Mount Bross is a high mountain summit in the Mosquito Range of the Rocky Mountains of North America. The 14,178-foot (4,321 m) fourteener is located in Pike National Forest, 4.1 miles (6.6 km) northwest by north of the Town of Alma in Park County, Colorado, United States. Mount Bross is named in honor of William Bross, who owned property in the area.