Longnor is a village in the Staffordshire Peak District, England. The settlement dates from early times, the first recorded Church building being in the Middle Ages.
The village was named Longenalre in the Domesday Book. Located on a major crossroads, Longnor was a significant market town in the 18th century. It lies on the north bank of the River Manifold, on a limestone ridge between the Manifold and the River Dove.
Longnor is situated on the B5053 main road from Cheadle to Buxton, about 6 miles (10 km) south of Buxton. It is at a cross roads with routes to Leek and Macclesfield to the west, and Bakewell to the east.
West of Longnor are the Staffordshire Moorlands, with a summit at Axe Edge Moor towards the north, and Morridge further south. North and east of Longnor is the White Peak section of the Peak District, with the Dove flowing in a steep-sided limestone valley of which the famous Dovedale is a small part.
Longnor village looks towards the Manifold, but lies on the southern slope of a limestone ridge between the two rivers.