Bothriembryon Pilsbry, 1894 is a large-bodied genus of native Australian land snail found mostly in the mesic south of Western Australia. These snails are largely absent from more northerly areas of Western Australia although an undescribed species has long been known from the central Pilbara. We describe Bothriembryon rocketi sp. nov. from the Hamersley and Barlee Ranges, the northernmost record of the genus in the country. We provide diagnostic genetic and shell morphological characters, as well as ecological notes and review internal anatomy.