Milton Mesirow (November 9, 1899 – August 5, 1972), better known as Mezz Mezzrow, was an American jazz clarinetist and saxophonist from Chicago, Illinois. He is remembered for organizing and financing recording sessions with Tommy Ladnier and Sidney Bechet. He recorded with Bechet as well and briefly acted as manager for Louis Armstrong. Mezzrow is equally known as a colorful character, as portrayed in his autobiography, Really the Blues (which takes its title from a Bechet composition), co-written with Bernard Wolfe and published in 1946.