| Acronym | Definition |
|---|
| PAH | Polycyclic Aromatic Hydrocarbon (compound) |
| PAH | Pulmonary Arterial Hypertension |
| PAH | Poly (Allylamine Hydrochloride) |
| PAH | Polska Akcja Humanitarna |
| PAH | Poly-Allylamine Hydrochloride |
| PAH | Print at Home (tickets) |
| PAH | Phenylalanine Hydroxylase |
| PAH | Pfizer Animal Health (now Zoetis) |
| PAH | Print at Home |
| PAH | Partners for Affordable Housing (various locations) |
| PAH | Polynuclear Aromatic Hydrocarbon (compound) |
| PAH | Polyaromatic Hydrocarbon |
| PAH | Pets At Home (UK pet supermarket chain) |
| PAH | Prêt à l'Amélioration de l'Habitat (French: Housing Improvement Loan) |
| PAH | Polychlorinated Aromatic Hydrocarbon |
| PAH | P-Aminohippuric Acid |
| PAH | Para-Aminohippuric Acid (used in renal function tests) |
| PAH | Production Approval Holder |
| PAH | Paducah, KY, USA (Airport Code) |
| PAH | Promoting Awareness in Healthcare |
| PAH | Platoon Area Hazard |
| PAH | Position Area Hazard |
| PAH | Partners Against Hate |
| PAH | Pacific Andes Holdings (various locations) |
| PAH | Payload Accommodations Handbook |
| PAH | Parents Are Home |
| PAH | Primary Account Holder |
| PAH | 4-Aminohippuric Acid (CAS Number 61-78-9) |
| PAH | Pretoria Akademiese Hospitaal (South Africa) |
| PAH | Panzerabwehrhelikopter (German: Anti-Tank Helicopter) |
| PAH | Personnel Access Hatch |
| PAH | Predictor At Home |
| PAH | Department of Pathology at Pennsylvania Hospital |