The Chessmen of Mars is an Edgar Rice Burroughs science fiction novel, the fifth of his famous Barsoom series. Burroughs began writing it in January, 1921, and the finished story was first published in Argosy All-Story Weekly as a six-part serial in the issues for February 18 and 25 and March 4, 11, 18 and 25, 1922. It was later published as a complete novel by A. C. McClurg in November, 1922.