Cow Island may refer to: Cow Island, Louisiana Cow Island, Maine Cow Island, Montana Cow Island, Ontario See also Île-à-Vache (Vache is cow in French), Haiti Île aux Vaches in the Hochelaga Archipelago, Quebec Île aux Vaches on the Seine river in France, that later formed part of Île Saint-Louis Sea Cow Island, Indian Ocean Vache Island, Seychelles