| PHA | Pacific Health Association 
| Others |
| PHA | Pacific Hockey Association
| Others |
| PHA | Packowski Heinritz Associates
| Others |
| PHA | Pakistan Housing Authority
| Others |
| PHA | Palomino Horse Association
| Others |
| PHA | Parks and Horticulture Authority
| Others |
| PHA | Partnership For A Healthier America
| Others |
| PHA | Passive Haemagglutination Assay
| Others |
| PHA | Pearl Harbor Associates
| Others |
| PHA | Pediatric Healthcare Associates
| Others |
| PHA | Pennsylvania Homecare Association
| Others |
| PHA | People Having AIDS
| Others |
| PHA | Peoria Housing Authority
| Others |
| PHA | Perfectly Hopeless A**
| Others |
| PHA | Periodic Health Assessment
| Others |
| PHA | Periodic Health Assessments
| Others |
| PHA | Peripheral Hear Action
| Others |
| PHA | Peripheral Heart Action
| Others |
| PHA | Personal Health Applications
| Others |
| PHA | Personal Health Assessment
| Others |
| PHA | Peterborough Hockey Association
| Others |
| PHA | Phaeton
| Others |
| PHA | Phan Rang, Vietnam
| Others |
| PHA | Pharyngealization
| Others |
| PHA | Philadelphia Housing Authority
| Others |
| PHA | Physical Health Assessment
| Others |
| PHA | Physician Hospital Alliance
| Others |
| PHA | Physician Hospitals Of America
| Others |
| PHA | phytohaemagglutinin
| Others |
| PHA | Piedmont Housing Alliance
| Others |
| PHA | Plan for a Healthier Allegheny
| Others |
| PHA | Plant Health Australia
| Others |
| PHA | Poly Hyrdroxy Acid
| Others |
| PHA | Poly- Hydroxy Alkanoate
| Others |
| PHA | Population Health Alliance
| Others |
| PHA | Port of Houston Authority
| Others |
| PHA | Portland Housing Authority
| Others |
| PHA | Portsmouth Housing Authority
| Others |
| PHA | Post-development Health Assessment
| Others |
| PHA | Posterior Hypothalamic Area
| Others |
| PHA | posthypnotic amnesia
| Others |
| PHA | Potentially Harmful Applications
| Others |
| PHA | Potentially Hazardous Asteroid
| Others |
| PHA | Potentially Hazardous Asteroids
| Others |
| PHA | Preliminary Hazard Analyses
| Others |
| PHA | Preliminary Hazard Analysis
| Others |
| PHA | Premium High Availability
| Others |
| PHA | Preventive Health Assessment
| Others |
| PHA | Preventive Health Assistance
| Others |
| PHA | primary hyperaldosteronism
| Others |
| PHA | Prince Hall Affiliate
| Others |
| PHA | Prince Hall Affiliated
| Others |
| PHA | Prince Hall Association
| Others |
| PHA | Process Hazard Analysis
| Others |
| PHA | Produce Handling Assurance
| Others |
| PHA | Professional Horsemen's Association
| Others |
| PHA | Progressive Hammer Action
| Others |
| PHA | Prospect Hill Academy
| Others |
| PHA | Providence Housing Authority
| Others |
| PHA | Provincial Highway Administration
| Others |
| PHA | Prowler Hockey Assoc
| Others |
| PHA | pseudohypoaldosteronism
| Others |
| PHA | Public Health Action
| Others |
| PHA | Public Health Advisor
| Others |
| PHA | Public Health Advisory
| Others |
| PHA | Public Health Agency
| Others |
| PHA | Public Health Alliance (incorporated into UKPHA)
| Others |
| PHA | Public Health Assessment
| Others |
| PHA | Public Health Assessments
| Others |
| PHA | Public Health Association
| Others |
| PHA | Public Housing Agencies
| Others |
| PHA | Public Housing Agency
| Others |
| PHA | Public Housing Authorities
| Others |
| PHA | Public Housing Authority
| Others |
| PHA | Pulmonary Hypertension Association
| Others |
| PHA | Pulse Height Analysis
| Others |
| PHA | Pulse Height Analyzer
| Others |
| PHA | Pulse-Height Analyser
| Others |
| PHA | Purdue Healthcare Advisors
| Others |
| PHA | Pyeong Hwa Automotive
| Others |