| Acronym | Definition |
|---|
| OPRI➣Office de Protection contre les Rayonnements Ionisants (French: Office for Protection against Ionizing Radiation) |
| OPRI➣Oil Palm Research Institute (est. 1964; Ghana) |
| OPRI➣Outer Membrane Protein I |
| OPRI➣Optical Polymer Research, Inc. (Medina, OH) |
| OPRI➣Office of Public Road Inquiries (US DOT) |
| OPRI➣Office de Protection contre les Radiations Ionisantes |
| OPRI➣Oregon PERS (Public Employees Retirement System) Retirees, Inc. (est. 1991; Oregon) |