Haytor, also known as Haytor Rocks, Hay Tor, or occasionally Hey Tor, is a granite tor on the eastern edge of Dartmoor in the English county of Devon.

A tor, which is also known by geomorphologists as either a castle koppie or kopje, is a large, free-standing rock outcrop that rises abruptly from the surrounding smooth and gentle slopes of a rounded hill summit or ridge crest. In the South West of England, the term is commonly also used for the hills themselves – particularly the high points of Dartmoor in Devon and Bodmin Moor in Cornwall.