William Harold "Baldy" Cotton (November 5, 1902 - September 9, 1984) was a professional ice hockey player from Nanticoke, Ontario. Cotton got his start in ice hockey with the junior Toronto Aura Lee, Toronto Maitlands, and Parkdale Canoe Club of the Ontario Hockey Association from 1919-23. Soon thereafter, Cotton moved to Pittsburgh where he attended DuQuesne University while also playing hockey for the Pittsburgh Yellow Jackets of the United States Amateur Hockey Association.