Marty Flax, born Martin Flachsenhaar Jr. in New York City (October 7, 1924 – July 3, 1972) was an American jazz saxophonist. Flax also played flute, clarinet, and trombone
He was a baritone saxophonist in the bands of Louis Jordan, Dizzy Gillespie, Perez Prado, and Tito Puente, and played on soundtracks composed by Raymond Scott. He worked with Les Elgart and Claude Thornhill in the late 1950s, then with Quincy Jones, Melba Liston and Gillespie, including on State Department tours of the Middle East and South America. Early in the 1960s he again toured South America with the Woody Herman orchestra. When not on tour he led a house band at the Cafe Society. He also worked with Buddy Rich and Sammy Davis Jr.