| Abbreviation | Definition |
|---|---|
| USSS | Yekaterinburg, Russia |
| UST | St. Augustine, Florida USA |
| USTO | Tobol'sk, Russia |
| USTT | Tumen, Russia |
| USU | Busuanga, Philippines |
| USUU | Kurgan, Russia |
| UTAA | Ashkhabad, Turkmenistan |
| UTAK | Krasnodovsk, Turkmenistan |
| UTB | Muttaburra, Queensland, Australia |
| UTD | Nutwood Downs, Northern Territory, Australia |
| UTDD | Dushanbe, Tajikistan |
| UTE | Butterworth, South Africa |
| UTG | Quthing, Lesotho |
| UTH | Udon Thani, Thailand |
| UTK | Utirik, Marshall Islands |
| UTKK | Kokand, Uzbekhistan |
| UTL | Torremolinos, Spain |
| UTN | Upington, South Africa |
| UTNN | Nukus, Uzbekhistan |
| UTO | Utopia Creek, Alaska USA |