| Acronym | Definition |
|---|
| HRA | Health Reimbursement Arrangement |
| HRA | Housing and Redevelopment Authority |
| HRA | Health Reimbursement Account |
| HRA | Health Risk Assessment |
| HRA | Health Risk Appraisal |
| HRA | Human Resources Administration |
| HRA | High-Resolution Audio |
| HRA | Housing Revenue Account (UK local authority account for council housing) |
| HRA | Habitats Regulations Assessment (UK) |
| HRA | Human Rights Act 1998 |
| HRA | Hampton Roads Academy (Newport News, VA) |
| HRA | High Right Atrium (cardiology) |
| HRA | Hip Resurfacing Arthroplasty (orthopedics) |
| HRA | Health Registration Authority |
| HRA | Handoff Request Acknowledge |
| HRA | Harness Racing Australia |
| HRA | Human Rights Association |
| HRA | Himalayan Rescue Association |
| HRA | Human Resources Association |
| HRA | Health Resources Administration |
| HRA | Hotel and Restaurant Administration (various schools) |
| HRA | Human Reliability Analysis |
| HRA | Habitats Regulations Appraisal (UK) |
| HRA | Human Rights Awareness (various organizations) |
| HRA | Historical Research Agency (US Air Force) |
| HRA | Horseracing Regulatory Authority (UK; now British Horseracing Authority) |
| HRA | Human Rights Advocates (California) |
| HRA | Hot Rolled Asphalt (civil engineering) |
| HRA | Home Repair Assistance (UK) |
| HRA | Human Reliability Assessment |
| HRA | Happy Room Academy (Nintendo Animal Crossing game) |
| HRA | Human Resources Advisor (US Army) |
| HRA | High Risk Area (travel) |
| HRA | Home Runs Allowed (baseball) |
| HRA | Honda Research of America (various locations) |
| HRA | High-Radiation Area |
| HRA | Holy Royal Arch (Freemasons) |
| HRA | Human Resource Assistance (Columbus, OH) |
| HRA | Hazard & Risk Assessment |
| HRA | Hereditary Renal Adysplasia |
| HRA | Handelsregister Abteilung A (German: Commercial Division A; Germany) |
| HRA | Harrington & Richardson Arms |
| HRA | Humanitarian and Refugee Affairs (US DoD) |
| HRA | Hydrogeological Risk Assessment |
| HRA | Hourly Rolling Average |
| HRA | Hawaii Rifle Association |
| HRA | Holographic Repatterning Association |
| HRA | Higher Rights of Audience (Solicitors Regulation Authority; UK) |
| HRA | Hot Rear Action |
| HRA | Hannah Reynolds Associates (UK) |
| HRA | High Resolution Apodizer |
| HRA | Hard Replaceable Assembly |
| HRA | Hardcore Revolutionary Anarchists (gaming clan) |
| HRA | Health Record Associate |
| HRA | Hold-Relax Active Motion |
| HRA | Heading Reference Assembly |
| HRA | Hull Receiving Array |
| HRA | House/Home Rent Allowance |
| HRA | Historic Rhône Auto (French automobile association; Rhône, France) |