Catholic Church Catholicism in Ireland is part of the worldwide
Catholic Church. The Catholic Church in Ireland serves Catholics in both the Republic of Ireland and Northern Ireland under the spiritual leadership of
Pope Leo XIV and the Conference of Irish Bishops. In the Republic of Ireland, 87.4% of the citizens were baptised Catholic as
infants while the figure for Northern Ireland is 43.8%. Christianity had arrived in Ireland by the early 5th century, and spread through the works of early missionaries such as
Palladius, and
Saint Patrick. The Church is organised into four provinces; however, these are not coterminous with the modern civil provincial divisions. The church is led by four
archbishops and twenty-three bishops; however, because there have been
amalgamations and absorptions, there are
more than twenty-seven dioceses. For instance, the diocese of
Cashel has been joined with the diocese of
Emly,
Waterford with
Lismore, and
Ardagh with
Clonmacnoise. The bishop of
Galway is also the
Apostolic Administrator of
Kilfenora. There are 1,087 parishes, a few of which are governed by administrators, the remainder by parish priests. There about 3,000 secular clergy—parish priests, administrators,
curates, chaplains, and professors in colleges. There are many
Catholic religious institutes, including
Augustinians,
Capuchins,
Carmelites,
Fathers of the Holy Ghost,
Dominicans,
Franciscans,
Jesuits,
Marists,
Order of Charity,
Oblates,
Passionists,
Redemptorists, and
Vincentians. The total number of the
regular clergy is about 700. They are engaged either in teaching or in giving
missions, but not charged with the government of parishes.
Irish travellers have traditionally adopted a very particular attitude to the Catholic church, with a focus on figures such as "healing priests". More generally a tradition of
visions continues, often outside of Church sanction.
Protestantism The majority of the people of
Northern Ireland are recorded as members of the various
Protestant churches such as the
Presbyterian Church,
Church of Ireland,
Methodist Church and several others. While the Catholic Church is the largest single denomination in either jurisdiction, it is smaller than the combined Protestant denominations in Northern Ireland. In the Republic of Ireland, approximately 3% were recorded as members of various Protestant (1991). The proportion was more than 10% in 1891 – a drop to less than a third of the previous percentage. The percentage in 2011 is almost 5%. In 1861, only the west coast and Kilkenny had less than 6% Protestant population. Dublin and two of the border counties had over 20% Protestant. By 1991, however, all counties had fewer than 6% Protestants, with four having less than 1%. There are no counties in the Republic of Ireland which have experienced a rise in the relative Protestant population over the period 1861 to 1991. The counties which retain the highest proportion of Protestants tend to be those which started off with a large proportion. In Northern Ireland, only counties Londonderry, Tyrone and Armagh have experienced a significant loss of relative Protestant population, though at a lesser rate than in the Republic.
Anglicanism The Church of Ireland is an autonomous province of the
Anglican Communion, operating across the island of Ireland and the largest non-Catholic religious body on the island. Like other
Episcopal churches, it considers itself to be both Catholic, in that its beliefs and practices are based on a continuous tradition dating back to the early Church, and
Reformed, in that it does not accept the
Primacy of the Bishop of Rome. When the church in England broke communion from the Catholic Church, all but two of the bishops of the Church in Ireland followed the Church of England, although almost no clergy or laity did so. The reformed Church in Ireland then became the state church, assuming possession of most church property (and so retaining a great repository of religious architecture and other items, though some were later destroyed). The substantial majority of the population never changed adherence, remaining strongly Catholic, though there were good reasons for joining the state church. Despite its numerical minority, however, the Church of Ireland remained the official state church until it was
disestablished on 1 January 1871 by the
Irish Church Act 1869. Like other Irish churches, the Church of Ireland did not divide when Ireland was
