| Acronym | Definition |
|---|
| RHA | Residence Hall Association |
| RHA | Regional Health Authority |
| RHA | Road Haulage Association |
| RHA | Royal Horse Artillery (a British Regiment) |
| RHA | Right Hepatic Artery (anatomy) |
| RHA | Read Header Area |
| RHA | Rochester Housing Authority (Rochester, NY) |
| RHA | Royal Hibernian Academy |
| RHA | Raleigh Housing Authority (Raleigh, NC) |
| RHA | Rental Housing Association |
| RHA | Rural Housing Agency |
| RHA | Residential Housing Association (university) |
| RHA | Rolled Homogeneous Armor (steel) |
| RHA | Reading Housing Authority (Reading, PA) |
| RHA | Reid Heath Acoustics (British headphone manufacturer) |
| RHA | Respiratory Hospital Admission |
| RHA | Replaced Hepatic Artery |
| RHA | Regional Health Administrator |
| RHA | Records Holding Area |
| RHA | Retired Horse Association (Japan) |
| RHA | Retiree Health Access |
| RHA | Riverside Housing Association (UK) |
| RHA | Reciprocal Healthcare Agreement |
| RHA | Rolled Homogenous Armour (UK) |
| RHA | Rob Hanes Adventures (comics) |
| RHA | ruidos hidroaéreos (Spanish: bowel sounds) |
| RHA | Radiation Hardness Assured |
| RHA | Recreational Hunting Area |
| RHA | Read, Highlight and Annotate (education) |
| RHA | Roller Hockey Alliance |
| RHA | Royall House Association (Medford, Massachusetts museum) |
| RHA | Residue Handling Area |
| RHA | Radio Haute Angevine (French radio station) |
| RHA | Radiation Health Assistant |
| RHA | Reactive Hull Armor |
| RHA | Rolled, Hardened Armor |
| RHA | Reduced Hazards Ammunition |
| RHA | Residential Habilitation Aide |
| RHA | Reproductive Health Assistant |
| RHA | Richard Hagan Associates (RHA Design) |