Mount Bross, Mountain summit in Park County, Colorado, US

Mount Bross is a 14,178-foot (4,321 m) summit in the Mosquito Range of the Rocky Mountains, located in Pike National Forest 4.1 miles northwest by north of Alma in Park County, Colorado. It is often climbed together with Mount Lincoln and nearby Mount Democrat.

Mount Bross is named after William Bross, who owned property in the area. In 2005, the summit was closed to the public because of safety concerns related to mines and trail access through private land.

Mount Bross is often climbed together with Mount Lincoln and nearby Mount Democrat, a combination known among Colorado peak-baggers as part of the Mosquito Range fourteeners. The peak's name honors William Bross, who owned property in the area.

The best climbing season runs from June through September, with early morning starts recommended to avoid afternoon storms. Visitors should prepare for steep terrain and thin air at high elevation.

The summit itself has been closed to the public since 2005 over safety concerns tied to mines and trail access across private land. The 14,178-foot peak is often climbed together with Mount Lincoln and nearby Mount Democrat, so many hikers reach its slopes while traversing that group.