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