RootsIreland – data from 34 county genealogy centres on the island of Ireland.
34 Irish Family History Foundation genealogy centres throughout Ireland
Ulster Historical Foundation – “We are a non-profit organisation, founded in 1956, dedicated to helping individuals, groups, educators and global diasporas gain a deeper understanding of the rich history of Ulster and its families” (genealogy centre I have been a long time member of)
FindMyPast – Ireland (paid services)
General Register Office – Ireland (births, stillbirths, adoptions, marriages, civil partnerships and deaths in Ireland)
Irish Family History Society – “The Irish Family History Society (IFHS) is a voluntary non-profit making organisation”
Irish Genealogical Research Society – “Founded in 1936, the Irish Genealogical Research Society is a learned society widely recognised as holding the world’s largest and most important collection of Irish genealogical material in private hands”
IrishGenealogy – civil registrations
Public Record Office of Northern Ireland – the official archive for Northern Ireland.
Ireland Genealogy – FamilySearch
Ireland Online Genealogy Records – FamilySearch
Discover Ulster-Scots – “This website is a hub, with a range of content and links of Ulster-Scots interest”
Linen Hall Library – “The Linen Hall is the oldest library in Belfast”
National Museums Northern Ireland
Mellon Centre for Migration Studies – “comprises three main elements – the Library, the Irish Emigration Database and a teaching and research programme.”
The North of Ireland Family History Society – “promoting and encouraging the private and public study of family history, genealogy, heraldry and local history”
College of Arms – “The College of Arms is the official heraldic authority for England, Wales, Northern Ireland and much of the Commonwealth including Australia and New Zealand.”
Cyndi’s List – comprehensive list of sites.