Marshall Sosson (18 August 1910 - 28 April 2002) was an American violinist, equally comfortable with Jazz and Chamber repertoire.
During the 1930s and 1940s, he toured nationally with his jazz quartet. He played with the swing bands of Paul Whiteman, Benny Goodman and Artie Shaw. After World War II Sosson formed the Los Angeles String Trio and Piano Quartet, giving chamber music recitals with pianist Leonard Stein and cellist and violinist Kurt and Sven Rehr, varying his diet of serious music with rollicking jam sessions with pianist Johnny Guerneri at the Sacramento Jazz Jubilee.
He recorded with Frank Sinatra, Nat King Cole and Ella fitzgerald. He contributed to such films as "All The Kings Men," "From Here To Eternity," "On The Waterfront" and "Picnic". Sosson was chosen as concertmaster for Disney’s 1981 re-recording of "Fantasia" and responsible for selecting the 60-piece string selection to perform it.