William (Bill) Dempsey MBE is a former Australian rules footballer who played for the Darwin (Buffaloes) Football Club in the Northern Territory Football League (NTFL) and the West Perth Football Club (Cardinals) in the Western Australian National Football League (WANFL). Born in Birdum (NT), and descended from the Jingili, Warramunga and Ngalakan peoples, Bill Dempsey is an inductee of both the AFL Northern Territory and the West Australian Football Halls of Fame.