|Birth name||Leonard Niehaus|
|Born||June 11, 1929|
St. Louis, Missouri
|Died||May 28, 2020 (aged 90)|
|Genres||Jazz, West Coast jazz, film music|
|Occupation(s)||Composer, arranger, orchestrator|
|Associated acts||Stan Kenton, Bill Perkins, Shelly Manne, Jerry Fielding, Clint Eastwood|
Leonard Niehaus (June 11, 1929 – May 28, 2020) was an American saxophonist, arranger, and composer. He played with the Stan Kenton big band, Ray Vasquez Trombonist and Vocalist, Phil Carreon Orchestra, and other jazz bands. He was a movie score composer and worked many times with Clint Eastwood.