| Acronym | Definition |
|---|
| PrHA➣Preliminary Hazard Analysis |
| PrHA➣Process Hazard Analysis (chemical process safety, industrial process safety) |
| PrHA➣President of the Royal Hibernian Academy |
| PrHA➣Parkland Regional Health Authority (Canada) |
| PrHA➣Petersburg Redevelopment and Housing Authority (est. 1968; Petersburg, VA) |
| PrHA➣People's Refreshment Houses Association (UK) |
| PrHA➣Polish Reining Horse Association |