Ballybannon is a small townland on the outskirts of the village of Annsborough in County Down, Northern Ireland. Ballybannon townland, which is approximately 562 acres (2.27 km²) in area, lies within the civil parish of Kilmegan. The Ballybannan ASSI, a nearby Area of Special Scientific Interest, is a wetland with two small areas of vegetation. The Ballybannan River flows through the area.

54°15′27″N 5°54′16″W / 54.25750°N 5.90444°W / 54.25750; -5.90444