| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| UĞUr | - | Turkish | ||
| Uaithne | - | Irish | ||
| Ualan | - | Scottish | ||
| Udane | - | Basque | ||
| Udo (2) | - | Western African, Igbo | ||
| Uduak | - | Western African, Ibibio | ||
| Ueli | - | German (Swiss) | ||
| Uffe | - | Danish | ||
| Ufuk | - | Turkish | ||
| Ufuoma | - | Western African, Urhobo | ||
| Uilleag | - | Irish | ||
| Uilleam | - | Scottish | ||
| Uilliam | - | Irish | ||
| Uinseann | - | Irish | ||
| Ukko | OOK-ko (Finnish) | Finnish, Finnish Mythology |