Claudine Monteil (born 1949) is a French writer, women's rights specialist, historian and a former French diplomat. She holds a Ph.D. based on study of Simone de Beauvoir's writings and life. Her mother, Dr Josiane Serre, was a chemist who became the director of the Ecole Normale Superieure de Jeunes Filles.Her father is Fields Medal and Abel prize winning mathematician Jean-Pierre Serre.
Monteil is one of the founders of the women's rights movement in 1970 along with being a specialist on Simone de Beauvoir. While working on women's rights, she was a long close friend of Beauvoir, Jean-Paul Sartre and Beauvoir's sister, the painter Hélène de Beauvoir. Her writings on the Beauvoirs, Sartre and French feminism, have been translated into multiple languages.