| The U.S. Senate Committee on Stupid Funding for the So-Called Arts | 1 | |
| U.S.S.R. Bolshoi Theatre Orchestra | 1 | |
| U.S.S.R. Model Standard Wind Orchestra | 1 | |
| U.S.S.R. Radio Symphony Orchestra | 1 | |
| U.S.S.R. State Symphony Orchestra | 1 | |
| U.S.S.R. Symphony Orchestra | 1 | |
| U.S.S.R. Symphony Orchestra, Maksim Shostakovich | 1 | 1973 |
| UC Berkeley Chamber Chorus | 1 | 1991 |
| UCD Choral Scholars | 1 | |
| Udo Unger | 1 | 1981 |
| Ugo Benelli | 1 | 1980 |
| Ugo Catania | 1 | 1967 |
| Ugo Orlandi | 1 | 1992 |
| Ugo Ràpalo | 5 | 1959 - 1962 |
| Ugo Savarese | 5 | 1956 - 1959 |
| Ugo Savarese, Mario Del Monaco, Renata Tebaldi | 1 | 1957 |
| Ugo Tansini | 2 | 1950 - 1953 |
| Ugo Trama | 1 | |
| Ukrainian National Chorus | 1 | 1923 |
| Ukrainian State Symphony Orchestra | 1 | |
| Ulf Bjorlin | 5 | 1968 - 1987 |
| Ulf Fürst | 1 | |
| Ulf Fürst, Orchester Des Staatstheaters Am Gärtnerplatz München, Peter Falk | 1 | |
| Ulf Hoelscher | 4 | 1981 - 2011 |
| Ulf Hoelscher, Kurt Masur | 2 | 1985 |
| Ulf Hoelscher, New Philharmonia Orchestra, Okko Kamu | 1 | 1981 |
| Ulf Hoelscher, New Philharmonia Orchestra, Pierre Dervaux | 1 | 2011 |
| Ulf Schirmer | 1 | 1999 |
| Ulf Söderblom | 1 | 1986 |
| Ulfried Günther | 1 | 1962 |
| Ulla Groenewold | 1 | 1986 |
| Ulla Gustafsson | 1 | |
| Ulrich Eistert | 1 | 1981 |
| Ulrich Grehling | 4 | 1966 |
| Ulrich Grehling, August Wenzinger, Fritz Neumeyer | 1 | |
| Ulrich Koch | 2 | 1977 |
| Ulrich Lau | 1 | 1986 |
| Ulrich Messthaler | 1 | 1992 |
| Ulrich Pohl | 1 | 2009 |
| Ulrich Schaible | 1 | |
| Ulrich Sommerlatte | 2 | 1993 |
| Ulrika Tenstam | 1 | 1995 |
| Ulrike Schott | 1 | 1991 |
| Ulsamer Collegium | 2 | 1973 |
| Ulsamer Collegium, Collegium Terpsichore | 1 | |
| Ulster Orchestra | 11 | 1983 - 2005 |
| Ulster Orchestra, Bryden Thomson | 4 | 1983 - 1995 |
| The Ulster Orchestra, Bryden Thomson | 1 | 1985 |
| Ulster Orchestra, Josep Caballe-Domenech | 1 | 2005 |
| The Ulster Orchestra | 1 | |
| Ulster Orchestra, Vernon Handley | 2 | 1988 - 1990 |
| Ulster Orchestra, Vernon Handley, Donald Davison | 1 | 1988 |
| Ulster Orchestra, Yan Pascal Tortelier | 1 | 1999 |
| Ulysses Lappas | 1 | 1923 |
| Umberto Baccelli | 1 | |
| Umberto Berrettoni | 6 | 1958 - 1988 |
| Umberto Giordano | 44 | 1906 - 2005 |
| UMZE Chamber Ensemble | 1 | |
| Unga Musiker | 1 | 1979 |
| Ungarisches Staatsorchester | 1 | |
| Unge Akademikeres Kor | 1 | 1950 |
| Unico Wilhelm van Wassenaer | 1 | |
| Unico Willem van Wassenaer | 1 | |
| Unicorn Concert Orchestra | 1 | 1958 |
| University Of Illinois Composition Quartet | 1 | |
| University of Minnesota Brass Band | 4 | 1959 - 1995 |
| Unknown | 1 | 1980 |
| Uno Ebrelius | 1 | 1963 |
| Unremembered Orchestra | 1 | |
| Unterhaltungsorchester Will Bartel | 1 | 1962 |
