| Abbreviation | Definition |
|---|---|
| THP | Temporary Hosting Permissions |
| THP | Trivial Handshake Protocol |
| THT | Token Holding Time |
| TI | Terabit Interceptor |
| TI | Terminal Indicate identity |
| TIA | Terminal Interface Adaptor |
| TIA | The Internetwork Alternative |
| TIE | Terminal Interface Equipment |
| TIEN | Trans-Eurasia Information Network |
| TIENS | Tianshi International Entrepreneurial Network System |
| TII | Terminal Indicate Identity |
| TIMS | Tivoli Internet Management Server |
| TIMX | Telephone Internet Mail Exchange |
| TIN | Terminal Indicate Number |
| TIN | Triangulated Irregular Network |
| TINA | Telecommunication Information Networking Architecture |
| TINA | Telecommunications Information Network Architecture |
| TINA | Toolkit For Interactive Network Analysis |
| TINA | Transport Infrastructure Needs Assessment |
| TINE | The ICT Networking Event |