Julie Delpy (born December 21, 1969) is a French-American actress, film director, screenwriter, and singer-songwriter.

She played Constance in The Three Musketeers and Serafine Pigot in the Hollywood Pictures film An American Werewolf in Paris. She also played Madame B. in Avengers: Age of Ultron.

She also played Marguerite in CinéMagique at the Walt Disney Studios Park in Disneyland Paris.