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