Ludivine Sagnier is a French actress. She was nominated three times for the César Award for Best Supporting Actress for Swimming Pool (2003), Peter Pan (2003), and A Secret (2007).

The César Award for Best Actress in a Supporting Role is one of the César Awards, presented annually by the Académie des Arts et Techniques du Cinéma to recognize the outstanding performance in a supporting role of an actress who has worked within the French film industry during the year preceding the ceremony. Nominees and winner are selected via a run-off voting by all the members of the Académie.