OPAH
| Acronym | Definition |
|---|---|
| OPAH | Opérations Programmées d'Amélioration de l'Habitat (French housing rehabilitation project) |
| OPAH | Orchard Park Animal Hospital (White House, TN) |
| OPAH | Oxygenated Polycyclic Aromatic Hydrocarbons |
| OPAH | Organophosphorus Acid Anhydride Hydrolase (biochemistry) |