Mount Mahler is a 12,497-foot-elevation (3,809-meter) mountain summit in Jackson County, Colorado, United States.

[6] The mountain is situated on the northern boundary of the Never Summer Wilderness, on land managed by Routt National Forest.

[1] Precipitation runoff from the mountain's slopes drains into tributaries of the Michigan River.

The mountain's toponym was officially adopted on October 18, 2006, by the United States Board on Geographic Names to honor Gustav Mahler (1860–1911), Austro-Bohemian Romantic composer and conductor.

[7] Due to its altitude, it receives precipitation all year, as snow in winter, and as thunderstorms in summer, with a dry period in late spring.