| Abbreviation | Definition |
|---|---|
| RA | Rights Action |
| RAA | Royal Automobile Association |
| RAADA | Rehabilitation Association and Agriculture Development for Afghanistan |
| RABEDE | Reseau Africain Bioressources et de l'Energie pour l'Environnement et le Developpement |
| RAC | Royal Automobile Club |
| RACHA | Reproductive And Child Health Alliance |
| RAE | Restore America's Estuaries |
| RAFA | Royal Air Force Association |
| RAFT | Recovering Addicts Fellowship Team |
| RAHR | Rainbow Acres Horse Rescue |
| RAI | Reaching Arms International |
| RAI | Royal Anthropological Institue |
| RAIN | Rescuing Animals In Need |
| RAINN | Rape, Abuse Incest National Network |
| RAINN | Rape, Abuse & Incest National Network |
| RAINN | Rape, Abuse, and Incest National Network |
| RAL | Richmond Animal League, Richmond, VA |
| RAM | Retired Active Men Inc. |
| RAN | Rainforest Action Network |
| RAN | Regional Action Network |