Mount Norris, Mountain summit in Yellowstone National Park, Wyoming, United States.

Mount Norris is a summit in the Absaroka Range within Yellowstone National Park that rises to about 9,800 feet. Its slopes feature volcanic rock and show signs of ancient mineral deposits from the region's geological past.

The peak was climbed in 1875 by Philetus Norris and guide Jack Baronette, leading to its naming. This early exploration was part of the first systematic investigations of the newly established Yellowstone Park.

The peak carries the name of Philetus Norris, an early park superintendent whose work shaped Yellowstone's development, making it a landmark of the park's heritage. From the summit on clear days, visitors can see across the Absaroka Range and into the Lamar Valley below.

Mount Norris rises above the head of the Lamar Valley, a few kilometres south of the Montana border. The summit is reached by a steep, unmarked route with no maintained trail, so hikers need route-finding skills and should allow a full day. Snow can linger on the upper slopes into early summer.

Philetus Norris and the guide Collins Jack "Yellowstone Jack" Baronette climbed the peak in 1875 and assumed they were the first white men to do so, then named it after Norris. The summit rises above the head of the Lamar Valley, a few kilometres south of the Montana border.