GDDA
| 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 |