Warton Crag is a limestone hill in north west Lancashire, England. It lies to the north west of Warton village, in City of Lancaster district. At 163 metres (535 ft) it is the highest point in the Arnside and Silverdale Area of Outstanding Natural Beauty, and is listed as a "HuMP" or "Hundred Metre Prominence", its parent being Hutton Roof Crags. Two areas are Local Nature Reserves, called Warton Crag and Warton Crag Quarry. Different sections are owned by Lancashire County Council, the Wildlife Trust for Lancashire, Manchester and North Merseyside, Lancaster City Council and the Royal Society for the Protection of Birds.
Many plants are found on the crag, including horseshoe vetch near its northern limit, spindle tree and many ferns. The site is rich in butterflies, including the rare pearl bordered fritillary and high brown fritillary.
The former quarry on the west of the crag is a regular breeding site for peregrine falcons and is protected by a Falcon Watch team of volunteers.
The crag is used by rock-climbers, and a fell race on the crag takes place annually as part of Warton Children's Sports Day.
Coordinates: 54°08′51″N 2°46′51″W / 54.1476°N 2.7807°W