partitioned in the 1920s, and it continues to be governed on an all-Ireland basis. Today the Church of Ireland is, after the Catholic Church, the second-largest Christian church in all of Ireland and the third largest in Northern Ireland after the Catholic and
Presbyterian churches. It is governed by a
synod of clergy and laity and organised into two
ecclesiastical provinces:
Armagh, led by the
Archbishop of Armagh (styled "
Primate of All Ireland"), currently
John McDowell and
Dublin, led by the
Archbishop of Dublin,
Michael Jackson. It has been reported that Irish Catholics are joining the Church of Ireland "in strong numbers." The 16th-century apologist
Richard Hooker posits that there are three sources of authority in Anglicanism: scripture, tradition and reason. It is not known how widely accepted this idea is within Anglicanism. It is further posited that the three sources uphold and critique each other in a dynamic way. In Hooker's model, scripture is the primary means of arriving at doctrine; things stated plainly in scripture are accepted as true. Issues that are ambiguous are determined by tradition, which is checked by reason. This may usefully be contrasted with the teachings of the Catholic and Eastern Orthodox churches which list three sources of authority:
Sacred Scripture,
Sacred Tradition and
Magisterium. Reason is not listed as a source of authority or teaching in these churches. The contemporary Church of Ireland, despite having a number of
High Church (often described as
Anglo-Catholic) parishes, is generally on the
Low Church end of the spectrum of world Anglicanism. Historically, it had little of the difference in churchmanship between parishes characteristic of other Anglican Provinces, although a number of markedly liberal High Church, or
evangelical parishes have developed in recent decades. It was the second province of the Anglican Communion after the
Anglican Church of New Zealand (1857) to adopt, on its 1871 disestablishment,
synodical government, and was one of the first provinces to ordain women to the priesthood (1991). The Church of Ireland has two cathedrals in Dublin: within the walls of the old city is
Christ Church Cathedral, the seat of the Archbishop of Dublin, and just outside the old walls is
St. Patrick's Cathedral, which the church designated as a National Cathedral for Ireland in 1870. Cathedrals also exist in the other dioceses. The church operates a library and seminary, the Church of Ireland Theological College, in
Rathgar, in the south inner suburbs of Dublin. The church's central offices are in
Rathmines, adjacent to the
Church of Ireland College of Education. with the Union Flag flying on the left. The Church in 1999 voted to prohibit the flying of flags other than the
St. Patrick's Flag. However, the Union Flag continues to fly on many churches in Northern Ireland.
Membership The Church of Ireland experienced major decline during the 20th century, both in Northern Ireland, where around 65% of its members live, and in the Republic of Ireland which contains upwards of 35%. However, the Church of Ireland in the Republic has shown substantial growth in the last two national censuses; its membership is now back to the levels of sixty years ago (albeit with fewer churches as many have been closed). Church membership increased by 8.7% in the period 2002–2006, during which the population as a whole increased by only 8.2%. Various reasons for this increase have been proposed. One such theory is the relaxation of the
Ne Temere regulations that stipulated that children of mixed Catholic-Protestant marriages should be brought up as Catholics. It is also partly explained by the number of Anglican immigrants who have moved to Ireland recently. In addition, some parishes, especially in middle-class areas of the larger cities, report significant numbers of Catholics joining the Church of Ireland. A number of clergy originally ordained in the Catholic Church have now become Church of Ireland clergy and many former Catholics also put themselves forward for ordination after they had become members of the Church of Ireland. The 2006 Census in the Republic of Ireland showed that the numbers of people describing themselves as members of the Church of Ireland increased in every county. The highest percentage growth was in the west (Counties Galway, Mayo, and Roscommon) and the largest numerical growth was in the mid-east region (Wicklow, Kildare, and Meath). Co Wicklow is the county with the highest proportion of Church of Ireland members (6.88%);
Greystones Co. Wicklow has the highest proportion of any town (9.77%).
