| Acronym | Definition |
|---|
| GTAA➣Greater Toronto Airports Authority |
| GTAA➣Global Tactical Asset Allocation (investing/finance) |
| GTAA➣Georgia Tech Alumni Association (Atlanta, GA) |
| GTAA➣Gypsy and Traveller Accommodation Assessment (UK Housing Act) |
| GTAA➣Greater Toronto Apartment Association (Toronto, Ontario, Canada) |
| GTAA➣Golf Tournament Association of America (Phoenix, AZ) |
| GTAA➣Georgia Tech Athletic Association (Atlanta, GA) |