| Acronym | Definition |
|---|
| TET | Transcutaneous Energy Transfer |
| TET | Tone Equal Temperament (music) |
| TET | Test Environment Toolkit |
| TET | Travailleur en Trance (French: In Trance Worker; band) |
| TET | Traffic Engineering Tool |
| TET | Tubal Embryo Transfer |
| TET | Tetrytol (explosive) |
| TET | Trilogy Energy Trust (Canada) |
| TET | Turbine Entry Temperature |
| TET | Technical Evaluation Team |
| TET | Trusted Execution Technology |
| TET | Treadmill Exercise Test |
| TET | Tokyo Electron Taiwan Ltd. (Japan and Taiwan) |
| TET | Text Enhancement Technology |
| TET | The Edinburgh Techniques (to aid those with learning disabilities) |
| TET | Tensar Earth Technologies |
| TET | Travailleur Etranger Temporaire (French: Temporary Foreign Worker; Citizenship and Immigration Canada) |
| TET | Telecommunications Education Trust |
| TET | Turbine Exit Temperature |
| TET | Twentsche Electrische Tramweg Maatschappij (former bus company in the The Netherlands.) |
| TET | Targeting Effects Team |
| TET | Technician Enhancement Training |
| TET | Torqueing Electrical Terminations |
| TET | Tactical Equipment Trainer |
| TET | Trailing Edge Tracking |
| TET | Technical Enhancement Training |
| TET | Technology Evaluation Team |
| TET | Technical Evaluation Test |