The Archbishop of Dublin is the head of the Archdiocese of Dublin in the Catholic Church, responsible for its spiritual and administrative needs. The office has existed since 1152, in succession to a regular bishopric since 1028. The archdiocese is the metropolitan see of the ecclesiastical province of Dublin, and the archbishop is also styled the Primate of Ireland. The cathedral church of the archdiocese is Saint Mary's Pro-Cathedral in Dublin city, although the Church formally claims Christ Church as its cathedral, and the archbishop's residence is Archbishop's House in Drumcondra.

The Archdiocese of Dublin is a Latin Church ecclesiastical territory or archdiocese of the Catholic Church located in the eastern part of Ireland. Its archepiscopal see includes the republic's capital city – Dublin. The cathedral church of the archdiocese is St Mary's Pro-Cathedral. Dublin was formally recognised as a metropolitan province in 1152 by the Synod of Kells. Its second archbishop, Lorcán Ua Tuathail, is also its patron saint.