| Acronym | Definition |
|---|
| TRB | Transportation Research Board |
| TRB | Trigger Boards |
| TRB | Transparent Bridging |
| TRB | Troubleshooting |
| TRB | Turbo Mode |
| TRB | Technical Review Board |
| TRB | The Radio Bureau (New Zealand) |
| TRB | Teacher Registration Board |
| TRB | Team Rainbow (various organizations) |
| TRB | Two-Rowed Barley (grain) |
| TRB | Test Review Board |
| TRB | Technology Research Branch (National Personal Protective Technology Laboratory; Pittsburgh, PA) |
| TRB | The Rusty Bucket |
| TRB | Transcoding Resource Blade |
| TRB | Total Relationship Balance |
| TRB | Tap-Rack-Bang (shooting procedure) |
| TRB | TORCS (The Open Racing Car Simulator) Racing Board (video game forum) |
| TRB | Tail Rotor Blades |
| TRB | Theodore Roosevelt Building |
| TRB | Temporal Reference Beamforming |
| TRB | Tactics Review Board |
| TRB | Technical Requirements Baseline |
| TRB | Training Reentry Body |
| TRB | Tactical Range and Bearing |
| TRB | The Rainier Building (Seattle, Washington) |