| Acronym | Definition |
|---|
| RDAA➣Rural Doctors Association of Australia (est. 1991) |
| RDAA➣Riding for the Disabled Association of Australia (est. 1964) |
| RDAA➣Reading & District Angling Association (also seen as R&DAA; UK) |
| RDAA➣Raleigh-Durham Airport Authority (North Carolina) |
| RDAA➣Refuse Disposal Amenity Act (UK) |
| RDAA➣Retro-Directive Antenna Array |