| Acronym | Definition |
|---|
| UOR | University of Reading (UK) |
| UOR | Unit of Recovery |
| UOR | Use of Resources (UK) |
| UOR | Underground Oil Recovery (energy recovery process) |
| UOR | Urgent Operational Requirement |
| UOR | University of Rajasthan (India) |
| UOR | University of Redlands (California) |
| UOR | University of Rochester (Rochester, New York) |
| UOR | University of Oregon |
| UOR | University of Roorkee (Roorke, India; now known as Indian Institute of Technology) |
| UOR | Universal Orlando Resort (Orlando, Florida) |
| UOR | University of the Rockies |
| UOR | Ugland Offshore Racing (racing team) |
| UOR | Ultima Online Renaissance (game) |
| UOR | Units of Resolution |
| UOR | Unusual Occurrence Report |
| UOR | Ustawa o Rachunkowosci (Polish: Bill of Accountancy) |
| UOR | Unliquidated Obligation Research |
| UOR | Uniform Offense Report |
| UOR | Union of Reach (gaming clan) |
| UOR | Union of Revolution (gaming clan) |