The Mysterious Miss C. (French: La mystérieuse Mademoiselle C.) is a Canadian children's fantasy-comedy film, directed by Richard Ciupka and released in 2002. The film stars Marie-Chantal Perron as Mademoiselle Charlotte, a quirky supply teacher who transforms the lives of a struggling class of elementary students. The film was adapted from the "Mlle. Charlotte" series of children's novels by Dominique Demers. The film was the sixth highest-grossing Canadian film of 2002.