George Julius Engelmann (July 2, 1847 – November 16, 1903) was an American obstetrician and gynecologist who was a native of St. Louis. He was the son of botanist Georg Engelmann (1809-1884). In 1867 Engelmann graduated from Washington University in St. Louis, and from 1867 until 1873, he studied medicine in Europe (Berlin, Tübingen, Vienna and Paris). In Tübingen he studied under Felix von Niemeyer (1820-1871) and Victor von Bruns (1812-1883), and in Berlin he had as instructors: Bernhard von Langenbeck (1810-1887), Rudolf Virchow (1821-1903) and Friedrich Theodor von Frerichs (1819-1885). During the Franco-Prussian War (1870–71), he participated as a volunteer surgeon.