August Wilhelm Heinrich Blasius (5 July 1845 in Braunschweig – 31 May 1912 in Braunschweig) was a German ornithologist. Blasius belonged to a family of scientists: his father was the ornithologist Johann Heinrich Blasius (1809-1870) and his brother was the ornithologist Rudolf Heinrich Paul Blasius (1842-1907). In 1871 he became a professor of zoology and botany at the Braunschweig University of Technology. He also served as director of its natural history museum and botanical gardens. He was a member of the council for the Deutsche Ornithologen-Gesellschaft (German Ornithological Society).

Selected writings