Aghnamoira () is a rural townland in County Down, Northern Ireland. It has an area of 569.63 acres (2.31 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-west of Warrenpoint. It lies within the Newry, Mourne and Down District Council.