U
| U.D.O. | GER |
| ULTIMATE | |
| ULTRASPANK | |
| ULTRAVIOLENCE | UK |
| ULVER ULVER |
NOR |
| UNANIMATED UNANIMATED UNANIMATED |
SWE |
| UNAUTHORIZED | NED |
| UNCHASTE | |
| UNCLE MEAT | |
| UNCONCERN | |
| UNDERCODE | CRO |
| UNDERCROFT | |
| UNDERTAKERS | ITA |
| UNGOD UNGOD |
GER |
| UNHOLY UNHOLY UNHOLY |
FIN |
| UNICORN | SWE |
| UNION | |
| UNIVERS ZERO | |
| UNLEASHED | SWE |
| UNLORD | |
| UNPURE UNPURE |
SWE |
| UNTERWELT | |
| UNWELCOME | |
| U.P. | DEN |
| UPPER CRUST, THE | |
| URANIA | |
| URBAN ASSAULT | |
| URIAH HEEP URIAH HEEP |
UK |
| UTUMNO | SWE |
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