| Abbreviation | Definition |
|---|---|
| TCMP | TMD (Theater Missile Defense) Countermeasure Mitigation Program |
| TCMS | Theater Construction Management System |
| TCMS | Training Content Management System |
| TCN | Terrestrial Communications Network |
| TCN | Third Country National |
| TCN | Tracking Control Number |
| TCO | Tactical Combat Operations |
| TCO | Telecommunications Certification Office |
| TCO | Test Control Officer |
| TCO | Total Cost of Ownership |
| TCOS | Tactical Combat Operations System |
| TCP | Tactical Computer Processor |
| TCP | Tactical Control Processor |
| TCP | Target Critical Point |
| TCP | Terminal Control Protocol |
| TCP | Theater Campaign Plan |
| TCP | Traffic Control Point |
| TCP | Transmission Control Protocol |
| TCP/IP | Transmission Control Protocol/Internet Protocol |
| TCPED | Tasking, Collection, Processing, Exploitation and Dissemination |