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