Captains of the Clous is a 1942 Warner Bros. war film, directed by Michael Curtiz and starring James Cagney. It was produced by William Cagney (James Cagney's brother), with Hal B. Wallis as executive producer. The screenplay was written by Arthur T. Horman, Richard Macaulay and Norman Reilly Raine, based on a story by Horman and Roland Gillett. The cinematography was by Wilfred M. Cline and Sol Polito and was notable in that it was the first feature length Hollywood production filmed entirely in Canada.