Marion Cotillard (French pronunciation: ; born 30 September 1975) is a French actress and singer. She garnered critical acclaim for her roles in films such as My Sex Life... or How I Got Into an Argument, Taxi, Furia and Jeux d'enfants. She has also appeared in such films as Big Fish, A Very Long Engagement (for which she received a César Award for Best Supporting Actress), A Good Year, Public Enemies, Nine, Inception and La Vie en Rose.

She won the Academy Award for Best Actress, BAFTA Award for Best Actress, César for Best Actress and the Golden Globe for Best Actress in Musical or a Comedy for her portrayal of French singer Édith Piaf in La Vie en Rose. She made film history by becoming the first person to win an Academy Award for a French language performance. In 2010 she received a Golden Globe nomination for her performance in the musical Nine.

Cotillard was born in Paris and grew up around Orléans, Loiret in an artistically inclined, "bustling, creative household". Her father, Jean-Claude Cotillard, is an actor, teacher, former mime, and 2006 Molière Award-winning director. Cotillard's mother, Monique (now known as Niseema) Theillaud, is also an actress and drama teacher.