John Maurice Hartman (July 3, 1923 – September 15, 1983) was an American jazz singer who specialized in ballads and earned critical acclaim, though he was never widely known. He recorded a well-known collaboration with the saxophonist John Coltrane in 1963 called John Coltrane and Johnny Hartman, and was briefly a member of Dizzy Gillespie's group and recorded with Erroll Garner. Most of Hartman's career was spent recording solo albums.

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