- Underworld
- Underoath
- Undertones
- Undercroft
- Undeclinable
- Underwater Circus
- Undying
- Underground Kingz
- Under Heaven
- Undercover
- Under the Influence of Giants
- Underdog Project
- Under The Flood
- Under Black Clouds
- Undeclinable Ambuscade
- Undisputed Truth
- Underneath the Gun
- Underthreat
- Undee
- Underminded
- Undish
- Underdog
- Underdog Cru
- Undead Corporation
- Undertow
- Underlined
- Undead
- Underwhelmed
- Unda Presha
- Under the Sun
- Underground Five
- Underscore
- Undershakers
- Under the Influence
- Undersea Poem
- Under Pressure
- Undrop
- Underground Sound of Lisbon
- Underground Lovers
- Under The Weather
- Underline the Sky
- Underground Dance Artists United for Life
- Undacava