Léon Wieger (born 9 July 1856 in Strasbourg, France - died 25 March 1933 in Xian County, Hebei, China), was a French Jesuit missionary, medical doctor, theologist and sinologist who worked at the Catholic Jesuit mission in Hejian, together with Séraphin Couvreur.
He published numerous books on Chinese culture, Taoism, Buddhism and the Chinese language.