| Abbreviation | Definition |
|---|---|
| TR | Transportation Request |
| TR | Trouble Report |
| TR-7 | Theater Reserve area 7 (Korea) |
| TR-7 | Theater Reserve in Korea |
| TRA | Targeted Research Action |
| TRA | Technical Review Authority |
| TRA | Temporary Restricted Area |
| TRA | The Robloxian Army |
| TRA | Threat And Risk Assessment |
| TRA | Top Rope Anchors |
| TRA | Total Request Attack |
| TRAAV | Test Range Facility for Advanced Aerospace Vulnerability |
| TRAC | Tactical Radar Correlator |
| TRAC | Time Remaining Air Computer |
| TRAC | TRADOC Analysis Command |
| TRAC2ES | Transportation Command Regulating and Command and Control Evacuation System |
| TRACE | Total Risk Assessing Cost Estimate |
| TRACE-P | Total Risk Assessing Cost Estimate for Production |
| TRACON | Terminal Radar Approach Control |
| TRACON | Terminal Radar Approach Control Facility |