| United Sons Of America | 2 | 1970 |
| The United States Air Force Airmen Of Note, Washington, D.C. | 1 | 1985 |
| The United States Air Force Band | 2 | 1963 - 1971 |
| The United States Air Force Military Airlift Command Band | 2 | 1987 |
| The United States Army Band And The United States Army Chorus | 1 | 1963 |
| United States Coast Guard Academy Singers | 1 | 1960 |
| The United States Marine Band | 2 | 1964 |
| The United States Marine Drum And Bugle Corps | 1 | 1976 |
| The United States Of America | 7 | 1968 - 2017 |
| Units | 1 | 1983 |
| The Unity Stompers Jazz Band | 1 | 1982 |
| Unity [funk] | 1 | 1983 |
| Univeria Zekt | 1 | 1972 |
| Univers Zero | 2 | 1981 - 1988 |
| Universal Energy | 1 | 1977 |
| Universal Jones | 1 | 1972 |
| Universal-International Orchestra | 1 | 1958 |
| The Universal-International Orchestra | 4 | 1957 - 1978 |
| The Universal-International Studio Orchestra | 14 | 1954 - 1982 |
| The Universals [Philadelphia] | 1 | 1973 |
| Universe | 3 | 1971 - 1993 |
| Universitas Studiorum Zagrabiensis | 1 | 1974 |
| Universiteitskoor Stellenbosch | 7 | 1965 - 1980 |
| The University College Of The West Indies Steel Band | 1 | 1958 |
| The University Of Alberta Concert Choir | 1 | 1976 |
| The University Of Colorado Modern Choir | 1 | |
| University Of East Anglia Singers | 1 | 1980 |
| The University Of Michigan Band | 4 | 1961 - 1978 |
| The University Of Michigan Marching Band | 1 | 1978 |
| Unknown | 1 | 1959 |
| [unknown artist] | 41 | 1951 - 2020 |
| Unknown Artist | 4 | 1972 |
| Unknown Mortal Orchestra | 1 | 2013 |
| Unknown Passage | 1 | 2001 |
| The Unknown | 1 | 1990 |
| The Unknowns (Nebraska) | 1 | |
| The Unknowns | 2 | 1982 |
| Unlimited Touch | 1 | 1980 |
| Unni And Unni | 1 | 1976 |
| Uno | 3 | 1974 - 2020 |
| Unqualified Nurse Band | 2 | 2016 - 2017 |
| The Unrelated Segments | 1 | 2003 |
| Unrest | 2 | 1993 |
| Unsane | 3 | 1991 - 1993 |
| Unseen Terror | 1 | 1987 |
| The Unspoken Word | 2 | 1968 - 1970 |
| The Untamed Youth | 1 | 1990 |
| The Untamed | 2 | 2005 - 2009 |
| The Unthanks | 4 | 2015 - 2018 |
| Until December | 1 | 1986 |
| The Untold Fables | 1 | 1985 |
| The Untouchables | 7 | 1984 - 1988 |
| The Unwanted | 1 | 1985 |
| Unyque | 1 | 1979 |
| Up | 1 | 1995 |
| Up With People | 8 | 1974 - 1991 |
| Upp | 2 | 1975 - 1976 |
| Upper Classmen | 1 | 1959 |
| Upright Citizens | 1 | 1985 |
| Uproar | 2 | 1983 - 1985 |
| Ups And Downs | 2 | 1986 - 1988 |
| Upsetters | 4 | 1969 - 1995 |
| The Upsetters Featuring Jimmy Wess | 1 | 1968 |
| The Upsetters With Vin Gordon | 1 | 2020 |
| The Upsetters [R&B] | 1 | 1984 |
| The Upsetters | 16 | 1968 - 2020 |
| Uptown Lowdown Jazzband | 1 | 1986 |
| Upward Bound | 1 | 1977 |
| Ural Thomas And The Pain | 1 | 2018 |
| Uranus | 1 | |
| Urban Cone | 1 | 2012 |
| Urban Cookie Collective | 1 | |
| Urban Dogs | 2 | 1983 - 1985 |
| Urban Och Malte | 1 | 1976 |
| Urban Pioneers | 1 | 2016 |
| Urban Sax | 2 | 1977 - 1978 |
| Urban Verbs | 4 | 1980 - 1981 |
| Urbanus Van Anus | 2 | 1974 - 1986 |
| Urbie Green | 3 | 1959 - 1972 |
| Urbie Green And His Orchestra | 1 | 1962 |
| Urgent | 2 | 1984 - 1987 |
| The Urges | 1 | 2008 |
| Uri Geller | 2 | 1974 |
| Uriah Heep | 192 | 1970 - 2023 |
| Uroš Dojčinović | 3 | 1984 - 1986 |
| Uroš Krek | 1 | 1981 |
| Urpo | 2 | 1977 - 1979 |
| Ursa Major | 2 | 1972 |
| Ursula Buckel, Margarethe Bence, Hans Ulrich Mielsch, Eduard Wollitz, Böblinger Bach-Chor Und Orchester Der Stuttgarter Philharmonie / Roland Bader | 1 | 1967 |
| Ursula Koszut, Brigitte Fassbaender, Nicolai Gedda, Donald McIntyre, Münchner Philharmoniker | 1 | 1974 |
| Ursula May | 1 | 1972 |
| Urszula Dudziak | 2 | 1974 - 1975 |
| Urszula Sipińska | 1 | 1971 |
| Urubamba | 2 | 1974 |
| Us3 | 2 | 1993 |
| USA-European Connection | 1 | 1978 |
| The Used | 12 | 2004 - 2017 |
| Useless ID | 1 | 2008 |
| Usha Khanna | 1 | 1986 |
| Ushio Sakai | 1 | 1978 |
| Usnija Redžepova | 6 | 1977 - 1992 |
| The USSR Ministry Of Culture Orchestra | 1 | 1968 |
| USSR Radio And Television Large Symphony Orchestra, Vladimir Fedoseyev | 1 | 1974 |
| The USSR TV And Radio Large Symphony Orchestra | 1 | 1972 |
| Ustad Ali Akbar Khan And Pandit Chatur Lal | 2 | 1955 |
| Ustad Ali Akbar Khan, Pandit Chatur Lal, Shirish Gor | 1 | |
| Ustad Munawar Ali Khan | 1 | 1975 |
| Ustad Vilayat Khan | 4 | 1969 - 1971 |
| The Usual Suspects | 5 | 1985 - 1989 |
| UT | 2 | 1974 - 1976 |
| Ut Muziek m.m.v. Gerard van Maasakkers | 1 | 1982 |
| Utah Phillips | 1 | 1973 |
| Utah St. John | 1 | 1980 |
| Utah Symphony Orchestra, Maurice Abravanel | 2 | 1975 |
| The Utah Symphony Orchestra | 3 | 1970 - 1978 |
| Ute Freudenberg Und Gruppe Elefant | 3 | 1980 - 1982 |
| UTFO | 1 | 1987 |
| Utopia | 50 | 1974 - 2020 |
| The Utopia Strong | 2 | 2019 - 2022 |
| Utopia [Amon Düül II] | 3 | 1973 - 1983 |
| Utrecht Symphony Orchestra | 2 | 1955 |
| The Utterbach Concert Ensemble | 1 | 1968 |
| Uwe Jensen | 2 | 1982 - 1986 |
| Uzeb | 1 | 1984 |