UDO U.D.O. – Ü Blue – U.N.S.I.N. – Ubruxum – Romain Ughetto – Ugochill – Ugly Mothers – Uh Oh and the Oh Wells – Ulcerate – Ultranova – Umbilicus – Ummagma – The Unattested – Unburnt – The Uncharted – Uncle Sid – Undead Killer – Undefeated – Under A Banner – Under The Influence – Under The Mountain – Under The Oak – The Underclass – Underestimate – Underwing – Unendlich – The Uneven – Ungraven – Unhealer – Unholy Baptism – Unholy Desecration – Unite The States Project – Unity Of Two – Universal Theory – Unknown Refuge – Unloader – Unmasked – Unmuted – Unparalleled Height – Unpaved Highway – The Unresolved – Unruly – The Unsatisfied – Unshine – The Unsung – Until 9 – Until I Wake – Until Rain – Until The Sky Dies – Until We Get Caught – UNZANE – Up Your Alley – The Updraft Imperative – Upon a Falling Empire – Upon This Fate – Upon Your Grave – The Uprisers – The Upside – Urania Fantasia – Urban Theory – Urferd – URNE – Usurper – Ursus – The USA (UndyingSwanAct) – Useless Dogs – Utopia –
