| Official Name: | Haydon |
| Civil Parish: | Haydon |
| Country: | England |
| Region: | South West England |
| Coordinates: | 50.941°N -2.471°W |
| Os Grid Reference: | ST670158 |
| Unitary England: | Dorset |
| Shire County: | Dorset |
| Hide Services: | Yes |
| Population: | 44 |
| Population Ref: | (2001 census) |
| Area Total Km2: | 1.89 |
| Static Image: | Parish Church of St Catherine - Haydon - geograph.org.uk - 386252.jpg |
| Static Image Caption: | Former church of St Catherine |
| Constituency Westminster: | West Dorset |
Haydon is a village and civil parish 16miles north of Dorchester,[1] in the Dorset district, in the county of Dorset, England. In 2001 the parish had a population of 44.[2] The parish touches Castleton, Caundle Marsh, Folke, Goathill, North Wootton and Purse Caundle.[3]
There are three listed buildings in Haydon.[4] Among them is the former St Catherine's Church, which is now in residential use.[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.
The name "Haydon" probably means 'Hay-down' though the 1st part may be "hedge-enclosure".[6] The village is one of the possible sources of the surname Haydon.[7] On 25 March 1886 part of Haydon parish were transferred to the parish of Holnest. The transferred area contained 2 houses in 1891.[8]