Hélène Langevin-Joliot is a French nuclear physicist. She received her doctorate from the Collège de France. She is a professor of nuclear physics at the Institute of Nuclear Physics at the University of Paris and Emeritus Director of Research at the Centre national de la recherche scientifique.
She is the granddaughter of Nobel Prize-winning physicists Marie and Pierre Curie and the daughter of Nobel Prize winners Irène and Frederic Joliot-Curie.