The Atlantic whitefish (Coregonus huntsmani) is a coregonine fish inhabiting some freshwater lakes within Nova Scotia, Canada. It is known to survive only in the Petite Rivière watershed as landlocked populations. Earlier it was also found in the Tusket and Annis rivers of Nova Scotia. Those populations were anadromous, migrating to the estuary to feed while breeding in freshwater. The narrowly endemic Atlantic whitefish is genetically distinct from the lake whitefish (Coregonus clupeaformis) and the cisco (Coregonus artedi), which both are widespread across much of continental North America.