Diuris aequalis, commonly called the buttercup doubletail,[3] is a species of orchid which is endemic to New South Wales.

It has two rolled leaves and spikes of two to five golden-yellow to orange flowers and is currently listed as "Endangered".

[3][4]Diuris aequalis was first formally described in 1876 by Robert D. FitzGerald in his book Australian Orchids from an unpublished description by Ferdinand von Mueller.

[7] Buttercup doubletail orchid occurs on the ranges and tablelands of New South Wales between Braidwood and the Kanangra-Boyd National Park where it grows in forest and low open woodland with a grassy understory, often on gentle slopes.

The threats to its survival include land clearing, grazing, road maintenance and illegal rubbish dumping.