| Name |
Pronunciation |
Meaning |
English Spelling |
Gender |
| Uaine | (OON-ee) | "green, verdant" | | F |
| Uaithne | (OON-ee) | | | M,F |
| Uallach | (OOL-ach) | "proud, arrogant" | | F |
| Uallachán | (OOL-ach-awn) | from Uallach, "proud" | Houlihan | M |
| Uallgarg | (OOL-garg) | uall "pride" + garg "fierce" | Goldrick | M |
| Uanfhind, Uainionn | (OOAN-in) | foam-white complexion | | F |
| Uasal | (OO-a-sal) | "noble" | | F |
| Uatér, Uatéar | (WAT-er) | borrowing of Old German Waldhar | Walter | M |
| Úga | (YU-ga) | borrowing of Germanic Hugh | | M |
| Uillecc, Uilleag | (YU-lik) | dim. of Uilliam | Ulick | M |
| Uilliam, Liam | (WILL-iam, LEE-am) | from Old German Willahelm | | M |
| Ultán | (OOL-tawn
) | "an Ulsterman" | | M |
| Úna | (OO-na) | | | F |