| Abbreviation | Definition |
|---|---|
| TNC | Theater Network Operations (NETOPS) Center |
| TNCC | Theater Network Operations (NETOPS) Control Center |
| TNCO | Transnational Criminal Organization |
| TND | Thermonuclear device |
| TNET | Training Network |
| T-Net | Training Net |
| TNF | Theater Nuclear Force |
| TNG | Training |
| TNI | Tentara Nasional Indonesia (Indonesian Armed Forces) |
| TNI | Training Need Identification |
| TNK | Tank |
| TNL | Target Nomination List |
| TNLA | Ta’ang National Liberation Army |
| TNLA | Tamil Nadu Liberation Army |
| TNMCS | Total Not Mission Capable Supply |
| TNO | Trust No One |
| TNP | Take No Prisoners |
| TNS | Tactical Name Server |
| TNS | Tactical Name Service |
| TNS | Top Notch Snipers |