Stonor /ˈstoʊ.nər/ is a mostly cultivated and wooded village centred 3.8 miles (6.1 km) north of Henley-on-Thames in South Oxfordshire, England. It takes up part of the Stonor valley in the Chiltern Hills which rises to 120m above sea level within this south-east part of the civil parish. Stonor House close to the village centre has been the home of the Stonor family for more than eight centuries. The house and park are open to the public at certain times of the year.