Ludivine Sagnier (born 3 July 1979) is a French actress and model who has appeared on screen since 1989. She was nominated three times for the César Award for Best Supporting Actress for Swimming Pool (2003), Peter Pan (2003), and A Secret (2007).

Personal life
Sagnier was born in La Celle-Saint-Cloud, in the département of Yvelines, France. Her mother is a retired secretary and her father is a professor of English at the Paris University.

Sagnier gave birth to her daughter Bonnie with her boyfriend, actor Nicolas Duvauchelle in 2005. Sagnier is the partner of French film director Kim Chapiron, with whom she has two daughters, Ly Lan, born in 2009 and Tàm, born in 2014.