John Kirkpatrick (18 March 1905 – 8 November 1991) was an American classical pianist and music scholar, best known for championing the works of Charles Ives, Aaron Copland, Carl Ruggles, and Roy Harris. He gave the first complete public performance of Ives's Concord Sonata in 1939, which became a turning point in the composer's public recognition. At the time of his death Kirkpatrick was a professor emeritus at Yale University, where he had also been the curator of the Charles Ives archives.