Winterborne and Broadmayne is an electoral ward in Dorset. Since 2019, the ward has elected 1 councillor to Dorset Council.
The ward covers a large rural area between Dorchester and Weymouth. It is composed of the civil parishes of Bincombe, Broadmayne, Tincleton, West Knighton, West Stafford, Whitcombe, Winterbourne Abbas, Winterborne Came, Winterborne Herringston, Winterborne Monkton, Winterborne St Martin, Winterbourne Steepleton and Woodsford.