| Abbreviation | Definition |
|---|---|
| RHI | Reproductive Health Initiative |
| RHI | Responsible Hospitality Institute |
| RHIA | Reproductive Health In Asia |
| RHMA | Rural Home Missionary Association |
| RHP | Rural Heritage Program, National Trust for Historic Preservation |
| RHRA | Reproductive Health and Rights Alliance (Kenya) |
| RHRA | Royal Highland Regiment of Australia |
| RHRA | Rwanda Hotel & Restaurant Association (Kenya) |
| RHRE | Red Hook Resource Exchange |
| RI | Rehabilitation International |
| RI | Relief International |
| RIAAKW | Ranger Infantry Companies Airborne Association of the Korean War |
| RIBC | Rhode Island Blood Center |
| RIBC | Rhode Island Breastfeeding Coalition |
| RID | Registry of Interpreters for the Deaf |
| RID | Remove Intoxicated Drivers |
| RIDE | Rural Institute for Development Education |
| RIDI | Recruitment Industry Disability Initiative |
| RID-USA | Remove Intoxicated Drivers - United States of America |
| RIF | Rhode Island Foundation |