Mount Cordeaux is a mountain near Brisbane, Australia and rises 1,135 m. It lies to the immediate north of Cunninghams Gap in the Main Range National Park. It is known to the Aboriginal People as Niamboyoo, however, the meaning is unknown. It appears that early usage on names for the mountain varied, as a 29 September 1897 report in the Warwick Examiner and Times, refers to "the well-known Cunningham's Gap, with its twin sentinel peaks, Coonyinirra and Niamboyoo".