Aghavilly () is a rural townland in County Down, Northern Ireland. It has an area of 423.05 acres (1.71 km<sup>2</sup>). It is situated in the civil parish of Clonallan and the historic barony of Iveagh Upper, Upper Half, located 2 miles north of Warrenpoint. It lies within the Newry City and Down District Council. Aghavilly is also known as Aughavilly.