| Acronym | Definition |
|---|
| IGTA | International Gestalt Therapy Association |
| IGTA | Iowa Group Travel Association |
| IGTA | International Gay Travel Association (Key West, FL) |
| IGTA | International Gender Transient Affinity |
| IGTA | Inspector General for Tax Administration (US) |
| IGTA | International Group of Treasurers Associations |
| IGTA | International Graduate Teaching Assistant |
| IGTA | Inspector General of the Territorial Army (UK) |
| IGTA | Inheritance and Gift Tax Act |
| IGTA | International Grouping of Treasury Associations |
| IGTA | Initial Gate Time of Arrival |
| IGTA | International Grand Theft Auto |
| IGTA | Intergalactic Terrorist Alignment |
| IGTA | International Gay Tennis Alliance |
| IGTA | Israel Group for Thermal Analysis |
| IGTA | image-guided tumor ablation |
| IGTA | International Game Technology Australia |
| IGTA | Inter Galactic Trading Association |
| IGTA | Independent Group Training Associations (UK) |
| IGTA | Intergovernmental and Tribal Affairs |
| IGTA | International Graduate Teaching Assistance |
| IGTA | Ihara Grubb Transformation Algorithms |