| Abbreviation | Definition |
|---|---|
| UNLOC | United Nations Logistic Course |
| UNMBR | Unit Number |
| UNMILPOC | United Nations Military Police Course |
| UNMO | United Nations Military Observer |
| UNMO | United Nations Military Observers |
| UNMOC | United Nations Military Observers Course |
| UNMOGIP | United Nations Military Observer Group In India Pakistan |
| UNMOVCC | United Nations Movement Control Course |
| UNO | Unit Number |
| UNOCHA | United Nations Office For The Coordination of Humanitarian Affairs |
| UNODC | United Nations Office On Drugs and Crime |
| UNODIR | Unless Otherwise Directed |
| UNOSOM | United Nations Operations In Somalia |
| UNPA | United Nations Participation Act |
| UNPID | Unit Package Identification Designator |
| UNQ | Unqualified |
| UNREP | CONSOL Underway Replenishment Consolidation |
| UNREP | Underway Replenishment |
| UNRWA | United Nations Relief and Works Agency For Palestine Refugees In The Near East |
| UNSCR | United Nations Security Council Resolution |