Antonín Jan Jungmann, sometimes referred to as German: Anton Johann Ritter von Jungmann (19 May 1775 – 10 April 1854) was a Czech obstetrician and educator born in Hudlice, Beroun District. He was a younger brother to linguist Josef Jungmann (1773–1847). In 1811 he was appointed professor of obstetrics to the medical faculty at Prague, and in 1838 he became university rector. He gave lectures in German and Czech, and collaborated with his brother on the latter's linguistic projects. He remained at the University of Prague until his retirement in 1850. Jungmann was a Czech pioneer of Sanskrit studies, being the author of O sanskrtu (On Sanskrit, 1821).