- 1 U2
- 2 UB40
- 3 Union J
- 4 Us3
- 5 Ummon
- 6 UGK
- 7 Udo
- 8 Until June
- 9 Underoath
- 10 Urbanize
- 11 Utah Saints
- 12 Underworld
- 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 Urstreet
- 26 US5
- 27 Untamed
- 28 Unicorn Kid
- 29 Us The Duo
- 30 Ultramarine