| U TOTEM | U TOTEM | 1990 | USA | CD |
| U TOTEM | Jump Cut | 1994 | USA | DT |
| U TOTEM | STRANGE ATTRACTORS | 1994 | USA | CD |
| U2 | WAR | 1983 | IRE | LP |
| U2 | THE UNFORGETTABLE FIRE | 1984 | IRE | HC |
| U2 | THE JOSHUA TREE | 1987 | IRE | HC |
| UAKTI | 21 | 1996 | BRA | CD |
| UBAZAKURA | DIE ANDERE NACHT | 1985 | JAP | HC |
| UBERFALL | SO UFERLOS IM ABENDWIND | 1994 | GER | CD |
| UFO | UFO 1 | 1970 | UK | CD |
| UFO | FLYING-ONE HOUR SPACE ROCK | 1971 | UK | CD |
| UFO | LIVE | 1972 | UK | CD |
| UK | UK | 1978 | UK | CD |
| UK | DANGER MONEY | 1979 | UK | CD |
| UK | NIGHT AFTER NIGHT | 1979 | UK | LP |
| ULISES | RITUAL VIRTUAL | 1997 | MEX | CD |
| ULISES III | NATURA | 2001 | MEX | CD |
| JAMES ULMER | BLUE BLOOD | 2001 | USA | CD |
| PETER ULRICH | PATHWAYS AND DAWNS | 1999 | USA | CD |
| ULTIMATE SPINACH | ULTIMATE SPINACH | 1967 | USA | CD |
| ULTIMATE SPINACH | BEHOLD AND SEE | 1968 | USA | CD |
| ULTIMATE SPINACH | ULTIMATE SPINACH (3) | 1969 | USA | CD |
| ULTIMATE SPINACH | THE BOX | 2000 | USA | CD |
| EL ULTIMO DE LA FILA | ASTRONOMIA RAZONABLE | 1992 | SPA | HC |
| ULTRAHORSE | THE PLEASURE AND PAIN OF AN AUTOMOBILE | 1998 | USA | CD |
| ULTRAMARIN | ULTRAMARIN | 2001 | HUN | CD |
| THE ULULATING MUMMIES | SACRED SNACK | 1995 | USA | CD |
| THE ULULATING MUMMIES | WE ARE NOT DEAD | 1999 | USA | CD |
| ULYSSES | NERONIA | 1993 | GER | CD |
| KAZUTOKI UMEZU/SHAKUSHAIN | DESERT IN A HAND | 1999 | JAP | CD |
| UNCLE GUT | UNCLE GUT | 1999 | USA | CD |
| UNCLE GUT | 3 SONGS LIVE | 2000 | USA | CD |
| UNCLE GUT | UNCLE GUT (II) | 2000 | USA | CD |
| UNCLE GUT | LIVE AT ORION | 2001 | USA | CD |
| UNDER THE SUN | UNDER THE SUN | 1979 | UK | CD |
| UNDER THE SUN | 1997 DEMOS+BONUS LIVE TRACKS | 1998 | USA | CD |
| THE UNDERGROUND RAILROAD | THROUGH & THROUGH | 2000 | USA | CD |
| THE UNITED STATES OF AMERICA | THE UNITED STATES OF AMERICA | 1968 | USA | CD |
| UNIVERIA ZEKT | THE UNNAMABLES | 1971 | FRA | CD |
| UNIVERS ZERO | 1313 | 1977 | BEL | CD |
| UNIVERS ZERO | LIVE - REIMS, FRANCE 6/17/78 | 1978 | BEL | DT |
| UNIVERS ZERO | HERESIE | 1979 | BEL | CD |
| UNIVERS ZERO | CEUX DU DEHORS | 1981 | BEL | CD |
| UNIVERS ZERO | LIVE - MUNCHEN 10/17/82 | 1982 | BEL | DT |
| UNIVERS ZERO | LIVE - ROTE FABRIK, ZURICH 10/10/82 | 1982 | BEL | DT |
| UNIVERS ZERO | CRAWLING WIND | 1983 | BEL | CD |
| UNIVERS ZERO | LIVE - NANCY 2/29/84 | 1984 | BEL | HC |
| UNIVERS ZERO | UZED | 1984 | BEL | CD |
| UNIVERS ZERO | HEATWAVE | 1986 | BEL | CD |
| UNIVERS ZERO | HANOVER, GERMANY - LIVE | 198? | BEL | HC |
| UNIVERS ZERO | THE HARD QUEST | 1999 | BEL | CD |
| UNIVERSAL TOTEM ORCHESTRA | RITUALE ALIENO | 1999 | ITA | CD |
| UNLEASH THE DOG | MATTER OF TIME | 1994 | USA | CD |
