DNA testing has transformed Irish genealogy. With so many Irish records lost in the 1922 Public Record Office fire, DNA is often the only way to confirm family connections, break through brick walls, and find living relatives in Ireland who hold the photographs, letters, and family knowledge the archives never had.
This page is the hub for every DNA guide on Irish Roots Project.
Comparisons
- Best DNA Test for Irish Ancestry (2026): All Four Services Compared
- AncestryDNA vs MyHeritage DNA for Irish Ancestry
Guides
Not sure where to start? Begin with the full comparison — it covers which service has the largest Irish user base, which is best for finding relatives still in Ireland, and which fits your research goals.