| Acronym | Definition |
|---|
| OPAC➣Online Public Access Catalog |
| OPAC➣Online Public Access Catalogue |
| OPAC➣Office of Public Affairs and Communications (various schools) |
| OPAC➣Operations, Planning, Accounting and Control (Eindhoven University of Technology; Netherlands) |
| OPAC➣Outside Plant Access Cabinet (telecommunications) |
| OPAC➣Ontario Property Assessment Corporation |
| OPAC➣Online Payment and Collection |
| OPAC➣Office Proficiency Assessment& Certification |
| OPAC➣Orlando Performing Arts Center (Florida, USA) |
| OPAC➣Olympic Peninsula Arabian Club (horses) |
| OPAC➣Older Persons Action Centre (Australia) |
| OPAC➣Office of Procurement and Contracts |
| OPAC➣Office Proficiency and Assessment Certification |
| OPAC➣Optimization Policies for Adaptive Control (Computer Strategy for Adative Control of Traffic Signals) |
| OPAC➣Overall Performance Appraisal Certification |
| OPAC➣Oficina de Planificación y Articulación Curricular |