Cheat Mountain is an exceptionally high and rugged ridge situated in the Allegheny Mountains of eastern West Virginia, USA. It is about 50 miles (80 km) long and more than five miles (8 km) wide at its widest. Its highest point is at its southernmost end at Thorny Flat, which has an elevation of 4,848 feet (1,478 m). Several other knobs rise above 4,000 feet (1,200 m) along its length.

The Allegheny Mountain Range, informally the Alleghenies, is part of the vast Appalachian Mountain Range of the Eastern United States and Canada and posed a significant barrier to land travel in less developed eras. The Allegheny Mountains have a northeast–southwest orientation, running for about 300 miles (480 km) from north-central Pennsylvania, southward through western Maryland and eastern West Virginia.