Johnnie Davis, also billed as Johnny Davis and Johnnie "Scat" Davis, (April 11, 1910 – October 28, 1983) was an American actor, singer and trumpeter.

Born John Gustave Davis in Brazil, Indiana, into a family of musicians, Davis developed an interest in music during his childhood. He learned to play the trumpet and by the age of 13 was performing with his grandfather's band. After graduating from high school he worked as a musician for several orchestras, including theater orchestras in nearby Terre Haute, Indiana such as Paul Johnson's orchestra and the Leo Baxter Orchestra. Art Davis, his younger also worked for Leo Baxter. By 1933 was living in New York City. He formed his own trio and recorded several songs with them. From the mid-1930s he worked with Fred Waring as a musician and vocalist, and his success during this time led him to Hollywood.