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.
Church of Scientology
As in most European countries, the Church of Scientology is not officially recognized in Ireland as a charitable organization, but it is free to promote Scientology beliefs. The Irish government has not invited the Church of Scientology to national discussions on secularization by the Religious Council of Ireland. The meetings were attended by Roman Catholic bishops, representatives of the Church of Ireland, Ireland's Chief Rabbi, and Muslim leaders.