Marion Cotillard (born September 30, 1975) is a French actress, film producer, singer, songwriter, and environmentalist. Known for her roles in independent films and blockbusters, she has received various accolades, including an Academy Award, a British Academy Film Award, a Golden Globe Award, a European Film Award, a Lumières Award, and two César Awards. She became a Knight of the Order of Arts and Letters in France in 2010, and was promoted to Officer in 2016. She has served as a spokeswoman for Greenpeace since 2001. Cotillard was the face of the Lady Dior handbag for nine years. Since 2020, she is the face of Chanel's fragrance Chanel No. 5.

Cotillard had her first English-language role in the television series Highlander (1993), and made her film debut in The Story of a Boy Who Wanted to Be Kissed (1994). Her breakthrough came in the successful French film Taxi (1998), which earned her a César Award nomination for Most Promising Actress. She made the transition into Hollywood in Tim Burton's Big Fish (2003), and won her first César Award for Best Supporting Actress for her performance as Tina Lombardi in Jean-Pierre Jeunet's A Very Long Engagement (2004).