| TGI | Target Group Index 
| Others |
| TGI | Task Group Instruction
| Others |
| TGI | Technoform Glass Insulation
| Others |
| TGI | Teen Giving Initiative
| Others |
| TGI | Terminating Generator Induction
| Others |
| TGI | Thaddeus Gustav Ignacius
| Others |
| TGI | Thank God It
| Others |
| TGI | Thank God It's
| Others |
| TGI | Thank Goodness It
| Others |
| TGI | The Gaming Inquisition
| Others |
| TGI | The Garden Island
| Others |
| TGI | The Grand Inquisitor
| Others |
| TGI | Think Green Initiative
| Others |
| TGI | Thinking Great Ideas
| Others |
| TGI | time to get in
| Others |
| TGI | Tingo Maria, Peru
| Others |
| TGI | Tire Group International
| Others |
| TGI | Tochigi Gunma and Ibaraki
| Others |
| TGI | Total Game Improvement
| Others |
| TGI | Track Gauge Irregularities
| Others |
| TGI | Track Gauge Irregularity
| Others |
| TGI | Track Geometry Index
| Others |
| TGI | Tranquility Gratitude and Innovation
| Others |
| TGI | Tranquility Gratitude Innovation
| Others |
| TGI | Transaction Geared Information
| Others |
| TGI | Transformational Guided Imagery
| Others |
| TGI | Transformers Gain Innit
| Others |
| TGI | Tremont Global Index
| Others |
| TGI | Tres Grande Injection
| Others |
| TGI | Tribal Government Institute
| Others |
| TGI | Tribunal de Grande Instance
| Others |
| TGI | Triumph Group Inc
| Others |
| TGI | Triumph Group, Incorporated
| Others |
| TGI | Tropical Gangsters Incorporated
| Others |
| TGI | Tumor Growth Inhibition
| Others |
| TGI | Turbo Gas Injection
| Others |
| TGI | Turian Ghost Infiltrator
| Others |
| TGI | Two Girls Impoverished
| Others |
| TGI | Type Group Instance
| Others |