| Acronym | Definition |
|---|
| BRT | Bus Rapid Transit |
| BRT | Black Russian Terrier (dog breed) |
| BRT | Brightness |
| BRT | Business Roundtable |
| BRT | Be Right There |
| BRT | Bug Reporting Tool |
| BRT | Be Right There (chat) |
| BRT | Below Rotary Table (petroleum industry) |
| BRT | Buffalo River Trail (Arkansas) |
| BRT | Bathroom Tissue (various companies) |
| BRT | Biratnagar (Nepal) |
| BRT | Bruttoregistertonnen (German: Gross Register Tons) |
| BRT | Brotherhood of Railroad Trainmen (railroad union merged into United Transportation Union in late 1960s) |
| BRT | Bathurst Island, Northern Territory, Australia (Airport Code) |
| BRT | Brasilia Time (Brazilian time zone standard) |
| BRT | Bus Rapid Transportation |
| BRT | Big Red Truck |
| BRT | Bias Resistor Transistor |
| BRT | Barrier Removal Team |
| BRT | Bibollet Racing Team (France) |
| BRT | Back Room Technician |
| BRT | Boned Rolled and Tied (meats) |
| BRT | British Rail Telecommunications |
| BRT | Big Round Thing |
| BRT | Basic Rescue Training (Singapore) |
| BRT | Brooklyn Rapid Transit Corporation |
| BRT | Business and Restricted Technology (information) |
| BRT | Baltic Rubber Trade (Riga, Latvia) |
| BRT | Brigade Recon Team |
| BRT | Brian Racing Team (France) |
| BRT | Banaue Rice Terraces (Ifugao, Philippines) |
| BRT | Bocquet Racing Team (France) |
| BRT | Bird-Buffer Real Time |
| BRT | Build a Relationship of Trust (Church of Jesus Christ of Latter-day Saints missionary training) |
| BRT | Bankers Roundtable |
| BRT | Bongiovanni Research Technology |
| BRT | Bachelor of Recreation and Tourism |
| BRT | Boetti Racing Team (France) |
| BRT | Bra Removal Time |
| BRT | Battleground Rail-Trail (North Carolina) |
| BRT | Boutoille Racing Team (France) |
| BRT | Behavioral Response Team (various organizations) |
| BRT | Brevet du Randonneur Tourangeau (French hiking award) |