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