GTTF
| Acronym | Definition |
|---|---|
| GTTF | GT Turbo Fan |
| GTTF | Gender Thematic Trust Fund (UN Development Programme) |
| GTTF | Green Teen Team Foundation (biodiversity) |
| GTTF | Gene Targeting and Transgenic Facility (University of Virginia; Charlottesville, VA) |
| GTTF | Gas Turbine Test Facility |