| Acronym | Definition |
|---|
| GDDA➣Greater Downtown Development Authority (Kansas City, MO) |
| GDDA➣Gresham Downtown Development Association (Gresham, OR) |
| GDDA➣Glendalough and District Development Association (Ireland) |
| GDDA➣Gainesville District Dietetic Association (Florida) |
| GDDA➣Grand Delta Distribution Automatique (France: Grand Delta Vending) |
| GDDA➣German Disc Dog Association |