J.M. Ritchie may refer to:
James Ritchie (rugby union) (1907–1942), Scottish rugby union player James M. Ritchie (1829–1918), American politician James Martin Ritchie (1917–1993), chairman of Bowater's Jim Ritchie (businessman) (1907–1981), New Zealand businessman and Anglican church administrator Jim Ritchie (* 1929 in Montreal), Canadian sculptor