| Acronym | Definition |
|---|
| UOS | Unless Otherwise Stated |
| UOS | Universal Operating System |
| UOS | Unit of Study (education) |
| UOS | University of Sharjah |
| UOS | Urban Operating System |
| UOS | University Operations Services (Harvard University, Cambridge, MA) |
| UOS | University of Sheffield (Sheffield, South Yorkshire, UK) |
| UOS | University Of Osnabrueck (Osnabrueck, Germany) |
| UOS | University of Southampton (UK) |
| UOS | University of Seoul |
| UOS | University of Sargodha (Pakistan) |
| UOS | University of Stavanger (Norway) |
| UOS | University of Salford (England) |
| UOS | Unless Otherwise Specified |
| UOS | Units of Service |
| UOS | University of Sunderland (UK) |
| UOS | University Office of Sustainability (University of New Hampshire) |
| UOS | United Orthodox Synagogues (Houston, Texas) |
| UOS | Union of Students (UK) |
| UOS | User Out of Service (SS7 SCCP) |
| UOS | Universal OPC Server |
| UOS | Understandability of Software |
| UOS | Undelivered Order Schedule |
| UOS | User Operations Support |