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