| Acronym | Definition |
|---|
| OPAM | Optical Parallel Architecture Model |
| OPAM | Observatorio Permanente Andaluz de las Migraciones (Spanish: The Permanent Migration Observatory of Andalusia; Andalusia, Spain) |
| OPAM | Organic Producers Association of Manitoba (Manitoba, Canada) |
| OPAM | Open Air Museum (sculpture park; Netherlands) |
| OPAM | Object Perception, Attention and Memory |
| OPAM | Office of Procurement and Assistance Management (US DOE) |
| OPAM | Opera di Promozione per l'Alfabetizzazione nel Mondo (Italian: Organization for the Promotion of World Literacy) |
| OPAM | Opes Prime Asset Management (Singapore) |
| OPAM | On-Premise Account Managers |