| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| U Khe | city | Chai Nat | Thailand | 15.28 | 99.91 | 118 | 11210 |
| U TAPHAO INTL | airport | Thailand | 12.68 | 101.01 | 42 | 0 | |
| U Taphao | city | Rayong | Thailand | 12.70 | 101.00 | 82 | 37109 |
| U Thong | city | Suphan Buri | Thailand | 14.38 | 99.89 | 13 | 25310 |
| U Thong | city | Suphan Buri | Thailand | 14.33 | 99.86 | 9 | 22625 |
| U-Rua | city | Ratchaburi | Thailand | 13.52 | 99.84 | 19 | 64743 |
| U-Tapao | city | Rayong | Thailand | 12.70 | 101.00 | 82 | 37109 |
| U-tha Phao | city | Phetchaburi | Thailand | 13.31 | 99.75 | 137 | 12465 |
| UBON RATCHATHANI | airport | Thailand | 15.25 | 104.87 | 406 | 0 | |
| UBP (UBON RATCHATHANI) | airport | Thailand | 15.25 | 104.87 | 406 | 0 | |
| UDON THANI | airport | Thailand | 17.39 | 102.79 | 579 | 0 | |
| UNN (RANONG) | airport | Thailand | 9.78 | 98.59 | 57 | 0 | |
| URT (SURAT THANI) | airport | Thailand | 9.13 | 99.14 | 20 | 0 | |
| USM (SAMUI) | airport | Thailand | 9.55 | 100.06 | 64 | 0 | |
| UTH (UDON THANI) | airport | Thailand | 17.39 | 102.79 | 579 | 0 | |
| UTP (U TAPHAO INTL) | airport | Thailand | 12.68 | 101.01 | 42 | 0 | |
| Ubol | city | Ubon Ratchathani | Thailand | 15.24 | 104.85 | 830 | 82177 |
| Ubol Rachatani | city | Ubon Ratchathani | Thailand | 15.24 | 104.85 | 830 | 82177 |
| Ubol Rajadhani | city | Ubon Ratchathani | Thailand | 15.24 | 104.85 | 830 | 82177 |
| Ubolrajdhani | city | Ubon Ratchathani | Thailand | 15.24 | 104.85 | 830 | 82177 |
| Ubolratana | city | Khon Kaen | Thailand | 16.75 | 102.63 | 830 | 13373 |
| Ubon | city | Ubon Ratchathani | Thailand | 15.24 | 104.85 | 830 | 82177 |
| Ubon Rachatani | city | Ubon Ratchathani | Thailand | 15.24 | 104.85 | 830 | 82177 |
| Ubon Rachpani | city | Ubon Ratchathani | Thailand | 15.24 | 104.85 | 830 | 82177 |
| Ubon Ratchathani | city | Ubon Ratchathani | Thailand | 15.24 | 104.85 | 830 | 82177 |
| Ubon Ratczathani | city | Ubon Ratchathani | Thailand | 15.24 | 104.85 | 830 | 82177 |
| Ubonrajathani | city | Ubon Ratchathani | Thailand | 15.24 | 104.85 | 830 | 82177 |
| Ubonrajdhani | city | Ubon Ratchathani | Thailand | 15.24 | 104.85 | 830 | 82177 |
| Ubonrajthani | city | Ubon Ratchathani | Thailand | 15.24 | 104.85 | 830 | 82177 |
| Ubonrat | city | Khon Kaen | Thailand | 16.75 | 102.63 | 830 | 13373 |
| Ubonrat Dam Self Help Settlement | city | Khon Kaen | Thailand | 16.70 | 102.75 | 830 | 16955 |
| Ubonratana | city | Khon Kaen | Thailand | 16.75 | 102.63 | 830 | 13373 |
| Ubonrathana | city | Khon Kaen | Thailand | 16.75 | 102.63 | 830 | 13373 |
| Ubonratčathanis | city | Ubon Ratchathani | Thailand | 15.24 | 104.85 | 830 | 82177 |
