Jean Lenoir may refer to:

• Jean-Charles-Pierre Lenoir (1732–1807), French lawyer and policeman
• Jean-Claude Lenoir (born 1944), member of the National Assembly of France
• Jean Lenoir (composer) (1891–1976), French film and popular composer
• Étienne Lenoir (1822–1900), also known as Jean J. Lenoir, built the first practical gas engine

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