The Mentawi flying squirrel (Iomys sipora) is a species of rodent in the family Sciuridae. It is endemic to Indonesia where it is only known from the Mentawai Islands (Sipura and North Pagai). Its natural habitat is lowland tropical primary forest below 500m (1,600feet) above sea level. It is threatened by habitat loss.
It is endemic to the jungles of the Mentawai Islands (Indonesia).
It is threatened with extinction due to the loss of its natural habitat.