| Udaun Thani | city | Udon Thani | Thailand | 17.42 | 102.79 | 830 | 108222 |
| Udhai | city | Phra Nakhon Si Ayutthaya | Thailand | 14.36 | 100.67 | 22 | 36602 |
| Udhaidhani | city | Uthai Thani | Thailand | 15.38 | 100.02 | 68 | 31635 |
| Udon | city | Udon Thani | Thailand | 17.42 | 102.79 | 830 | 108222 |
| Udon Thani | city | Udon Thani | Thailand | 17.42 | 102.79 | 830 | 108222 |
| Udonthani | city | Udon Thani | Thailand | 17.42 | 102.79 | 830 | 108222 |
| Udonthanis | city | Udon Thani | Thailand | 17.42 | 102.79 | 830 | 108222 |
| Udorn | city | Udon Thani | Thailand | 17.42 | 102.79 | 830 | 108222 |
| Udorndhani | city | Udon Thani | Thailand | 17.42 | 102.79 | 830 | 108222 |
| Udornthani | city | Udon Thani | Thailand | 17.42 | 102.79 | 830 | 108222 |
| Ujong Salang | city | Phuket | Thailand | 8.03 | 98.33 | 68 | 26588 |
| Uke Jorake | city | Chai Nat | Thailand | 15.28 | 99.91 | 118 | 11210 |
| Um Koi | city | Chiang Mai | Thailand | 17.80 | 98.36 | 2578 | 1937 |
| Um Pad | city | Tak | Thailand | 17.63 | 98.68 | 830 | 2607 |
| Um Pat | city | Tak | Thailand | 17.63 | 98.68 | 830 | 2607 |
| Um Wab | city | Tak | Thailand | 17.35 | 98.64 | 948 | 1639 |
| Umeng | city | Chiang Mai | Thailand | 18.41 | 98.39 | 1669 | 2235 |
| Umper Nong Chick | city | Pattani | Thailand | 6.84 | 101.18 | 3 | 44952 |
| Umper Nong Chik | city | Pattani | Thailand | 6.84 | 101.18 | 3 | 44952 |
| Umphang | city | Tak | Thailand | 16.02 | 98.86 | 1669 | 596 |
| Umyom | city | Tak | Thailand | 16.76 | 98.95 | 2906 | 5662 |
| Utapao | city | Rayong | Thailand | 12.70 | 101.00 | 82 | 37109 |
| Utapau | city | Songkhla | Thailand | 7.10 | 100.48 | 255 | 44769 |
| Utaradit | city | Uttaradit | Thailand | 17.63 | 100.09 | 249 | 43293 |
| Utaraditas | city | Uttaradit | Thailand | 17.63 | 100.09 | 249 | 43293 |
| Utaraditra | city | Uttaradit | Thailand | 17.63 | 100.09 | 249 | 43293 |
| Uthai | city | Phra Nakhon Si Ayutthaya | Thailand | 14.36 | 100.67 | 22 | 36602 |
| Uthai Kao | city | Uthai Thani | Thailand | 15.39 | 99.84 | 137 | 14840 |
| Uthai Roi Et | city | Roi Et | Thailand | 16.04 | 103.75 | 830 | 27566 |
| Uthai Sarakham | city | Maha Sarakham | Thailand | 16.18 | 103.30 | 830 | 53875 |
| Uthai Sisaket | city | Sisaket | Thailand | 15.10 | 104.57 | 387 | 17582 |
| Uthai Thani | city | Uthai Thani | Thailand | 15.38 | 100.02 | 68 | 31635 |
| Uthen | city | Nakhon Phanom | Thailand | 17.58 | 104.60 | 830 | 8148 |
| Uthom Phon Phisai | city | Sisaket | Thailand | 15.11 | 104.14 | 830 | 31633 |
| Uthumphon Phisai | city | Sisaket | Thailand | 15.11 | 104.14 | 830 | 31633 |
| Uttaradit | city | Uttaradit | Thailand | 17.63 | 100.09 | 249 | 43293 |
| Uttradit | city | Uttaradit | Thailand | 17.63 | 100.09 | 249 | 43293 |