The Cercle des nageurs de Marseille (Circle of Marseille's swimmers) is an elite swim club based in Marseille, France, founded in 1921. It is best known for its water polo team which is the most decorated in France, and also for training many of the French Olympic swimmers, including Frédérick Bousquet, Fabien Gilot, Camille Lacourt, Florent Manaudou, Laure Manaudou and others.