| Acronym | Definition |
|---|
| ORU➣Oral Roberts University (Tulsa, Oklahoma) |
| ORU➣Operation Round Up (various organizations) |
| ORU➣Oncology Research Unit (various locations) |
| ORU➣Orbital Replacement Unit |
| ORU➣Organized Research Unit(s) |
| ORU➣Old Russian (linguistics) |
| ORU➣Orbital Replaceable Unit |
| ORU➣Orbiter Replacement Unit |