| Abbreviation | Definition |
|---|---|
| UNG | Ung Names Goodness |
| UNH | The University Of No Holidays |
| UNIQLO | Unique Clothes |
| UNL | University of No Losing |
| UNLV | U Never Leave Vegas |
| UNLV | Undisputedly No Losers in Vegas |
| UNLV | Unifiy Nevada's Lost Vegetarians |
| UNLV | University of North Las Vegas |
| UNLV | Usually No Losers in Vegas |
| UNMFC | United Nation of Memes and Fried Chicken |
| UNOB | United Nations Of Beer |
| UNP | Universal Nations Preventers |
| UNV | The United Nations Of Vexillium |
| UNZIPS | United Nations Zombie Invasion Protection Squad |
| UOBO | University Of the Bleeding Obvious |
| UPC | Unknown Protracker Clone |
| UPC | Unorganized Pathetic Committee |
| UPN | U Peoples Network |
| UPN | Ubiquitous Public Network |
| UPN | Under Paid Negroes |