Calothamnus gibbosus, commonly known as corky net-bush, is a plant in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia. Its distinguishing characteristic is its corky bark in which the hypanthium of the flowers and much of the fruits is buried. Only the petals and stamens emerge from the bark. (In 2014 Craven, Edwards and Cowley proposed that the species be renamed Melaleuca protumida.)