| Acronym | Definition |
|---|
| TEK | Terrorelhárítási Központ (Hungarian: Terror Response Center) |
| TEK | Traditional Ecological Knowledge |
| TEK | Ticket Encryption Key |
| TEK | Tekniikan Akateemisten Liitto (Finnish Association of Graduate Engineers) |
| TEK | Traffic Encryption Key |
| TEK | The Enterprising Kitchen |
| TEK | Technology-Enabled Knowledge |
| TEK | Transmission Encryption Key |
| TEK | Test of Economic Knowledge |
| TEK | Turkiye Elektrik Kurumu (Turkish: Turkey Electricity Authority) |
| TEK | Trunk Encryption Key |
| TEK | Technology Experience and Knowledge |
| TEK | Technologically Elite Kids |
| TEK | Virtual Terminal Graphics (usually with the Tektronix 4014 or 4105 Command Set) |