| T1 | 6 |
| T3 | 7 |
| Tab | 3 |
| Table | 3 |
| Tablet | 3 |
| Tag | 6 |
| Tape Drive | 7 |
| Target Disk Mode | 6 |
| Task Bar | 4 |
| TCP | 7 |
| TCP/IP | 7 |
| Tebibyte | 6 |
| Technical Debt | 7 |
| Technology Services | 6 |
| Telecommunications | 5 |
| Teleconference | 4 |
| Telehealth | 8 |
| Telnet | 6 |
| Template | 3 |
| Terabyte | 4 |
| Teraflops | 8 |
| Terahertz | 8 |
| Terminal | 6 |
| Text Alignment | 3 |
| Text Box | 3 |
| Text Editor | 2 |
| TFT | 9 |
| TFTP | 8 |
| Thermistor | 10 |
| Thick Client | 8 |
| Thin Client | 8 |
| Third Party | 4 |
| Thread | 6 |
| Throughput | 6 |
| Thumbnail | 3 |
| Thunderbolt | 5 |
| Thyristor | 10 |
| TIFF | 7 |
| Tiger | 6 |
| Timestamp | 4 |
| Title Bar | 3 |
| TLS | 8 |
| Toggle Key | 8 |
| Token | 8 |
| Toolbar | 4 |
| Toolchain | 9 |
| Tooltip | 5 |
| Torrent | 6 |
| Toslink | 8 |
| Touchpad | 4 |
| Touchscreen | 3 |
| Traceroute | 6 |
| Trackback | 7 |
| Trackball | 3 |
| Tracking | 7 |
| Transistor | 7 |
| Trash | 2 |
| TRIM | 9 |
| Trinitron | 7 |
| Trojan Horse | 5 |
| Troll | 7 |
| Troubleshooting | 2 |
| Truncate | 7 |
| TTL | 9 |
| Tumblr | 6 |
| Tunneling | 8 |
| Tuple | 8 |
| Tutorial | 3 |
| TWAIN | 8 |
| Tweak | 7 |
| Tweet | 4 |
| Twitter | 3 |
| Two-Factor Authentication | 5 |
| Typecasting | 8 |
| Typeface | 4 |