William Harlow Reed (9 June 1848 – 24 April 1915) was an American fossil collector and pioneer. He served as a curator at the Museum of Geology at the University of Wyoming, Laramie. He collected for a while for Othniel Charles Marsh but left after clashing with rival collectors at the height of the Bone Wars. Among his major finds was a near complete skeleton of a Brontosaurus (Apatosaurus) from Como Bluff. Reed's quarry in Como Bluff is named after him.