| Acronym | Definition |
|---|
| OPCA➣Organisme Paritaire Collecteur Agréé |
| OPCA➣Organismes Paritaires Collecteurs Agrées (French: Observatory on Authorised Joint Collection Bodies) |
| OPCA➣Ontario Private Campground Association (Canada) |
| OPCA➣Oregon Pest Control Association |
| OPCA➣Office of Public and Congressional Affairs (US FBI) |
| OPCA➣Ohio Pest Control Association |
| OPCA➣Oregon Primary Care Association |
| OPCA➣Ontario Palliative Care Association |
| OPCA➣Office of the Parliamentary Commissioner for Administration (UK) |
| OPCA➣Oregon Police Canine Association |
| OPCA➣Otter Point Creek Alliance (Maryland) |
| OPCA➣Oklahoma Primary Care Association |
| OPCA➣Oracle Portal Configuration Assistant |
| OPCA➣Ontario Petroleum Contractors Association (Canada) |
| OPCA➣Ornamental Plant Collections Association (Australia) |
| OPCA➣Ohio Primary Care Association |
| OPCA➣Ontario Painting Contractors Association (Canada) |
| OPCA➣Overlay Policy Control Architecture |
| OPCA➣Office of Program Consultation and Accreditation (American Psychological Association) |
| OPCA➣Orange Park Christian Academy (Orange Park, FL) |
| OPCA➣Oklahoma Pest Control Association (also seen as OK-PCA; trade group) |
| OPCA➣Occupational Program Consultants Association |
| OPCA➣Ohio Precast Concrete Association |
| OPCA➣Olivopontine Cerebellar Atrophy |
| OPCA➣Operative Candidate |
| OPCA➣Ocean Park Community Association |
| OPCA➣Organized Pseudo-Lawful Commercial Agency |
| OPCA➣Ontario Police Chaplains Association (Canada) |
| OPCA➣Office Protestant des Communications Audiovisuelles (Switzerland) |
| OPCA➣Office of Public and Contract Archaeology |
| OPCA➣Overseas Press Club of America |
| OPCA➣Oklahoma Paint and Coatings Association |
| OPCA➣Oil Pollution Control Act |