Marc Simenon
- Birthday: 1939-04-19
- Deathday: 1999-10-24
- Place of birth: Brussels, Belgium
- Also know as: Marc Jean Chrétien Simenon
Marc Jean Chrétien Simenon, (19 April 1939 in Brussels – 24 October 1999 in Paris) was a Belgian born French director and screenwriter. He was the son of writer Georges Simenon (1903-1989) and the husband of Mylène Demongeot from 16 September 1968. He died falling down the stairs at his home in Paris.
