| BRT | Babatunde Raji Transport 
| Others |
| BRT | Bad Road Trip
| Others |
| BRT | Balkan Rally Trophy
| Others |
| BRT | Ball Rust Test
| Others |
| BRT | Barrier Removal Team
| Others |
| BRT | Bathurst Island, Northern Territory, Australia
| Others |
| BRT | Be Right There
| Others |
| BRT | Beach Road Trip
| Others |
| BRT | Behaviour Resource Teacher
| Others |
| BRT | Belgische Radio en Televisie
| Others |
| BRT | Belgische Radio Televisie
| Others |
| BRT | Below Reportable Threshold
| Others |
| BRT | Below Rotary Table
| Others |
| BRT | Bentley R-Type
| Others |
| BRT | Better Reliable Team
| Others |
| BRT | Bias Response Team
| Others |
| BRT | Big Red Truck
| Others |
| BRT | Big Rev Trev
| Others |
| BRT | Biro Rukun Tetangga
| Others |
| BRT | Bit Rotations The
| Others |
| BRT | Black Russian Terrier
| Others |
| BRT | Blackstone River Theater
| Others |
| BRT | Block Replacement Therapy
| Others |
| BRT | Blue Ridge Triumphs
| Others |
| BRT | Board of Revision of Taxes
| Others |
| BRT | Boundary Region Theory
| Others |
| BRT | Brake Reaction Time
| Others |
| BRT | Brause Racing Team
| Others |
| BRT | Brigade Recon Troop
| Others |
| BRT | Bright
| Others |
| BRT | Bristol Riverside Theatre
| Others |
| BRT | Broadcast Recording Technician
| Others |
| BRT | Broken Right Tibia
| Others |
| BRT | Brotherhood Of Railroad Trainmen
| Others |
| BRT | Brotherhood Railroad Trainmen
| Others |
| BRT | Brotherhood Railway Trainmen
| Others |
| BRT | Budget Response Teams
| Others |
| BRT | Bug Reporting Tool
| Others |
| BRT | Building Relationships Together
| Others |
| BRT | Building Resource Teacher
| Others |
| BRT | Bus Rail Transit
| Others |
| BRT | Bus Rapid Transit
| Others |
| BRT | Bus Rapid Transport
| Others |
| BRT | Business Risk Technology
| Others |
| BRT | Realty Trust
| Others |
| BRT | The Big Red Truck
| Others |