C. montanus

C. montanus may refer to:


 * Callistemon montanus, or mountain bottlebrush
 * Cercocarpus montanus, or mountain mahogany
 * Caelostomus montanus, a ground beetle in the subfamily Pterostichinae
 * Chalcides montanus, a skink found in the Atlas Mountains in Morocco
 * Chrysops montanus, a deer fly of the family Tabanidae
 * Cophixalus montanus, a frog species endemic to Indonesia
 * Cybaeus montanus, a spider of the family Cybaeidae