Conostephium is a genus of flowering plants in the family Ericaceae and is endemic to the south-west of Western Australia.

The name of the genus comes from Greek words, conos, "cone" and stephanos, "that which encircles, a crown or wreath", referring to the petal tube that encloses the stamens.

At the same time, he transferred C. minus and C. preissii to the new genus, making Conostephium once more monotypic.

In 1886, Bentham in Flora Australiensis grouped the two genera and added a fourth species (Conostephium roei).

The latest additions were made (in 2013) by Michael Hislop, a botanical taxonomist at the Western Australian Herbarium[8] The following is a list of Conostephium species accepted by the Australian Plant Census as at March 2022:[9] All Conospermum species are endemic to the southwestern part of Western Australia.