The Order of the Knights of St Columbanus
- This order of laymen outlines its history, structures and membership process, and provides news, archives and links, as well as details of the headquarters, Ely House.
- http://www.knightsofstcolumbanus.ie

The Irish Capuchin Franciscans
- The Order's ministries, missions, friaries, events, along with news and a vocations page are presented.
- http://www.irishcapuchins.com/

Diocese of Kilmore
- Straddling the border between the Republic of Ireland and Northern Ireland, this diocese includes almost all of County Cavan, and parts of Counties Leitrim, Fermanagh, Meath and Sligo. History, list of parishes, map.
- http://www.kilmorediocese.ie/

Archdiocese of Armagh
- The senior diocese and province in the Irish church provides history, details of key figures and bodies, ministries and parishes. Both diocese and province traverse the border between Northern Ireland and the Republic of Ireland.
- http://www.armagharchdiocese.org/

Catholic Ireland
- Detailed information on dioceses and parishes, orders, prayer, faith stories, historical material and links.
- http://www.catholicireland.net/

Conference of Diocesan Vocations Directors
- Information about a variety of vocations in the Catholic Church including priesthood, diaconate, religious life, missionary life, and lay movements.
- http://www.vocations.ie/

The Catholic Communications Office
- An agency of the Irish Bishops' Conference. Provides material on and links to structures and hierarchy, calendar, news, pastoral communications and statistics.
- http://www.catholiccommunications.ie/

The Society of St Vincent de Paul
- Details of the work carried out by this organisation, a member of the Vincentian Family, and of its history, how to help as a donor or volunteer and contact details.
- http://www.svp.ie/

Franciscan Province of Ireland
- Information on St Francis, the history, work and locations of this brotherhood in Ireland and Northern Ireland and vocations.
- http://www.franciscans.ie/

Roman Catholic Diocese of Down and Connor
- Provides information on parishes and schools within the diocese. Also includes press releases and calendar.
- http://www.downandconnor.org/

Catholic Diocese of Clogher
- Information about this Roman Catholic Diocese which spans parts of five counties, a map of its parishes, and information on its Bishop, clergy and other staff, its history, its cathedral and its teachings.
- http://www.clogherdiocese.ie/