Cophixalus montanus is a species of frog in the family Microhylidae. It is endemic to Halmahera in the Maluku Islands, Indonesia; record from New Guinea was based on misidentification. Its natural habitat is unknown but presumably is rainforest. References montanus Amphibians of Indonesia Endemic fauna of Indonesia Fauna of Halmahera Taxonomy articles created by Polbot Amphibians described in 1895