| Name | Language | Saint | Meaning | Origin of the name | Celebration |
|---|---|---|---|---|---|
| uan | Español | Saint Juan Pedro Néel y compañeros | 18 of February | ||
| Ubaldo | Español | Saint Ubaldo of Gubbio | 16 of May | ||
| Udalrico | Español | Saint Udalrico of Augsburgo | 4 of July | ||
| Umberto | Español | Blessed Humbert | 4 of March | ||
| Urbicio | Español | Saint Urbicius | 15 of December | ||
| Uri | Español | Saint Joseph Oriol | 23 of March | ||
| Ursicino | Español | Saint Ursicino | 20 of December | ||
| Ursino | Español | Saint Ursino of Bourges | Osito | Alemán | 9 of November |
| Ursmaro | Español | Saint Ursmaro | 18 of April | ||
| Urso | Español | Saint Urso | 1 of February |