| อักษรย่อ | คำเต็ม | รายละเอียด |
| UN | United Nations | |
| USOM | United States Operation Mission | |
| UOB | United Overseas Bank | |
| UTI | Urinary Tract Infection | |
| USA | The United States of America | |
| USB | Universal Serial Bus | |
| UNHCR | United Nations High Commissioner for Refugees | |
| URI | Upper Respiratory Infection | |
| UI | User interface | |
| UNOHCHR | United Nations : Office of the High Commissioner for Human Rights | |
