Cytora brooki is a species of land snail that is endemic to New Zealand.
The height of the shell grows up to .
Cytora brooki is only found on the north west of the Aupà Âuri Peninsula, at elevations up to approximately . The species has been found in holocene dune fossils at Te Werahi.
Cytora brooki is listed under the New Zealand Threat Classification System as "Nationally Endangered".
Cytora brooki was named after due to his work on biogeography and "systematics of terrestrial pulmonates".
This species was described in 2007. A specimen is stored at Te Papa under registration number M.188693.