Tribulus platypterus, the cork hopbush, is a species of flowering plant in the family Zygophyllaceae, which is endemic to the northwest of Western Australia.

[5] It was first described by George Bentham in 1863 from a specimen collected by Francis Thomas Gregory in the Hammersley Ranges.

[1][2] An isosyntype (MEL 79454) collected by Gregory (east of the Hammersley Ranges) is held in the National Herbarium of Victoria.

[6] The specific epithet, platypterus, is derived from two Greek roots/words, platy- ("broad") and -pterus, ("winged"), and describes the plant as having "broad-winged" fruit.

[5] It is found in the IBRA Regions of the Central Kimberley, the Gascoyne, the Little Sandy Desert, the Murchison, and the Pilbara,[4] in rocky areas, including creek banks and beds, and often in sand.