Mara Maru is a 1952 American noir action film starring Errol Flynn, Ruth Roman and Raymond Burr. Directed by Gordon Douglas, it was the last movie Flynn made for Warner Bros where he had started out in Hollywood in 1935.

Flynn did go on to appear in a British film The Master of Ballantrae that was released by Warners, and return to make Too Much, Too Soon where he played his friend John Barrymore.