Balloo (from Irish: Baile Aodha, meaning "Hugh's townland") is a small village and townland near Killinchy in County Down, Northern Ireland. It is 5 miles south of Comber on the A22 road to Downpatrick. It is situated in the townland of the same name, the civil parish of Killinchy and the historic barony of Dufferin. It lies within the Borough of Ards. It had a population of 189 people (83 households) in the 2011 Census.