| Acronym | Definition |
|---|
| TGU | Tokyo Gakugei University (Japan) |
| TGU | Tour Guide from the Underworld (gaming) |
| TGU | Tegucigalpa, Honduras - Toncontin (Airport Code) |
| TGU | Turkish Get Up |
| TGU | Trinidad Generation Unlimited (Trinidad and Tobago) |
| TGU | The Great Unwashed (gaming) |
| TGU | Thermal Gasoil Unit (visbreaker/turbine cogeneration) |
| TGU | The Guys Upstairs |
| TGU | Time Generation Unit |
| TGU | Technical Guidance Unit |
| TGU | Trace Generator Unit |
| TGU | Technique Generator Unit |
| TGU | The Gamer Union (online forum) |
| TGU | Triple Glazing Unit (window insulation coating) |