| Acronym | Definition |
|---|
| TGA | Therapeutic Goods Administration (Australian regulatory body) |
| TGA | Targa (filename extension) |
| TGA | Therapeutic Goods Act |
| TGA | Thermogravimetric Analysis |
| TGA | The Guardian Angels (gaming) |
| TGA | Targa File |
| TGA | Targa Graphic Adapter |
| TGA | Therapeutic Goods Advertising (Australia) |
| TGA | Transient Global Amnesia |
| TGA | Travel Goods Association |
| TGA | The Gaslight Anthem (band) |
| TGA | Tohoku Geographical Association (est. 1947; Japan) |
| TGA | Thermal Gas Analysis |
| TGA | Air Togo (ICAO code) |
| TGA | The Grand Arkanum (band) |
| TGA | Tokyo General Agency (Japan) |
| TGA | Texas Golf Association |
| TGA | Trusted Global Advisor |
| TGA | The Global Alliance |
| TGA | Tournament Gifts of America (golf) |
| TGA | The Green Album (Weezer) |
| TGA | Tokyo Game Action (Winchendon, MA) |
| TGA | The Gersh Agency |
| TGA | Texas Glass Association |
| TGA | Trace Gas Analysis |
| TGA | Tennessee Governor's Academy (Knoxville, TN) |
| TGA | Transposition of the Greater Arteries (medical) |
| TGA | Targeted Growth Area (Los Angeles, CA) |
| TGA | Trans Global Airlines |
| TGA | Typographische Gesellschaft Austria (German: Typographic Company Austria) |
| TGA | Triangle Gujarati Association (Raleigh, NC; also seen as NCTGA) |
| TGA | The Glutamate Association (Washington, DC, USA) |
| TGA | Thantos Gaming Association |
| TGA | Third Go Around |
| TGA | Texas Gelbvieh Association |
| TGA | Thymine-Guanine-Adenine (stop codone) |
| TGA | Traditional Gaussian Approximation |
| TGA | The Grace Accord (band) |