Edgar Allen (May 2, 1892 – February 3, 1943) was an American anatomist and physiologist. He is known for the discovery of estrogen and his role in creating the field of endocrinology.Born on Cañon (Canyon) City, Colorado, Allen was educated at Brown University. After serving in World War I he took a position at Washington University in St. Louis until, in 1923, he was appointed to the chair of anatomy at the University of Missouri in Columbia, Missouri.