| Abbreviation | Definition |
|---|---|
| TGL | The Glass Lab |
| TGL | Top Global Ltd |
| TGLC | The Genuine Leather Company |
| TGLC | The Good Life Company |
| TGM | Tahmaz Global Management |
| TGN | Telekom Global Net |
| TGN | The Giving Network |
| TGN | Transport Groep Nederland |
| TGNA | TG North America Corporation |
| TGO | The Gunter Organisation |
| TGO | The Gunter Organisation, Ltd. |
| TGO | ThirdGen.Org |
| TGO | Tom G. O'Neal Photography |
| TGO | Transports Generals d'Olesa, S. A. |
| TGOC | The Garage Organization Company |
| TGP | Tasmanian Gas Pipeline |
| TGP | Tata Genuine Parts |
| TGP | Thumbnail Gallery Postwhat |
| TGP | Tiger Green Productions |
| TGR | Teton Gravity Research |