Upton Scudamore is a village and civil parish in Wiltshire, England. The village lies about 1.8 miles (3 km) north of the town of Warminster and about the same distance south of Westbury. The parish includes the hamlet of Halfway. The village occupies a ridge which is the watershed between tributaries of the Bristol Avon and those of the Hampshire Avon. Upton Cow Down rises above the village to the north-east, on the western edge of Salisbury Plain. Springs in the north of the parish are the source of the River Biss, known here as the Biss Brook.