Nicholas Lucien Leclerc (Ville-sur-Illon, 1816-Ville-sur-Illon, 1893) was a French military doctor, translator, and influential early western historian of medicine in the medieval Islamic world. He was an assistant military surgeon in Algeria from 1840-1844. His Histoire de la médecine arabe (Paris, 1876) was one of the first major histories of Arabic medicine, but has subsequently been superseded in many areas.