O Oscar de Melhor Mixagem de Som é uma das categorias da maior premiação do cinema mundial, concedida pela Academia de Artes e Ciências Cinematográficas, a premiação reconhece a melhor efeito acústico, sucessão de sons agradáveis, gravação, design de som e edição de som. Geralmente os condecorados são os responsáveis pelo som da produção e editores de som supervisores do filme vencedor.
Até o ano de 2021 as categorias de Melhor Mixagem de Som e Melhor Edição de Som eram distintas, mas a partir desta data as categorias irão se unir para de fato premiar o melhor som (áudio) do cinema mundial.
Confira a lista dos ganhadores do Oscar de Melhor Mixagem de Som:
| 1930: The Big House, Douglas Shearer, Metro-Goldwyn-Mayer |
| 1931: Paramount Publix Studio Sound Department |
| 1932: Paramount Publix Studio Sound Department |
| 1933: A Farewell to Arms, Franklin B. Hansen, Paramount |
| 1934: One Night of Love, John Livadary, Columbia |
| 1935: Naughty Marietta, Douglas Shearer, Metro-Goldwyn-Mayer |
| 1936: San Francisco, Douglas Shearer, Metro-Goldwyn-Mayer |
| 1937: The Hurricane, Thomas T. Moulton, United Artists |
| 1938: The Cowboy and the Lady, Thomas T. Moulton, United Artists |
| 1939: When Tomorrow Comes, Bernard B. Brown, Universal |
| 1940 Strike Up the Band, Douglas Shearer, Metro-Goldwyn-Mayer |
| 1941 That Hamilton Woman!, Jack Whitney, United Artists |
| 1942 Yankee Doodle Dandy, Nathan Levinson, Warner Bros. |
| 1943 This Land Is Mine, Stephen Dunn, RKO |
| 1944 Wilson, E. H. Hansen, 20th Century Fox |
| 1945 The Bells of St. Mary’s, Stephen Dunn, RKO |
| 1946 The Jolson Story, John Livadary, Columbia |
| 1947 The Bishop’s Wife, Gordon Sawyer, The Samuel Goldwyn Studio |
| 1948 The Snake Pit, Thomas T. Moulton, 20th Century Fox |
| 1949 Twelve O’Clock High, Thomas T. Moulton, 20th Century Fox |
| 1950 All About Eve, Thomas T. Moulton, 20th Century-Fox |
| 1951 The Great Caruso, Douglas Shearer, Metro-Goldwyn-Mayer |
| 1952 Breaking the Sound Barrier, London Films Sound Department |
| 1953 From Here to Eternity, John P. Livadary, Columbia |
| 1954 The Glenn Miller Story, Leslie I. Carey, Universal |
| 1955 Oklahoma!, Fred Hynes, Todd-AO Sound Department |
| 1956 The King and I, Carl Faulkner, 20th Century-Fox |
| 1957 Sayonara, George Groves, Warner Bros. |
| Gunfight at the O.K. Corral |
| 1958 South Pacific, Fred Hynes, Todd-AO Sound Department |
| 1959 Ben-Hur, Franklin E. Milton, Metro-Goldwyn-Mayer |
| 1960 The Alamo (1960), Fred Hynes, Todd-AO Sound Department and Gordon E. Sawyer |
| 1961 West Side Story, Gordon E. Sawyer, Samuel Goldwyn Studio e Fred Hynes |
| 1962 Lawrence of Arabia, John Cox, Shepperton Studios |
| 1963 How the West Was Won, Franklin E. Milton, Metro-Goldwyn-Mayer |
| 1964 My Fair Lady, George R. Groves, Warner Bros. |
| 1965 The Sound of Music, James P. Corcoran, 20th Century-Fox |
| 1966 Grand Prix, Franklin E. Milton, Metro-Goldwyn-Mayer |
| 1967 In the Heat of the Night, Samuel Goldwyn Studio |
| 1968 Oliver!, Shepperton Studio |
| 1969 Hello, Dolly!, Jack Solomon, Murray Spivack |
| 1970 Patton, Douglas Williams, Don Bassman |
| 1971 Fiddler on the Roof, Gordon K. McCallum, David Hildyard |
| 1972 Cabaret, Robert Knudson, David Hildyard |
| 1973 The Exorcist, Robert Knudson, Chris Newman |
| 1974 Earthquake, Ronald Pierce, Melvin Metcalfe Sr. |
| 1975 Jaws, Robert L. Hoyt, Roger Heman, Earl Madery, John Carter |
| 1976 All the President’s Men, Arthur Piantadosi, Les Fresholtz, Dick Alexander, Jim Webb |
| 1977 Star Wars, Don MacDougall, Ray West, Bob Minkler, Derek Ball |
