Mount Haynes, Mountain summit in Yellowstone National Park, Wyoming, US.

Mount Haynes is a peak in the Gallatin Range of the Rocky Mountains, in the western part of Yellowstone National Park, Wyoming, rising south of the Madison River valley west of Madison Junction. Sources give its elevation as 8,218 feet (2,505 m) or 2,510 m. An interpretive overlook on the Madison River faces the peak.

The peak was named by Yellowstone superintendent Horace Albright to honor Frank Jay Haynes (1853–1921), the park's first official photographer. Before that it was unofficially called Mount Burley, after D. E. Burley of the Union Pacific Railroad.

The name honours Frank Jay Haynes (1853–1921), the park's first official photographer, who began photographing Yellowstone in 1881. Before Horace Albright renamed it, the peak was unofficially called Mount Burley, after D. E. Burley of the Union Pacific Railroad.

The best view comes from the interpretive overlook at the Madison River, where signs explain the geological story. The spot is easy to reach and does not require any hiking to a summit.

Before it was named Mount Haynes, the peak was unofficially called Mount Burley, after D. E. Burley of the Union Pacific Railroad. Superintendent Horace Albright renamed it to honor Frank Jay Haynes (1853–1921), the park's first official photographer.