| UAITÁR m Irish |
| UALANI f Hawaiian |
| UALTAR m Irish |
| UBAI m Arabic |
| UBALDA f Spanish, Portuguese, Italian |
| UBALDO m Spanish, Portuguese, Italian |
| UBERTA f Italian |
| UCAL m Ancient Greek |
| ÚÇÈË f Arabic |
| UCHE f & m Igbo |
| UCHECHUKWU m African |
| UDANE m Future American |
| UDAY m Indian |
| UDAY m Indian |
| UDAYKUMAR m Indian |
| UDITT m Indian |
| UDUAKOBONG f & m Ibibio, Nigerian |
| —˜ŒÛ‚È m Japanese |
| UEKI m Japanese |
| UFFE m Frisian |
| UFFERT m Frisian |
| UGALIK m & f Native American, Inuit, Kalaallisut |
| UGHTRED m English, ? |
| UGHTRED m English |
| UGLÚK m Literature |
| UGOCHUKWU m African |
| UGOLINA f Italian |
| UHARDA f ?, Turkish, Egyptian Mythology |
| UHTRÆD m Anglo-Saxon |
| ÜÌÏÑÖÏ f Greek |
| U'ILANI f Hawaiian |
| UILIAM m Bulgarian |
| UINSEAN m Irish |
| UJAIF m Indian |
| UJJWALA f Indian |
| UKIUK m & f Native American, Inuit |
| UKON m Japanese |
| UKU m Estonian, Mythology |
| ULA f Arabic |
| ULAND m Ancient Germanic, English |
| ULAURY f ? |
| ULDARICO m ? |
| ULDERICA f Italian |
| ULDUZ f Azerbaijani |
| ULESTO m Hebrew, English, Welsh |
| ULFA f Italian |
| ULFERT m Frisian |
| ÚLFGEIRR m Ancient Scandinavian |
| ÚLFKETILL m Ancient Scandinavian |
| ÚLFVIÐR m Ancient Scandinavian |
| ULI f ? |
| ULI f German |
| ULICIA f Irish, Dutch |
| ULIEON m English |
| ULIK m Irish, Dutch |
| ULJAS m Finnish |
| ULOMA f Igbo |
| ULREH m German, ? |
| ULRICA f Spanish, Portuguese, Italian |
| ULRICO m Spanish, Portuguese, Italian |
| ULRYK m Polish |
| ULRYKA f Polish |
| ULTIMA f Italian, Spanish, Ancient Roman |
| ULTIMO m Italian |
| ULULANI f Hawaiian |
| ULURIAQ f Native American, Inuit |
| ULUWEHI f Hawaiian |
| ULVA f Eskimo/Inuit |
| ULYSSE m French |
| ULZANA m Native American, Apache |
| UMANG m Indian |
| UMANGI m Indian |
| UMBRA f French |
| UMBRA f Italian |
| UMBRIEL m Literature |
| UMBRO m Italian |
| UMESH f Indian |
| UMESH m Indian |
| UMIAH f ? |
| UMID m Uzbekistan |
| UMIT m & f Turkish |
| UMO m & f Mexican, Spanish |
| UMOH m & f Nigeria, Ibibio |
| UNA f English |
| UNACRON m & f Ancient Scandinavian |
| UNAKO m & f African |
| UNASHE m & f African |
| ÙÑÁßÏ&Og m Greek |
| UNCAS m Native American |
| UNELMA f Finnish |
| UNERICO m Italian |
| UNESE f ? |
| UNETA f Biblical, ? |
| UNID m Irish |
| UNIQUA f American |
| UNISON f ? |
| UNN f & m Norse Mythology, Norwegian, Swedish |
| UNNA f ? |
| UNNUK m & f Native American, Inuit |
| UNNÚLFR m Ancient Scandinavian |
| UNOLF m Ancient Germanic |
| UNTO m Finnish |
| UNULF m Ancient Germanic |
| UPASANA f Indian |
| UPDESH m & f Indian (Sikh) |
| UPENDI f African, Carribean ? |
| UPENDI f African |
| URÅ¡A f Slovene |
| URAMESHI m & f Japanese |
| URDUNN m Arabic |
| URIA m Italian |
| URIAN m Greek |
| URIANNA f ? |
| URIE m Jewish |
| URIËL m Dutch |
| URIEL m Biblical |
| URIELLE f English, French |
| URMAS m Estonian |
| URMI f Indian, Indian (Bengali), ? |
| URMILA f Indian |
| UROÅ¡ m Serbian, Slovene, Croatian |
| URONKA f ? |
| UROS m Serbian, Slovene, Croatian |
| URSILE f French |
| URSIN m Swiss German |
| URSINA f Swiss German |
| URSUL m Dutch, French |
| URSULANIQUA f African-American |
| URSULE f French |
| URSULINA f American, Dutch, English |
| URSULINE f French |
| URTICA f English |
| URVASHI f Indian |
| URVASHI f Indian |
| URYUU m Japanese |
| USAGI f Japanese |
| USAIN m English (Carribean) |
| USAKO f Japanese |
| USANZA f Italian |
| USHIO f & m Japanese |
| USHMA f Indian |
| USHMA f Indian |
| USUIITUK m & f Native American, Inuit |
| USUK m African |
| USVA m & f Finnish |
| UTA f Japanese |
| UTA f German, Austrian |
| UTAH m & f English |
| UTAKO f Japanese |
| UTHARA f Indian |
| UTHER m Celtic Mythology |
| UÐUR m & f Turkish |
| UTILIA f German |
| UTKARSH m Indian |
| UTKU f Turkish |
| UTOKIA f ?, African |
| UTSAV m Indian |
| UURINTUYA f Mongolian |
| UVALDO m Spanish, Biblical |
| UWAIS m Arabic |
| UZAIF m Indian |
| UZECON m Biblical, African, Irish, Astronomy, Celtic Mythology |
| UZOAMAKA f African |
| UZUMAKI m Japanese |
