Mad Max is an Australian apocalyptic science fiction action film from 1979 directed by George Miller and written by Miller and Byron Kennedy. The film, which starred the then little-known Mel Gibson was released internationally in 1980.

This low-budget film's story of societal breakdown, murder, and vengeance turned out to be a box office hit; it was notable for decades for having the highest profit-to-cost ratio of any motion picture, only losing the record in 1999 to The Blair Witch Project. The movie was also notable for being the first Australian film to be shot with a widescreen anamorphic lens.

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