|Welsh: Sain Dunwyd|
St Donats shown within the Vale of Glamorgan
|Principal area||Vale of Glamorgan|
|Ceremonial county||South Glamorgan|
|Sovereign state||United Kingdom|
|Post town||Llantwit Major|
|UK Parliament||Vale of Glamorgan|
|Welsh Assembly||Vale of Glamorgan|
St Donats (Welsh: Sain Dunwyd) is a village and community in the Vale of Glamorgan in south Wales, located just west of the small town of Llantwit Major. The community includes the village of Marcross and the hamlets of Monknash and East and West Monkton. It is named after the 6th-century saint, Dunwyd, a friend of Saint Cadoc. It has a population of 686.
St. Donat's church lies in a depression and is unremarkable from the exterior but contains Stradling family monuments in the Stradling chapel. It is a 12th-century Grade I listed building  with a Grade I listed medieval cross in the churchyard. 
The village is internationally known as the location of the 12th century St Donat's Castle which is now an international boarding school occupied by Atlantic College, the first of fourteen United World Colleges. Within the castle grounds lies St Donat's Arts Centre.
- "Community population 2011". Retrieved 10 April 2015.
- Census 2001
- "Church of St Donat, St Donats". British Listed buildings. Retrieved 22 July 2015.
- "Medieval Cross and associated Slab in the Churchyard of the Church of St Donat, St Donats". British Listed buildings. Retrieved 22 July 2015.
Media related to St Donats at Wikimedia Commons