- Undead Corporation
- Undead Killer
- Undead Viking Mafia
- Undeclared
- Undeclinable
- Undeclinable Ambuscade
- undefined
- Under 4
- Under A Dying Sun
- Under A Nightmare
- Under Atlantic
- Under Attack
- Under Bad Eyes
- Under Black Clouds
- Under Blackened Skies
- Under Byen
- Under Clan Crew
- Under Control
- Under Delusion
- Under Eden
- Under Fest
- Under Five
- Under Foreign Skies
- Under Graph
- Under Ground
- Under Grunge
- Under Line
- Under My
- Under Nineteen
- Under One Flag
- Under Pressure
- Under Side 821
- Under Spinning Lights
- Under That Spell
- Under The Bed
- Under The Church
- Under The Combine
- Under The Flames
- Under The Flood
- Under The Influence of Giants
- Under The Light
- Under The Symphony
- Under The Weather
- Under Threat
- Under White Lights
- Under17
- underaiki
- Underbombs
- Underc Family
- Undercast
- Underclass
- Undercode
- UnderCore
- Undercover
- Undercover Brother
- Undercover Rock!
- Undercover Ska
- Undercover Slut
- Undercover XD
- Undercroft
- Underdark
- Underdog
- Underdog Crew
- UnderDogs
- Underdogz
- Underfish
- Underflow
- Underfunk
- Undergang
- Underglow
- Underground
- Underground CIA
- Underground Division
- UnderGround Fly
- Underground Heroes
- Underground Kingz
- Underground Lovers
- Underground Resistance
- Underground Samba Lapa
- Underground Slayers
- Undergrounded
- Undergust
- Underismo
- Underline
- Underline Girls
- Underline The Sky
- Underlined
- Underling
- Underlive
- Underminded
- Undermine Enemies
- Underneath
- Underneath The Gun
- Underneath Your Dreams
- Underoath
- UnderPain
- Underplace
- Underride
- UnderSapiens
- Underschool Element
- Underscore
- Underscores
- Undershower
- Underside
- UnderSon Leitty
- Understand
- Understone
- Undertakers
- Undertale
- Undertheruins
- Undervibe
- Undervud
- Underwater Circus
- Underwear
- Underwears
- Underwent
- Underwhelmed
- Underworld
- Underworld Secret