Cyrtostylis reniformis, commonly known as common gnat-orchid, is a species of orchid endemic to eastern Australia. It usually has a single kidney-shaped leaf and a flowering spike with up to eight reddish flowers with a shelf-like labellum. Cyrtostylis huegelii is a similar species occurring in Western Australia and which some authorities regard as a synonym of Cyrtostylis reniformis var. huegelii.