Insular Newfoundland lacks native amphibians, however four species have been successfully introduced. We surveyed 90 sites in western Newfoundland to determine current species distribution and to evaluate the influence of aquatic and terrestrial habitat characteristics on anuran distribution and dispersal potential. Wood frog (Rana sylvatica) presence (19 sites) was not significantly related to any measured variable. American Toad (Bufo americanus) (52 sites) and Green Frog (Rana clamitans) presence (25 sites) was significantly related to dissolved oxygen. Toad presence was also related to marsh abundance, while Green Frog presence was related to site permanence and presence of human residences. Mink frog (Rana septentrionalis) was found at one site only.