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.
Irreligion in the Republic of Ireland
The Humanist Association of Ireland represents the non-religious in Ireland, as well as specifically those who identify as humanists. It received the ability to conduct legal marriages in 2012. As of 2018, it conducts more marriages in Ireland than the Church of Ireland, but still less than the Catholic Church.