Jack Montrose (December 30, 1928 – February 7, 2006) was an American jazz tenor saxophonist and arranger, renowned for his contributions to the cool jazz and West Coast jazz movements. Born in Detroit, Montrose pursued his education in Los Angeles, where he began his professional career working with notable musicians such as Jerry Gray and Art Pepper. He also crafted arrangements for the legendary trumpeter Clifford Brown.

Despite his early success, Montrose's career faced challenges in the mid-1950s due to his heroin addiction, which became a significant obstacle. By the time he overcame his addiction, the style of jazz he was known for had waned in popularity. This shift led him to perform in strip joints for a period before relocating to Las Vegas, where he found work in casinos.

Montrose made a return to recording in 1977 and experienced a resurgence of success in 1986 through a collaboration with pianist Pete Jolly. His discography as a leader includes albums such as "Arranged by Montrose" (1954), "Jack Montrose Sextet" (1955), and "Blues and Vanilla" (1956), among others. He also contributed as a sideman to works by Chet Baker, Elmer Bernstein, Frank Butler, Shelly Manne, Art Pepper, Shorty Rogers, and Mel Torme.

Jack Montrose passed away in Las Vegas, leaving behind a legacy as a significant figure in the development of the West Coast jazz sound.