Melaleuca undulata, commonly known as hidden honey-myrtle is a shrub in the myrtle family Myrtaceae and is endemic to the south of Western Australia.

It is a spreading, moderately dense, perennial, woody shrub with creamy-white flowers in small clusters.

[2][3] Melaleuca undulata was first formally described in 1867 by George Bentham in Flora Australiensis.

[3] Melaleuca undulata is classified as "not threatened" by the Government of Western Australia Department of Parks and Wildlife.

[7] This is a hardy species suitable as a low, informal, prickly hedge.