Outram Bangs (January 12, 1863 – September 22, 1932) was an American zoologist.
Bangs was born in Watertown, Massachusetts as the second son of Edward and Annie Outram (Hodgkinson) Bangs. He studied at Harvard from 1880 to 1884, and became Curator of Mammals at the Harvard Museum of Comparative Zoology in 1900. He died at his summer home at Wareham, Massachusetts.
- The hummingbirds of the Santa Marta Region of Colombia American Ornithologists' Union, New York (1899)
- The Florida Puma Proceedings of the Biological Society of Washington 13:15–17. (1899)
- The Mammals and Birds of the Pearl Islands, Bay of Panama Harvard University Museum of Comparative Zoology, Bulletin 46 (8) : 137–160 (1905) with John Eliot Thayer
- Notes on the Birds and Mammals of the Arctic Coast of East Siberia New England Zoological Club, Proceedings, 5 : 1–66 (1914) with Glover Morrill Allen and J. E. Thayer