North Entrance Road Historic District, Historic district in Park County, United States.

The North Entrance Road Historic District is a road corridor, not a group of buildings: it follows the former North Entrance Road from Gardiner, Montana, to Mammoth, Wyoming, a little over five miles along the Gardner River. The route includes the Roosevelt Arch at the park boundary and crosses the river twice before joining the Grand Loop Road.

The road was planned in 1883 by Lieutenant Dan Kingman of the U.S. Army Corps of Engineers and later improved by Captain Hiram M. Chittenden. It replaced the old Gardiner High Road and linked Fort Yellowstone with the Northern Pacific station at Gardiner. The first permanent entrance station replaced rangers' tents at the Roosevelt Arch in 1921. The road was largely washed away in the 2022 Montana floods, and Old Gardiner Road was designated the North Entrance Road that October.

The road is named for its role as the park's northern entry, marked by the Roosevelt Arch at the boundary in Gardiner. Rangers first checked vehicles from tents at the arch before a permanent entrance station was built in 1921. The historic district was listed on the National Register of Historic Places on May 22, 2002.

The historic road runs from Gardiner, Montana, to Mammoth Hot Springs, Wyoming, following the Gardner River for most of its length and crossing it twice. Since the 2022 floods washed out the original route, through traffic uses Old Gardiner Road, now designated North Entrance Road, which shares short concurrency with the old road at both ends.

The road was planned in 1883 by Lieutenant Dan Kingman of the U.S. Army Corps of Engineers and later improved by Captain Hiram M. Chittenden. It replaced the old Gardiner High Road, which climbed the ridges west of the river from behind the Mammoth Hotel to Gardiner. The first permanent entrance station, replacing rangers' tents at the Roosevelt Arch, was built in 1921.