Compton Valence is a small village and civil parish in the county of Dorset in southern England. It lies within the West Dorset administrative district, approximately 7 miles (11 km) west of the county town Dorchester. It is sited at the head of a narrow valley, formed by a small tributary of the River Frome, and is surrounded by the hills of the Dorset Downs, which has led to it having been described as "a pocket of habitation in the downs." Dorset County Council estimate that in 2013 the population of the parish was 50.