Hatchet Lake Denesuline Nation (Chipewyan: Tthpø Tuwé) is a Denesuline First Nation in northern Saskatchewan. The main settlement, Wollaston Lake, is an unincorporated community on Wollaston Lake in the boreal forest of north-eastern Saskatchewan, Canada. The population centre comprises the northern settlement of Wollaston Lake, an unincorporated community in the Northern Saskatchewan Administration District, and the adjoining First Nations community of Wollaston Post, the administrative headquarters of the Hatchet Lake Dene First Nation band government.