| 1978 The Deer Hunter, Richard Portman, William McCaughey, Aaron Rochin, Darin Knight |
| 1979 Apocalypse Now, Walter Murch, Mark Berger, Richard Beggs, Nat Boxer |
| 1980 Star Wars Episode V: The Empire Strikes Back, Bill Varney, Steve Maslow, Gregg Landaker |
| 1981 Raiders of the Lost Ark, Bill Varney, Steve Maslow, Gregg Landaker, Roy Charman |
| 1982 E.T. the Extra-Terrestrial, Robert Knudson, Robert Glass, Don Digirolamo, Gene Cantamessa |
| 1983 The Right Stuff, Mark Berger, Tom Scott, Randy Thom, David MacMillan |
| 1984 Amadeus, Mark Berger, Tom Scott, Todd Boekelheide, Chris Newmna |
| 1985 Out of Africa, Chris Jenkins, Gary Alexander, Larry Stensvold, Peter Handford |
| 1986 Platoon, John K. Wilkinson, Richard Rogers, Charles “Bud” Grenzbach, Simon Kaye |
| 1987 The Last Emperor, Bill Rowe, Ivan Sharrock |
| 1988 Bird, Les Fresholtz, Dick Alexander, Vern Poore, Willie D. Burton |
| 1989 Glory, Donald O. Mitchell, Gregg C. Rudloff, Elliot Tyson, Russell Williams II |
| 1990 Dances With Wolves, Jeffrey Perkins, Bill W. Benton, Greg Watkins, Russell Williams II |
| 1991 Terminator 2: Judgment Day, Tom Johnson, Gary Rydstrom, Gary Summers, Lee Orloff |
| 1992 The Last of the Mohicans, Chris Jenkins, Doug Hemphill, Mark Smith, Simon Kaye |
| 1993 Jurassic Park, Gary Summers, Gary Rydstrom, Shawn Murphy, Ron Judkins |
| 1994 Speed, Gregg Landaker, Steve Maslow, Bob Beemer, David R. B. MacMillan |
| 1995 Apollo 13, Rick Dior, Steve Pederson, Scott Millan, David MacMillan |
| 1996 The English Patient, Walter Murch, Mark Berger, David Parker, Chris Newman |
| 1997 Titanic, Gary Rydstrom, Tom Johnson, Gary Summers, Mark Ulano |
| 1998 Saving Private Ryan, Gary Rydstrom, Gary Summers, Andy Nelson, Ronald Judkins |
| 1999 The Matrix, John Reitz, Gregg Rudloff, David Campbell, David Lee |
| 2001: Gladiator – Scott Millan, Bob Beemer, Ken Weston |
| 2002: Black Hawk Down – Michael Minkler, Myron Nettinga, Chris Munro |
| 2003: Chicago – Michael Minkler, Dominic Tavella, David Lee |
| 2004: The Lord of the Rings: The Return of the King – Christopher Boyes, Michael Semanick |
| 2005: Ray – Scott Millan, Greg Orloff, Bob Beemer e Steve Cantamessa |
| 2006: King Kong – Christopher Boyes, Michael Semanick, Michael Hedges, Hammond Peek |
| 2007: Dreamgirls – Michael Minkler, Bob Beemer, Willie D. Burton |
| 2008: The Bourne Ultimatum – Kirk Francis, Scott Millan e David Parker |
| 2009: Slumdog Millionaire – Ian Tapp, Richard Pryke e Resul Pookutty |
| 2010: The Hurt Locker – Ray Beckett e Paul N. J. Ottosson |
| 2011: Inception – Lora Hirschberg, Ed Novick e Gary Rizzo |
| 2012: Hugo – Tom Fleischman e John Midgley |
| 2013: Les Misérables – Simon Hayes, Andy Nelson e Mark Paterson |
| 2014: Gravity – Niv Adiri, Christopher Benstead, Skip Lievsay e Chris Munro |
| 2015: Whiplash – Thomas Curley, Criag Mann e Ben Wilkins |
| 2016: Mad Max: Fury Road – Chris Jenkins, Ben Osmo e Gregg Rudloff |
| 2017: Hacksaw Ridge – Kevin O’Connell, Andy Wright, Robert Mackenzie e Peter Grace |
| 2018: Dunkirk – Gregg Landaker, Gary Rizzo e Mark Weingarten |
| 2019: Bohemian Rhapsody – Paul Massey, Tim Cavagin e John Casali |
| 2020: 1917 – Mark Taylor e Stuart Wilson |
| 2021: Sound of Metal – Nicolas Becker, Jaime Baksht, Michelle Couttolenc, Carlos Cortés |
Para o segundo e terceiro ano da categoria do Oscar de Melhor Mixagem de Som na edição do Oscar 1932 e de 1933, apenas os nomes das empresas de cinema foram listados, sendo assim, a Paramount Publix Studio Sound Department venceu ambos os anos.
