| Acronym | Definition |
|---|
| TTU➣Texas Tech University (Lubbock, TX, USA) |
| TTU➣Tennessee Technological University |
| TTU➣Timor Tengah Utara (Indonesian: North Central Timor) |
| TTU➣Talk To You |
| TTU➣Teachers Trade Union |
| TTU➣Two Thumbs Up |
| TTU➣Tennessee Temple University (Chattanooga, TN) |
| TTU➣Tallinn Technical University (Estonia) |
| TTU➣Talk To Us (theater troupe) |
| TTU➣Timing Terminal Unit (US NASA) |
| TTU➣Transportable Treatment Unit |
| TTU➣Traditional Taekwondo Union (Norway; est. 1996) |
| TTU➣Ten Toes Up (band) |
| TTU➣Transportation Terminal Unit |
| TTU➣Thermal Treatment Unit(s) |
| TTU➣Through Transmission Ultrasonic |
| TTU➣Toyo Tanso USA, Inc. (Troutdale, OR; est. 1941) |
| TTU➣The Tempest Union (gaming clan) |
| TTU➣Terminal Transportation Unit |
| TTU➣Time Tag Unit |