John Haldane may refer to:
John Haldane (MP) (1660–1721), MP for Scotland in the 1st Parliament of Great Britain John Scott Haldane (1860–1936), British physiologist John Haldane (priest) (1881–1938), Provost of Southwark John Burdon Sanderson Haldane (1892–1964), British biologist John Haldane (philosopher) (born 1954), British philosopher