National Resources:
- 1901, 1911 Census of Ireland & census remnants
- National Library's Roman Catholic parish collection
- Irish Genealogy: civil registration indexes & some church records
- Griffith's Valuation
- Irish Military Archives
- Irish Manuscripts Commission
- Public Record Office of Northern Ireland
- General Register Office of Northern Ireland
- Representative Church Body Library
- Valuation Office
- Ancestry - commercial subscription site with large collection of Irish records
- Find My Past - commercial subscription site with large collection of Irish records
- Roots Ireland - commercial subscription site with large collection of parish records
County Archives:
The following are the links to each county/administrative division in the Republic of Ireland. Each archive has a wealth of information both on and offline and users should explore the relevant archive's site. Please note that Dublin is divided into four administrative divisions: Dublin City, Dun Laoghaire/Rathdown, Fingal & South County Dublin.- Carlow
- Cavan
- Clare
- Cork City & County Archives
- Dublin Fingal
- Dun Laoghaire/Rathdown
- Dublin City
- South County Dublin
- Donegal
- Galway County Archives
- Kerry
- Kildare
- Kilkenny
- Laois
- Leitrim
- Limerick
- Longford
- Louth
- Mayo
- Meath
- Monaghan
- Offaly
- Roscommon
- Sligo
- Tipperary
- Waterford
- Westmeath
- Wexford County Archives
- Wicklow
Miscellaneous resources:
The following is not intended to be an exhaustive list.- Adoption Authority of Ireland
- Eneclann
- Flyleaf Press
- Guinness Brewery employee archives
- Irish Lives Remembered
- Irish Roots magazine
- Irish Genealogy News - Claire Santry (The most comprehensive Irish genealogy news blog)
- John Grenham's blog & databases
- Sean Murphy's Directory of Irish Genealogy
- Emerald Ancestors
- Failte Romhat (miscellaneous sources)
- Hayes Manuscript SourcesNational Library catalogue of manuscript sources
- Ireland Genealogy Project
- Irish Genealogy Toolkit
- Shane Wilson's databases
- Irish War Memorials
- Landed Estates in Connacht and Munster
- History of workhouses in Uk & Ireland
- Registry of Deeds Index Project
- 1851 Townland Index
- Chief Secretary's Office Registered Papers (1818-1822)
- Bureau of Military History
- In Flanders' Fields:Ireland's Memorial Records (1914-1918)
- Glasnevin cemetery
Church Bodies & Archives
- Anglican Record Project (Church of Ireland)
- Association of Baptist Churches in Ireland
- Catholicireland.net
- Church of Ireland
- Church of Ireland Parish Registers (Complete listing produced by RCB)
- Irish Confraternities
- Irish Jewish Roots
- Methodist Church in Ireland
- Methodist Historical Society of Ireland
- Presbyterian Church in Ireland
- Presbyterian Historical Society of Ireland