Rhizanthella omissa is a species of flowering plant in the orchid family and is found in the Lamington National Park in Queensland.

It is a subterranean herb that grows in casuarina forest and flowers underground.

[2] It was first formally described in 2006 by David Jones and Mark Clements in the journal The Orchadian.

[3] The species is listed as "endangered" under the Queensland Government Nature Conservation Act 1992.

This Orchidoideae-related article is a stub.