The Chibchan water mouse (Chibchanomys trichotis) is a species of rodent in the family Cricetidae. It is found in the Andean highlands of Colombia, Peru, and Venezuela. Its natural habitats are tropical cloud forests and streams at elevations from . It feeds on snails and possibly small fish. It is the only currently described species in the genus Chibchanomys. It is a dull gray to black rat with a pale gray venter. The rat's tail is slightly longer than its body, measuring compared to a head-body length of .