| Unto Mononen | 1 | 2015 |
| Uppsala Cathedral Choir | 1 | 2005 |
| The Ural Choir | 1 | |
| The Ural Choir, Vladislav Novik | 1 | 1998 |
| Urban Agnas | 1 | 2001 |
| Urban Agnas, London Mozart Players, Howard Shelley | 1 | 2001 |
| Uri Mayer | 2 | 1985 |
| Uri Pianka | 1 | |
| Uri Segal | 6 | 1975 - 1988 |
| Uri Smilansky | 1 | |
| Urlee Leonardos | 1 | 1968 |
| Urs Winter | 1 | |
| Ursula Boese | 2 | 1986 - 2006 |
| Ursula Buckel | 4 | 1964 - 1997 |
| Ursula Buckel, Ansbach Bach Festival Soloists, Karl Richter | 1 | 1997 |
| Ursula Bundies | 1 | 2001 |
| Ursula Dütschler | 3 | |
| Ursula Holliger | 5 | 1981 - 2011 |
| Ursula Holliger, The English Concert, Trevor Pinnock | 1 | 2011 |
| Ursula Holliger, I Musici | 1 | 1981 |
| Ursula Leveaux | 1 | 2006 |
| Ursula Lüders | 1 | |
| Ursula Richter | 3 | 1953 - 1976 |
| Ursula Richter, Tiana Lemnitz | 1 | |
| Ursula Schirrmacher | 2 | |
| Ursula Schirrmacher / Fritz Wunderlich / Berliner Symphoniker | 1 | |
| Ursula Schirrmacher / Willy Hofmann / Berliner Symphoniker | 1 | |
| Ursula Schirrmacher, Roland-Dietrich Kunz | 1 | |
| Ursula van Diemen | 3 | 1935 - 1995 |
| Ursula Van Diemen, Margherita Perras | 1 | |
| Ursula Verhoeven | 1 | |
| Ursula Zollenkopf | 2 | 1993 |
| Use Gronostay | 1 | 2002 |
| USSR Bolshoi Theatre Orchestra And Chorus | 1 | |
| USSR Large Symphony Orchestra | 1 | 2014 |
| USSR Russian Chorus | 1 | 1975 |
| USSR Russian Chorus, Alexander Yurlov | 1 | 1975 |
| USSR Staats Orkest | 1 | |
| USSR Staats Orkest O.l.v. Kyrill Kondrashin | 1 | |
| USSR State Symphony Orchestra | 2 | 1997 |
| USSR Symphony Orchestra | 2 | |
| Ustad Ali Akbar Khan | 1 | |
| Ustad Ali Akbar Khan, Pandit Chatur Lal, Shirish Gor | 1 | |
| Uta Graf | 3 | 1971 |
| Utah Chamber Orchestra | 1 | 1979 |
| Utah Chamber Orchestra, Maurice Abravanel | 1 | 1979 |
| Utah Chorale | 1 | 1979 |
| Utah Chorale, Utah Symphony, Maurice Abravanel | 1 | 1979 |
| Utah Chorale, Utah Symphony, Utah Chamber Orchestra, Maurice Abravanel | 1 | 1979 |
| Utah Symphony Orchestra | 15 | 1959 - 1998 |
| Utah Symphony Orchestra, Maurice Abravanel | 6 | 1976 - 1992 |
| Utah Symphony Orchestra, Joseph Silverstein | 2 | 1988 - 1989 |
| Utako Ikeda | 1 | 2008 |
| Uto Ughi | 4 | 1961 - 1993 |
| Uto Ughi, Ernest Lush | 2 | 1961 |
| Uto Ughi, I Solisti Veneti, Claudio Scimone | 2 | 1989 - 1993 |
| Utrecht Municipal Orchestra | 1 | |
| Utrecht Opera Orchestra | 2 | 1990 |
| Utrecht Symphony Orchestra | 13 | 1953 - 1963 |
| Utrecht Symphony Orchestra, Paul Hupperts | 3 | 1954 |
| Uuno Klami | 1 | 2001 |
| Uwe Christian Harrer | 5 | 1979 - 1991 |
| Uwe Grodd | 4 | 1999 - 2005 |
| Uwe Grodd, Pettman Ensemble | 1 | 2022 |
| Uwe Heilmann | 3 | 1993 - 1994 |
| Uwe Hirth-Schmidt | 1 | 1996 |
| Uwe Kreyssig | 1 | |