| RHRA | Regal Heights Residents' Association 
| Others |
| RHRA | Reproductive Health and Rights Alliance
| Others |
| RHRA | Reproductive Health and Rights Alliance (Kenya)
| Others |
| RHRA | Retiree Health Reimbursement Account
| Others |
| RHRA | Retiree Health Reimbursement Arrangements
| Others |
| RHRA | Retirement Homes Regulatory Authority
| Others |
| RHRA | Richmond Hill Recreation Association
| Others |
| RHRA | Rochester Human Resources Association
| Others |
| RHRA | Roller Hockey Rethel Ardennes
| Others |
| RHRA | Rolling Hills Rodeo Association
| Others |
| RHRA | Romans Hot Rod Association
| Others |
| RHRA | Roseville Housing and Redevelopment Authority
| Others |
| RHRA | Royal Highland Regiment of Australia
| Others |
| RHRA | Rwanda Hotel & Restaurant Association (Kenya)
| Others |