Winterbourne Steepleton is a village and civil parish in south west Dorset, England, situated in a winterbourne valley 5 miles (8.0 km) west of Dorchester, next to the village of Winterbourne Abbas. The name of the village derives from its site next to a seasonal winterbourne stream and from having a stone church steeple - one of only three medieval stone spires in the county (the others being at Iwerne Minster and Trent). In the 2011 census the parish had a population of 297.