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

Mount Langford is a peak standing at about 10,600 feet in the Absaroka Range within Yellowstone National Park, characterized by steep slopes and exposed rock outcrops. The surrounding terrain features high alpine conditions and geological patterns shaped by volcanic activity and glacial processes.

The peak was climbed during the Washburn-Langford-Doane Expedition of 1870, one of the first systematic explorations of the Yellowstone region. This expedition helped convince the government to establish the area as a national park, which was officially created two years later.

The name honours Nathaniel P. Langford, who led the 1870 Washburn–Langford–Doane Expedition and became Yellowstone's first superintendent. His account in Scribner's helped persuade Congress to create the park in 1872. The mountain he and Lt. Gustavus Doane climbed on 7 September 1870 was later renamed Colter Peak, so the present Mount Langford carries a name Hayden moved north in 1871.

The climb requires advanced mountaineering skills and proper equipment, as the route crosses steep rocky sections where finding the path can be challenging. Weather conditions change rapidly at this elevation, so climbers should prepare for sudden storms and strong winds.

The peak Langford and Doane climbed on September 7, 1870 is not the one bearing the name today: in 1871 Hayden moved the name Mount Langford to a peak farther north, and the original summit stayed unnamed until 1885, when Arnold Hague called it Colter Peak. Langford sketched the first reasonably accurate map of Yellowstone Lake from the top.