| Acronym | Definition |
|---|
| PHIA➣Personal Health Information Act (Canada) |
| PHIA➣Pennsylvania Highway Information Association (Harrisburg, PA) |
| PHIA➣Professional Healthcare Institute of America (Louisville, KY) |
| PHIA➣Psychological Harassment Information Association (est. 2003) |
| PHIA➣Plumbing and Heating Industry Alliance (United Kingdom) |
| PHIA➣Paranormal Haunting Investigation Association |
| PHIA➣Polish Historical Institute in Australia |
| PHIA➣Pennsylvania Homicide Investigators' Association (est. 1992) |
| PHIA➣Pasteurella Haemolytica by Indirect Agglutination (pathology) |
| PHIA➣Passive Hemagglutination Inhibition Assay |