All performers with the letter 'U'
- U-God
- U. D. O
- U2
- UB40
- Udo
- UFO
- Ugly Kid Joe
- Uhrilehto
- Ulcus
- Ultramagnetic MC's
- Ultraspank
- Ulver
- Umbral Presence
- Unanimated
- Uncle Kracker
- Under Black Cloud
- Under Black Clouds
- Undercroft
- Underoath
- Underworld
- Undying
- Unearth
- Unexpect
- Unholy
- Unicorn
- Union Underground
- Unleashed
- Unleashed Power
- Unloco
- Unlord
- UNLV
- Unseen Terror
- Until Death Overtakes Me
- Unwritten Law
- Uranium 235
- Urge Overkill
- Urgehal
- Uriah Heep
- Uruk-Hai
- Usher
- Usurper
- Utopia