| Abbreviation | Definition |
|---|---|
| TC | Total Conversion |
| TC | Training Circular |
| TC | Transition Component |
| TC | Transmission Control |
| TC | Transmit Clock and/or Telemetry Combiner |
| TC | Transportation Coordinator |
| TC | Transportation Corps |
| TC | Transportation Corps (Army) |
| TC | Tunnel Coordinates |
| TC | Type Classification |
| TC | Type Code |
| TC2S | Tactical Command and Control System |
| TCA | Tactical Commander Afloat |
| TCA | Traditional Combatant Commander Activity |
| TCA | TRADOC Contracting Agency |
| TCA | Transformational Communications Architecture |
| TCAC | Technical Control and Analysis Center |
| TCACCIS | Transportation Coordinator's Automated Command, Control, and Information System |
| TC-ACCIS | Transportation Coordinator's Automated Command and Control Information System |
| TCAC-D | Technical Control And Analysis Center - Division |