Catherine Ringer is a French singer, songwriter, composer, multi-instrumentalist, dancer, choreographer, actress, and co-founder of the pop rock group Les Rita Mitsouko. She is the daughter of French artist Sam Ringer. She is also the lead vocalist for Plaza Francia Orchestra where she performs with Eduardo Makaroff and Christoph H. Müller, formerly of Gotan Project.

Les Rita Mitsouko were a French pop rock group formed by Fred Chichin and Catherine Ringer. The duo first performed as Rita Mitsouko at Gibus Club in Paris in 1980. They went on to become one of the most acclaimed musical acts in France. "Marcia Baila", their debut single produced by Conny Plank, went to number 2 in the French singles chart in 1984. They then started a collaboration with producer Tony Visconti on two albums: the No Comprendo (1986) and Marc & Robert (1988). "Singing in the Shower", sung as a duet with Sparks, was a commercial success in France and was then heavily played on US dance radio stations in 1988. Iggy Pop also collaborated with them on 1993's Système D, duetting with Ringer on "My Love Is Bad".