| Abbreviation | Definition |
|---|---|
| TISAMIS | TISA Management Information System |
| TISAMIS | Troop Issue Subsistence Activity Management Information System |
| TISB | Troop and Installation Support Branch |
| TISC | Technical Integration Steering Committee |
| TISC | Theater Information Systems Command |
| TISEO | Target Identification System Electro-Optical |
| TISG | Technical Interoperability Standards Group |
| TISIS | Tactical Integrated Sensor Information System |
| TISM | Targeted Immutable Short Message |
| TISO | Threat Integration Staff Officer |
| TISS | TEWS Intermediate Support System |
| TISS | Thermal Imaging Sensor System |
| TIU | Tactical Interface Unit |
| TIW | Tactical Imagery Intelligence Wing |
| TIW | Tick Independant Weapons |
| TIWG | Technical Integration Work Group |
| TJAG | The Judge Advocate General |
| TJD | TraJectory Diagram |
| TJE | Turbo Jet Engine |
| T-JMC | Theater-Joint Movement Center |