| Name | Meaning | Gender | Origin |
|---|
| Trevor | Neville's toad.
| Male | Welsh |
| Tyrell | Derivative of the Scandinavian god of battle Tyr. Tuesday was named for Tyr.
| Male | |
| Tyrelle | Derivative of the Scandinavian god of battle Tyr. Tuesday was named for Tyr.
| Male | |
| Tyrone | From Owen's territory. County Tyrone in Ireland. The late actor Tyrone Power.
| Male | Irish |
| Tyronne | From Owen's territory. County Tyrone in Ireland. The late actor Tyrone Power.
| Male | |
| Uaid | Irish form of Walter
| Male | |
| Ualtar | Strong fighter
| Male | |
| Ulicia | Feminine form of Ulik
| Female | |
| Una | One.
| Female | Latin |
| Ungus | One vigor
| Male | |
| Unity | Together
| Female | English |
| Uny | Together
| Female | |
| Van Morrison | | Unisex | Hebrew |
| Vevila | Harmony
| Female | |
| Vevina | Sweet lady
| Female | Scottish |
| Ward | Bard. Surname.
| Male | English |
| Whelan | Joyful
| Male | |
| Wiley | Meadow | Male | English |
| Wise | Ardent or wise
| Male | |
| Wylie | Wily: full of wiles, cunning. enchanting | Male | English |
| Yseult | Fair
| Female | Irish |