| TGA | Take Good Advice 
| Others |
| TGA | Targa
| Others |
| TGA | Targa File
| Others |
| TGA | Targa Graphic Adapter
| Others |
| TGA | Tasman Global Access
| Others |
| TGA | Teach Grow Achieve
| Others |
| TGA | Teach Grow and Achieve
| Others |
| TGA | Tennessee Gas Association
| Others |
| TGA | Tennessee Golf Association
| Others |
| TGA | Texas Gas Association
| Others |
| TGA | Texas German Autohaus
| Others |
| TGA | Texas Golf Association
| Others |
| TGA | Text Graphic Adapter
| Others |
| TGA | The Game Awards
| Others |
| TGA | The Gaming Armageddon
| Others |
| TGA | The Genuine Article
| Others |
| TGA | The Glatfelter Agency
| Others |
| TGA | The Great Alliance
| Others |
| TGA | the Great Arteries
| Others |
| TGA | The Great Awakening
| Others |
| TGA | Therapeutic Goods Administration
| Others |
| TGA | Therapeutic Goods Administration (Australia)
| Others |
| TGA | Therapeutic Goods Association
| Others |
| TGA | Thermo-Gravimetric Analysis
| Others |
| TGA | Top Gear America
| Others |
| TGA | Top Gear Australia
| Others |
| TGA | Top Gear Awards
| Others |
| TGA | Tour Guides Association
| Others |
| TGA | Toyota Genuine Accessories
| Others |
| TGA | Trace Gas Analyzer
| Others |
| TGA | Trans Global Airlines
| Others |
| TGA | TransGlutaminase Antibody
| Others |
| TGA | Transient Global Amnesia
| Others |
| TGA | Transposition of the Great Arteries
| Others |
| TGA | Travel Goods Association
| Others |
| TGA | Triangle Gujarati Association
| Others |
| TGA | Truevision Graphics Adapter
| Others |
| TGA | Truevision Graphics Array
| Others |
| TGA | Truevision Targa format Bitmap graphics
| Others |