| Abbreviation | Definition |
|---|---|
| RISE | Response Inducing Sustainability Evaluation |
| RITA | Research Initiative / Treatment Action |
| RK | Radial Keratotomy |
| RKO | Rectum killing Orgasm |
| RL | Residents' Lounge |
| RLE | Refractive Lens Exchange |
| RLH | Royal London Hospital |
| RLUH | Royal Liverpool Hospital |
| RLUH | Royal Liverpool University Hospital |
| RMC | Reception Medical Center |
| RMH | Ransom Memorial Hospital |
| RMH | Rockford Memorial Hospital |
| RMH | Rockingam Memorial Hospital |
| RMH | Rockingham Memorial Hospital |
| RMH | Ross Memorial Hospital |
| RMH | Ross Memorial Hospital, Lindsay, Ontario |
| RMH | Roxborough Memorial Hospital |
| RMH | Ruby Memorial Hospital |
| RMH | Rush Memorial Hospital |
| RMI | Rehman Medical Institute |