Mount Julian, Mountain summit in Rocky Mountain National Park, Colorado, US.

Mount Julian is a summit in the northern Front Range of the Rocky Mountains within the national park in Colorado. The peak rises to approximately 12,900 feet (3,935 meters) and displays exposed granite and gneiss rock formations.

The peak was named after Julian Hayden, an engineer who contributed to the early development of Estes Park in the late 1800s. The area became part of Rocky Mountain National Park when it was established in 1915 to protect the mountain landscape.

The mountain forms part of Rocky Mountain National Park's wilderness area, established in 1915 to protect Colorado's natural mountain landscapes.

Mount Julian lies 12.2 miles (19.7 km) west of Estes Park in Larimer County, inside the Rocky Mountain National Park Wilderness. There is no trail to the 12,933-foot (3,942 m) summit, so approach is by off-trail route-finding from park trailheads. Plan for the elevation gain and carry water and layers for sudden storms.

Mount Julian rises 12,933 feet (3,942 m) in the Rocky Mountain National Park Wilderness, 12.2 miles (19.7 km) west of Estes Park in Larimer County. Its name honours Julian Hayden, a civil engineer who lived in Estes Park.