Ballygowan is a village in County Down, Northern Ireland. It is within the Ards and North Down Borough. The town of Comber is a short distance to the north-east, the town of Saintfield to the south, and the city of Belfast further to the north-west. It is within the civil parishes of Killinchy and Comber and is split between the historic baronies of Castlereagh Lower and Castlereagh Upper. It had a population of 3,138 people in the 2021 Census.