Llanddowror is a village and community in Carmarthenshire, Wales situated 2 miles (3 km) from St. Clears.

Previously on the trunk road to Pembroke Dock, the village is small, historic and relatively unspoilt.

Llanddowror is famous for being the home of its rector, Griffith Jones, the 18th century Anglican educator and promoter of Methodism, who was funded by Bridget Bevan in organising circulating schools to spread literacy in Carmarthenshire.

A new bypass improvement scheme for the section of the A477 trunk road between St Clears and Red Roses was approved by the Welsh Government on 27 January 2012.

Llanddowror has lent its name to the British Raj-era hill station of Landour (now in Mussoorie, Uttarakhand) in the Lower Western Himalaya in northern India.