Ballyhaunis (Irish: Béal Átha hAmhnais, meaning 'ford-mouth of strife') is a town in County Mayo, Ireland. It is at the crossroads of the N60 and N83 National secondary roads and on the railway line linking Dublin to Westport and Ballina. It is thought that the town grew up around St Mary's Augustinian Friary (popularly referred to as "the Abbey"), which was founded in 1348, according to local tradition. The town and its hinterland contain a number of megalithic monuments. Ballyhaunis is within both the Roman Catholic and civil parishes of Annagh.