- 1 U2
- 2 Ummon
- 3 Union J
- 4 Unknown Brain
- 5 Us The Duo
- 6 universe
- 7 Ukraine National Symphony Orchestra
- 8 Utah Saints
- 9 Unheilig
- 10 Us3
- 11 US5
- 12 Urban Cone
- 13 UB40
- 14 UGK
- 15 Udo
- 16 Until June
- 17 Underoath
- 18 Urbanize
- 19 Underworld
- 20 Unkle
- 21 Uakti
- 22 UFO
- 23 Ultrabeat
- 24 United Nations
- 25 unity
- 26 unknown mortal orchestra
- 27 unwritten law
- 28 USS
- 29 UUVVWWZ
- 30 Until We Are Ghosts