| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| U | city | Pohnpei | Federated States of Micronesia | 6.95 | 158.27 | 3 | 6764 |
| U Mura | city | Pohnpei | Federated States of Micronesia | 6.95 | 158.27 | 3 | 6764 |
| ULI (ULITHI) | airport | Federated States of Micronesia | 10.02 | 139.79 | 6 | 0 | |
| ULITHI | airport | Federated States of Micronesia | 10.02 | 139.79 | 6 | 0 | |
| Uanajan | city | Yap | Federated States of Micronesia | 9.55 | 138.20 | 0 | 3862 |
| Ucloj | city | Yap | Federated States of Micronesia | 9.58 | 138.18 | 0 | 5196 |
| Uelei | city | Yap | Federated States of Micronesia | 9.58 | 138.18 | 0 | 5196 |
| Ueloi | city | Yap | Federated States of Micronesia | 9.58 | 138.18 | 0 | 5196 |
| Ueloy | city | Yap | Federated States of Micronesia | 9.58 | 138.18 | 0 | 5196 |
| Uenfra | city | Yap | Federated States of Micronesia | 9.62 | 138.17 | 0 | 2318 |
| Uenfura | city | Yap | Federated States of Micronesia | 9.62 | 138.17 | 0 | 2318 |
| Ueroi | city | Yap | Federated States of Micronesia | 9.58 | 138.18 | 0 | 5196 |
| Ueroru | city | Chuuk | Federated States of Micronesia | 7.35 | 151.78 | 0 | 6000 |
| Ugem | city | Yap | Federated States of Micronesia | 9.45 | 138.07 | 0 | 2663 |
| Ul | city | Yap | Federated States of Micronesia | 9.54 | 138.18 | 0 | 4628 |
| Ull | city | Yap | Federated States of Micronesia | 9.54 | 138.18 | 0 | 4628 |
| Ulu | city | Yap | Federated States of Micronesia | 9.57 | 138.14 | 0 | 7631 |
| Umin | city | Yap | Federated States of Micronesia | 9.60 | 138.15 | 131 | 3971 |
| Umin | city | Yap | Federated States of Micronesia | 9.60 | 138.17 | 82 | 3809 |
| Umun | city | Yap | Federated States of Micronesia | 9.56 | 138.19 | 0 | 4185 |
| Umung | city | Yap | Federated States of Micronesia | 9.56 | 138.19 | 0 | 4185 |
| Umung | city | Yap | Federated States of Micronesia | 9.55 | 138.18 | 3 | 4857 |
| Umungu | city | Yap | Federated States of Micronesia | 9.56 | 138.19 | 0 | 4185 |
| Unefaraa | city | Yap | Federated States of Micronesia | 9.62 | 138.17 | 0 | 2318 |
| Unifei | city | Chuuk | Federated States of Micronesia | 7.33 | 151.65 | 0 | 12186 |
| Unikapi | city | Chuuk | Federated States of Micronesia | 7.33 | 151.56 | 0 | 12268 |
| Unikappi | city | Chuuk | Federated States of Micronesia | 7.33 | 151.56 | 0 | 12268 |
| Unipis | city | Chuuk | Federated States of Micronesia | 7.45 | 151.88 | 0 | 8647 |
| Unun en Sapota | city | Chuuk | Federated States of Micronesia | 7.38 | 151.58 | 3 | 20640 |
| Unun en Unikopi | city | Chuuk | Federated States of Micronesia | 7.33 | 151.56 | 0 | 12268 |
| Unun en Unum | city | Chuuk | Federated States of Micronesia | 7.36 | 151.82 | 3 | 11226 |
| Ununo | city | Chuuk | Federated States of Micronesia | 7.36 | 151.82 | 3 | 11226 |
| Uonean | city | Yap | Federated States of Micronesia | 9.55 | 138.20 | 0 | 3862 |
| Uoruuoru | city | Yap | Federated States of Micronesia | 9.51 | 138.13 | 0 | 7466 |
| Uoten | city | Pohnpei | Federated States of Micronesia | 6.97 | 158.19 | 3 | 6258 |
| Upen | city | Chuuk | Federated States of Micronesia | 7.33 | 151.85 | 0 | 13664 |
| Upwein | city | Chuuk | Federated States of Micronesia | 7.33 | 151.84 | 3 | 13949 |
| Utwa | city | Kosrae | Federated States of Micronesia | 5.27 | 162.96 | 0 | 4281 |
| Utwa Ma | city | Kosrae | Federated States of Micronesia | 5.27 | 162.96 | 0 | 4281 |
| Uvilee | city | Yap | Federated States of Micronesia | 9.58 | 138.16 | 6 | 6883 |