Haydon is a village and civil parish 16 miles (26 km) north of Dorchester,[1] in the Dorset district, in the county of Dorset, England.

[2] The parish touches Castleton, Caundle Marsh, Folke, Goathill, North Wootton and Purse Caundle.

[5] The small church, in dressed stone with a bell-cote, was built in 1883 to replace an earlier church; it had a medieval piscina and some 17th-century pews.

[6] The name "Haydon" probably means 'Hay-down' though the 1st part may be "hedge-enclosure".

[7] The village is one of the possible sources of the surname Haydon.