Gray Mountain (US) or Grey Mountain (UK) may refer to:
Places
edit- Gray Mountain, Arizona, unincorporated community in Coconino County, Arizona
- Gray Mountain (Kentucky), a mountain in Kentucky, location of John Shell Cabin
- Gray Mountain, a summit in Missouri
- Gray Mountain, Peloncillo Mountains (Hidalgo County) New Mexico - site of Battle of Mount Gray
- Gray Mountain, Whitehorse, Yukon, in Canada