Mylène Demongeot (born Marie-Hélène Demongeot; 29 September 1935) is a French actress with a career spanning six decades. She has appeared in 72 films since 1953. Demongeot gained fame and adulation for her portrayal of Abigail Williams in the Franco-East German production The Crucible (1957), for which she was nominated for BAFTA Awards for Most Promising Newcomer to Film. The blonde actress has performed in adventures like Vengeance of the Three Musketeers (1961) as Milady de Winter and in comedies like Fantômas (1964) directed by André Hunebelle. In the US, she co-starred with David Niven in Otto Preminger's Bonjour Tristesse (1958). In Britain she co-starred in several comedies, including It's A Wonderful World (1956) and Upstairs and Downstairs (1959). She was also nominated for César Awards for Best Supporting Actress in 36 Quai des Orfèvres (2004) and La Californie (2006). Between September 2013 and June 2014, she was a columnist member of the radio show Les Grosses Têtes by Philippe Bouvard on RTL. She is a member of the honor committee of the Association for the Right to Die with Dignity (ADMD). Demongeot was born in Nice, Southern France. She was married to director Marc Simenon from 1968 until his death in 1999.

• Bonjour Tristesse (1958)

  
• La battaglia di Maratona (1959)

  
• Elle s'en va (2013)

  
• Si tu meurs, je te tue (2011)

  
• Tenue de soirée (1986)