Shanaghy (Irish: Sean-Achaidh) is a townland to the east of Ballina in County Mayo, Ireland. It is in the parish of Kilmoremoy, and is part of Ardnaree for the purposes of Gaelic Athletic Association. It begins at the top of Ardnaree and extends eastwards along the main Bonniconlon Road, where it is bordered by the townlands of Mullauns, Rathkip and Behy. The exact border with Rathkip is often quite difficult to define, with the old course of the River Brusna being the boundary. In general, the south bank of the river is Shanaghy, however the course has changed over time and some houses on the South of the River Brusna would be considered Rathkip.