| Acronym | Definition |
|---|
| GTA | Grand Theft Auto (video game) |
| GTA | Greater Toronto Area (Canada) |
| GTA | Grand Theft Auto (legal) |
| GTA | Georgia Technology Authority |
| GTA | Graduate Teaching Assistant |
| GTA | Grupo de Trabalho Amazonico (Portugese: Amazon Working Group; Brazil) |
| GTA | Gullivers Travel Associates |
| GTA | Gas Tungsten Arc |
| GTA | Group Training Australia |
| GTA | Global Technology Associates, Inc |
| GTA | Graphic Training Aid |
| GTA | Graduate Teaching Assistantship |
| GTA | Garner Ted Armstrong (American evangelist) |
| GTA | Gestalt Theory and its Applications (Society for) |
| GTA | Grow the Army (US DoD) |
| GTA | Greensboro Transit Authority |
| GTA | Global Trade Atlas (Global Trade Information Services, Inc) |
| GTA | Greenville Transit Authority (South Carolina) |
| GTA | General Terms Agreement |
| GTA | Georgia Telephone Association |
| GTA | Gas Transportation Agreement |
| GTA | Groupware Task Analysis |
| GTA | Grupo de Teleinformática e Automação (Portugese; Brazil) |
| GTA | Georgia Turfgrass Association (Commerce, GA) |
| GTA | Graphite Tube Atomizer |
| GTA | Global Trustmark Alliance |
| GTA | Galactic Terran Alliance (Freespace game) |
| GTA | Government Technical Adviser (UK) |
| GTA | Get That Azzhole (gaming website) |
| GTA | Graduate Teaching Academy |
| GTA | Global Title Address |
| GTA | Gran Tourismo Alleggerita (Alfa Romeo) |
| GTA | Graduate Theory Association (Indiana University School of Music) |
| GTA | Genetic Toxicology Association |
| GTA | Ground-Test Accelerator |
| GTA | Georgia Tennis Association |
| GTA | Georgia Technology Association |
| GTA | Grand Trans Am |
| GTA | Gran Turismo Americano (automotive) |
| GTA | Georgia Transit Association |
| GTA | Gifted and Talented Association |
| GTA | Galena Territory Association |
| GTA | German Trance Alliance (band) |
| GTA | Gamma Tau Associates, Inc (educational resources) |
| GTA | Gas Turbine Alternators |
| GTA | Government Transportation Account |
| GTA | Goal-directed Task Analysis |
| GTA | Groupement Technique Accidents (French: Accident Technical Group; insurance classification) |
| GTA | Gorham Teachers Association |
| GTA | Ground Test Article/Assembly |
| GTA | Government Test Acceptance |
| GTA | Grafenwoer Training Area |
| GTA | Guaranteed Traffic Agreement |
| GTA | Group Training Associates Ltd (UK) |
| GTA | Global Test Alliance |
| GTA | Garrison Training Area |
| GTA | Group Track Assignment |
| GTA | Google Teacher Academy |
| GTA | Germans to America (Glazier/Filby passenger lists) |