| | BAD HAT SITUATIONAL | 1994 | USA | HC |
| UNTO ASHES | MOON OPPOSE MOON | 1999 | USA | CD |
| UNTO ASHES | SATURN RETURN | 2001 | USA | CD |
| UPPSALA | UPPSALA | 1983 | FRA | CD |
| UR KAOS | UR KAOS | 1987 | SWE | LP |
| UR KAOS | AV SPRUCKET UT AR VALT ETT IMUTI | 2000 | SWE | CD |
| URBAN SAX | URBAN SAX | 1977 | FRA | CD |
| URBAN SAX | URBAN SAX 2 | 1978 | FRA | DT |
| URBAN SAX | FRACTION SUR LE TEMPS | 1985 | FRA | CD |
| URBAN SAX | SPIRAL | 1991 | FRA | CD |
| URBAN SAX | TO THE HAPPY FEW | 1993 | FRA | CD |
| URBAN SAX | URBAN SAX A JAKARTA | 1995 | FRA | CD |
| MICHAL URBANIAK | FUSION | 1974 | USA | HC |
| MICHAL URBANIAK | ATMA | 1974 | USA | HC |
| MICHAL URBANIAK | FUSION III | 1975 | USA | DT |
| MICHAL URBANIAK | INACTIN / PARATYPHUS B | 1975 | USA | LP |
| MUCHAL URBANIAK | HERITAGE | 1978 | USA | LP |
| URIAH HEEP | SALISBURY | 1971 | UK | CD |
| URIAH HEEP | DEMONS & WIZARDS | 1972 | UK | CD |
| URIAH HEEP | CLASSIC HEEP | 1998 | UK | CD |
| URSA MAJOR | URSA MAJOR | 1973 | USA | CD |
| USA FOR AFRICA | We Are The World/ Grace (Quincy Jones) | 1984 | USA | SP |
| THE USE OF ASHES | FIRETREE | 1997 | HOL | CD |
| THE USE OF ASHES | ALBION MOONLIGHT | 2000 | HOL | CD |
| UT GRET | UT GRET | 1990 | USA | HC |
| UT GRET | TIME OF THE GRETS | 1996 | USA | CD |
| UTOPIA | TODD RUNDGREN'S UTOPIA | 1974 | USA | CD |
| UTOPIA | ANOTHER LIVE | 1975 | USA | CD |
| UTOPIA | RA | 1977 | USA | CD |
| UTOPIA | OOPS WRONG PLANET | 1977 | USA | CD |
| UTOPIA | UTOPIA | 1982 | USA | CD |
| UTOPIA | OBLIVION | 1983 | USA | CD |
| UTOPIA | POV | 1985 | USA | LP |
| UTOPIA | TRIVIA | 1986 | USA | CD |
| UTOPIA | REDUX 92-LIVE IN JAPAN | 1992 | USA | CD |
| UTOPIA | UTOPIA | 1973 | GER | LP |
| UTOPIAN FIELDS | UTOPIAN FIELDS | 1989 | NOR | LP |
| UTOPIAN FIELDS | WHITE PIGEON, YOU CLEAN... | 1990 | NOR | LP |
| UTOPIC SPORADIC ORCHESTRA | DE FUTURA HIROSHIMA | 1975 | FRA | CD |
| UTOPIC SPORADIC ORCHESTRA | NANCY 75 | 2001 | FRA | CD |
| UTTARA-KURU | EAST WIND | 1999 | JAP | CD |
| UZ JSME DOMA | UPROSTRED SLOV | 1990 | CZE | CD |
| UZ JSME DOMA | NEMILOVANY SVET | 1991 | CZE | CD |
| UZ JSME DOMA | UNLOVED WORLD | 1991 | CZE | CD |
| UZ JSME DOMA | HOLLYWOOD | 1993 | CZE | CD |
| UZ JSME DOMA | FAIRY TALES FROM NEEDLAND | 1995 | CZE | CD |
| UZ JSME DOMA | POHADKY ZE ZAPOTREBI | 1995 | CZE | CD |
| UZ JSME DOMA & MARTIN VELISEK | SPRING HELL AUTUMN WINTER | 1996 | CZE | CD |
| UZ JSME DOMA | LIVE | 1997 | USA | CD |
| UZ JSME DOMA | VANCOUVER 1997 LIVE | 1998 | CZE | CD |
| UZ JSME DOMA | EARS | 1999 | CZE | CD |
| UZEB | FAST EMOTION | 1982 | CAN | CD |
| UZGIN UVER | 99 | 1999 | HUN | CD |
| UZVA | TAMMIKUINEN TAMMELA | 2000 | FIN | CD |