Holy Cross Abbey (Mainistir na Croise Naofa) was a Cistercian monastery in Holycross near Thurles, County Tipperary, Ireland, situated on the River Suir. It takes its name from a relic of the True Cross or Holy Rood.

Holycross is a village and civil parish in County Tipperary, Ireland. It is one of 21 civil parishes in the barony of Eliogarty. The civil parish straddles two counties and the baronies of Eliogarty and of Middle Third. It is also an ecclesiastical parish in the Roman Catholic Archdiocese of Cashel and Emly.