Cassington is a village and civil parish in Oxfordshire about 5 miles (8 km) northwest of Oxford. The village lies on gravel strata about 1⁄2 mile (800 m) from the confluence of the River Evenlode with the River Thames.The parish includes the hamlet of Worton northeast of the village and the site of the former hamlet of Somerford to the south. Somerford seems to have been abandoned early in the 14th century.