Birthactive
Citizenship by birth on the island of Ireland
For births from 2005, citizenship depends on a parent’s citizenship, entitlement, or qualifying residence before the birth.
Sources: Irish Nationality and Citizenship Act 2004 — Section 4
Citizenship routes
Ancestryreviewed
Naturalizationreviewed
Birthreviewed
Investmentreviewed
Ancestryactive
Citizenship through an Irish parent or grandparent
Citizenship may be automatic through an Irish-born parent or available through Foreign Birth Registration in specified overseas cases.
Naturalizationactive
Naturalization as a spouse or civil partner of an Irish citizen
A spouse or civil partner of an Irish citizen may naturalize with three years of reckonable residence on the island of Ireland and three years of marriage or civil partnership, including twelve months continuous residence before applying.
Sources: Irish Immigration Service — How to become an Irish citizen
Naturalizationactive
Naturalization based on Irish associations (discretionary)
The Minister may waive naturalization conditions, including residence, for a person of "Irish associations" — related by blood, affinity or adoption to an Irish citizen — the route relevant to great-grandparent and remoter ancestry outside the Foreign Births Register entitlement.
Sources: Irish Immigration Service — How to become an Irish citizen
Naturalizationactive
Naturalization after reckonable residence
The standard adult route requires five years of reckonable residence in the previous nine, including one continuous year immediately before applying.
Sources: Irish Immigration Service — How to become an Irish citizen
Naturalizationactive
Resumption of renounced Irish citizenship
A person who renounced Irish citizenship may resume it, generally only where they were born on the island of Ireland, by declaration.
Sources: Irish Immigration Service — How to become an Irish citizen