| Abbreviation | Definition |
|---|---|
| TSO | Telecommunications Service Order |
| TSO | Time Sharing Option |
| TSO | Top Secret Organization |
| TSO | Type Standardization Orders |
| TSOC | Theater Special Operations Command |
| TSOFT | Terminal Sensor Flight Test |
| TSOL | The Soldiers Of Liberty |
| TSOT | Total System Operational Test |
| TSP | Telecommunications Service Priority |
| TSP | Test Support Package |
| TSP | Threat Support Package |
| TSP | Training Support Package |
| TSP | Transition Stakeholders Panel |
| TSP | Troop Structure Program |
| TSPM | Target Strength Predictive Model |
| TSQ | Temporary Status by Qualification |
| TSR | Tactical Simulations Rules |
| TSR | Tactical Strategy Rules |
| TSR | Tactical Strike And Reconnaissance |
| TSR | Tactical Studies Research |