Phenacomys ungava Merriam, 1889, is an arvicoline rodent commonly known as the eastern heather vole. A small vole with a short tail and reddish to yellowish nose and eye rings, it is 1 of 2 currently recognized species in the genus Phenacomys. The species occurs in diverse habitats of the boreal forest ecosystem of Canada from Labrador to southern Yukon and from southern Quebec to southern Alberta, with isolated records from northeastern Minnesota. P. ungava is listed as “Least Concern” by the International Union for Conservation of Nature and Natural Resources.