Steve Passeur (24 September 1899 – 12 October 1966), pen name of Étienne Morin, was a French dramatist and screenwriter.

His plays with scathing replies often depicted cynical characters.

Prior to 1940, Passeur was considered as a writer of the avant-garde, whose works were staged and played by Louis Jouvet, Charles Dullin, Georges and Ludmilla Pitoëff.

He was married to the comedian Renée Passeur.