Structure The polity of the Church of Ireland is
Episcopalian church governance, which is the same as other Anglican churches. The Church maintains the traditional structure dating to pre-Reformation times, a system of geographical parishes organised into dioceses. There are
twelve of these, each headed by a bishop. The leader of the five southern bishops is the
Archbishop of Dublin; that of the seven northern bishops is the
Archbishop of Armagh; these are styled
Primate of Ireland and
Primate of All Ireland, respectively, suggesting the ultimate seniority of the latter. Although he has relatively little absolute authority, the Archbishop of Armagh is respected as the Church's general leader and spokesman, and is elected in a process different from those for all other bishops. Canon law and church policy are decided by the Church's General Synod, and changes in policy must be passed by both the House of Bishops and the House of Representatives (Clergy and Laity). Important changes, e.g., the decision to ordain female priests, must be passed by two-thirds majorities. While the House of Representatives always votes publicly, often by orders, the House of Bishops has tended to vote in private, coming to a decision before matters reach the floor of the Synod. This practice has been broken only once, when in 1999 the House of Bishops voted unanimously in public to endorse the efforts of the
Archbishop of Armagh, the Diocese of Armagh, and the Standing Committee of the General Synod of the Church of Ireland in their attempts to resolve the crisis at the Church of the Ascension at
Drumcree, near
Portadown. The Church of Ireland embraces three orders of ministry: deacon, priest (or presbyter), and bishop. These orders are distinct from functional titles such as rector, vicar or canon.
Presbyterianism The
Presbyterian Church in Ireland, operating on an all-Ireland basis, is the largest Presbyterian denomination in Ireland, and the largest Protestant denomination in Northern Ireland. The motto is
Ardens sed Virens – burning but flourishing. The Church has a membership of approximately 300,000 people in 550 congregations across Ireland. About 96% of the membership is in Northern Ireland. It is the second largest church in Northern Ireland, the first being the Catholic Church in the Republic of Ireland the church is the second largest Protestant denomination, after the Church of Ireland. The Presbyterian Church in Ireland is involved in education, evangelism, social service and mission in a number of areas around the world. The
Word of God is central in the Presbyterian Church, along with prayer and praise. The order of service varies from church to church but it generally involves a hymn, followed by a prayer, followed by a children's address and a children's hymn. This is then followed by an expository sermon by the minister and another hymn, then another prayer and a closing hymn. Many Presbyterian churches mix Psalms and formal hymns with choruses, suitable for children, and many churches now have praise bands with a variety of instruments, as well as the traditional organ. The current (2023–24)
moderator is the Right Reverend Dr Sam Mawhinney, minister of Adelaid Road Presbyterian Church, Dublin. The headquarters of the church are at
Church House in
Belfast. Plans to relocate to a new development in May Street have been cancelled. The Presbyterian Church in Ireland, a founding member of the
World Alliance of Reformed Churches, has over 550
congregations in
19 presbyteries across Ireland. The church's two nineteenth century theological colleges,
Magee College (Derry) and Assembly's College (Belfast), merged in 1978 to form
Union Theological College in Belfast. Union offers post-graduate education to the denomination's candidates for the full-time ministry. ;Other Presbyterian denominations in Ireland •
Free Presbyterian Church of Ulster •
Non-subscribing Presbyterian Church of Ireland •
Reformed Presbyterian Church of Ireland •
Evangelical Presbyterian Church Methodism The
Methodist Church in Ireland (MCI) is the largest methodist denomination in Ireland. They operate throughout the island, with 212 individual societies as of May 2025 The church tends to hold views reflecting theological
Conservatism. They support
Evangelism, and, to a degree,
Social justice Evangelical movements Evangelical movements have recently spread both within the established churches and outside them. Similarly,
Celtic Christianity has become increasingly popular within and outside established churches.
Eastern Orthodoxy Self-governing bodies from various traditions of
Eastern Orthodoxy (mainly Greek, Russian, Romanian) have organized in Ireland since the early 20th century.
Oriental Orthodoxy Various self-governing bodies from the traditions of
Oriental Orthodoxy (mainly Indian, Syriac, Coptic) have also organized in Ireland during 20th century.
Religious Society of Friends (Quakers) Quakers first organised themselves in Ireland in 1654 and have 28 congregations with 2000 members. Quakers are organised on an all island basis.
Non-Trinitarian Latter-day Saints The Church of Jesus Christ of Latter-day Saints has 13
congregations and claims more than 2,900 members in the Republic of Ireland. In addition, the church has 11 congregations in Northern Ireland. == Sectarianism in Ireland ==