| Abbreviation | Definition |
|---|---|
| RCPE | Royal College of Physicians of Edinburgh |
| RCPE | Royal College of Physicians of England |
| RCPL | Resource Center for Pastoral Leadership |
| RCPS | Royal College of Physicians and Surgeons |
| RCPSC | Royal College of Physicians and Surgeons of Canada |
| RCPSG | Royal College of Physicians and Surgeons of Glasgow |
| RCR | Royal College of Radiologists |
| RCRC | Reinforced Concrete Research Council |
| RCS | The Royal College of Surgeons of England |
| RCSE | Royal College of Surgeons of England |
| RCSHSB | Red Cedar Shingle & Handsplit Shake Bureau |
| RCSI | Royal College of Surgeons Ireland |
| RDAW | Rare Disease Advocacy World |
| REA | Research And Educational Association |
| REA | Retired Educators Association |
| REACH | Residents Empowerment Association Of Citrus Heights |
| REACT | Renewable Energy Association Of Central Texas |
| REAM | Retired Educators Association of Massachusetts |
| REAM | Road Engineering Association of Malaysia |
| RECB | Regional Expansion Criteria and Benefits |