Religion in the Republic of Ireland
The predominant religion in the Republic of Ireland is Christianity, with the largest church being the Roman Catholic Church. The Irish constitution says that the state may not endorse any particular religion and guarantees freedom of religion.
Eastern Orthodoxy in the Republic of Ireland
Orthodox Christianity in Ireland () consists of parishes belonging to several self-governing ecclesiastical bodies, primarily the Russian Orthodox Church, the Ecumenical Patriarchate, and the Romanian Orthodox Church.