Margaret Atwood: Once in August is a 1984 documentary film about Canadian writer Margaret Atwood, directed by Michael Rubbo and produced by the National Film Board of Canada (NFB). The film was made in Rubbo's trademark style of self-conscious documentary filmmaking or metafilm, with Rubbo foregrounding the creative process in making the film, including his frustrated attempts to uncover autobiographical influences in Atwood's work. It was his last film with the NFB.