| Acronym | Definition |
|---|
| OSU➣Ohio State University (The) |
| OSU➣Oklahoma State University |
| OSU➣Oregon State University |
| OSU➣Optical Switching Unit |
| OSU➣Oracle Software Upgrade |
| OSU➣Open System Utilities |
| OSU➣Optical Service Unit |
| OSU➣Optical Subscriber Unit |
| OSU➣Oswego State University (fka SUNY Oswego) |
| OSU➣The Ursulines (religious order) |
| OSU➣Shore Units Division (US Navy) |
| OSU➣Officially Sanctioned User |
| OSU➣Onomastic Studies Unit (South Africa) |
| OSU➣Optical Scan Unit |
| OSU➣Optical Scanning Unit |
| OSU➣On-orbit Serviceable Unit |
| OSU➣Optical Stimulation Unit |
| OSU➣Oceanographic Support Unit |
| OSU➣Operators Support Unit |