- TACAN(Tactical Air Navigation System)
- Tbps(Terabits per second)(テラビット/秒)
- TDD(Time Division Duplex:複信時分割通信方式)
- TDM(Time Division Multiplex:時分割多重通信方式)
- TDMA(Time Division Multiple Access:時分割多元接続)方式
- THz(terahertz)
- TMCC情報 (Transmission and Multiplexing Configuration Control Information)