| Acronym | Definition |
|---|
| OPSU➣Oklahoma Panhandle State University (Goodwell, Oklahoma) |
| OPSU➣Oil Pressure Sending Unit (car engine part) |
| OPSU➣Olympic Programme Support Unit (UK) |
| OPSU➣Olympic Peninsula Sports Union (Bremerton, WA) |
| OPSU➣Operational Process and Support Unit (UK) |
| OPSU➣Onboard Power Supply Unit (nuclear weapons) |