| Acronym | Definition |
|---|
| RPAA➣Regional Planning Association of America (urban planning) |
| RPAA➣Riordan Programs Alumni Association |
| RPAA➣Role Playing Addicts Anonymous (gaming clan) |
| RPAA➣Real Property Administration Assessment (education program; Seneca; Canada) |
| RPAA➣Reel Position Aft Actuator |
| RPAA➣Ruminally Protected Amino Acid |