Bona Fide Request |
| BFR | Blood Flow Rate (dialysis) |
| BFR | Base Frequency Range (microelectronics) |
| BFR | Berliner Flug Ring (travel; Berlin, Germany) |
| BFR | Big Freakin Rocket (amateur rocketry) |
| BFR | Big Freaking Revolver |
| BFR | Biggest Finest Revolver (polite form) |
| BFR | Botafogo de Futebol e Regatas (Brazilian soccer club) |
| BFR | Big Fat Rim (BMX bicycle) |
| BFR | Between Frame Rail (product feature) |
| BFR | Brain Forest Rytual (band; est. 1992) |
| BFR | Big Freakin' Rock |
| BFR | Blast and Fragment Resistant |
| BFR | Bathtub Failure Rate |
| BFR | Black Flag Racing (motorbike race team) |
| BFR | Battle Field Removal (comics) |
| BFR | Big Freakin' Router (polite form) |
| BFR | Big Freakin' Radio (polite form) |
| BFR | Before Flight Reliability |
| BFR | Blue Force Reporting |
| BFR | Basic Facility Requirement |
| BFR | Bridged Frequency Ringing |
| BFR | Best Fraternal Regards |
| BFR | Binary File Replacement (command line program for MS Windows) |
| BFR | Bigger, Faster Routers (intranet) |
| BFR | Batch Failure Rate (film industry) |
| BFR | Bantuelle Freddy Racing (Belgian automobile club) |