Powelliphanta patrickensis is a species of large, carnivorous land snail, a terrestrial pulmonate gastropod mollusc in the family Rhytididae.

This species is endemic to the South Island of New Zealand.

This species occurs only on the Denniston-Stockton Plateau on the South Island of New Zealand.

[2][3] Powelliphanta patrickensis is classified by the New Zealand Department of Conservation as being Nationally Critical.

[1] The population is threatened by mining, roading, and introduced predators such as thrushes, rats and possums.