R4R
| Acronym | Definition |
|---|---|
| R4R | Resources for Rethinking (Learning for a Sustainable Future) |
| R4R | Referral for Referral |
| R4R | Ready 4 Racing (online games team) |
| R4R | Ready 4 Repo |
| R4R | Ready for Reproduction |
| R4R | Ropings for Ropers (Temecula, CA team roping club) |
| R4R | Robots for Robots |
| R4R | Rides4Rides.com |