The Allegheny Trail is a 330-mile (530 km) hiking trail that passes through the Allegheny Mountains in West Virginia, and part of western Virginia, United States. It is the longest named trail in the state excepting the Appalachian Trail, 4 miles (6.4 km) of which traverses the state at Harper's Ferry.

The trail is broken down into four sections. It was initiated in 1975, and is being built and maintained by the West Virginia Scenic Trails Association, volunteer association. The trail has a lot of natural diversity and offers hikers of all skill levels a challenge.

The northern terminus of the Allegheny Trail is near Bruceton Mills at the Mason–Dixon line, which here represents the boundary between West Virginia and Pennsylvania. The Allegheny Trail ends at the Appalachian Trail on Peters Mountain on the Virginia – West Virginia border. In 2021, Michael Green aka "Boomerang" became the first hiker to complete the trail in winter, hiking the entire trail from December 5, 2020 to January 15, 2021.