Frédéric R. Kirschleger (7 January 1804 in Munster, Haut-Rhin – 15 November 1869) was a French physician and botanist. Following studies in Strasbourg, he worked as an intern of pharmacy, first in Ribeauvillé, afterwards in the dispensary at Hôpital Civil of Strasbourg. In 1827-28 he studied medicine in Paris, receiving his doctorate with a thesis on the mineral waters of Vosges. In 1829 he returned to his hometown of Munster as a doctor, resigning from this position several years later in order to become a professor of botany at the school of pharmacy in Strasbourg (1834).