Eligibility Quiz
Requirements
Core Eligibility
To qualify for Irish citizenship through the grandparent route, you must have at least one grandparent who was born on the island of Ireland. This includes both the Republic of Ireland and Northern Ireland. The critical distinction is that your grandparent must have been born in Ireland—not simply been an Irish citizen by descent themselves. If your grandparent obtained Irish citizenship through their own parent but was not born in Ireland, you cannot claim through them.
Neither of your parents can have been born in Ireland. If either parent was born in Ireland, you are automatically an Irish citizen and do not need to register in the Foreign Births Register—you can apply directly for an Irish passport.
You must have been born outside of Ireland to use this pathway.
Generational Limits
Ireland's citizenship law effectively allows citizenship claims to reach back at most two generations. You can claim through:
- A grandparent born in Ireland ✓ (requires FBR registration)
- A parent who is an Irish citizen (not born in Ireland) ✓ (requires FBR registration)
- A parent born in Ireland ✓ (automatic citizenship, no FBR needed)
You cannot directly claim through a great-grandparent unless your parent (the grandchild of your Irish-born great-grandparent) had already registered in the FBR before you were born.
No Nationality-Specific Eligibility
There are no reduced periods or special provisions based on the applicant's current nationality. The eligibility criteria apply uniformly regardless of whether you are a U.S. citizen, Australian citizen, or any other nationality.
No Residency Requirement
You do not need to live in Ireland to claim citizenship by descent through the grandparent route.
Disqualifiers
There are no explicit disqualifying factors mentioned in official guidance for the grandparent route. However, applications must demonstrate good character and the applicant must not have renounced Irish citizenship.
Conditions & Warnings
Your grandparent must have been born in Ireland—not simply been an Irish citizen by descent. If your grandparent obtained Irish citizenship through their own parent but was not born in Ireland, you cannot claim through them.
You cannot claim directly through a great-grandparent unless your parent (the grandchild of your Irish-born great-grandparent) had already registered in the Foreign Births Register before you were born.
If you have a child before registering in the Foreign Births Register, that child will not be entitled to Irish citizenship. Expectant parents should apply well in advance and can request urgent processing.
All documents must be original state-issued documents; photocopies are not accepted. DNA results (from AncestryDNA, 23andMe, etc.) are not accepted as proof of lineage.
Processing time begins when all supporting documents are received, not when the application is submitted. Incomplete applications delay processing of complete applications.
Qualifications
Fees
€270 registration + certificate fee plus €8 postage and handling. Minors (under 18) pay €153 total (€145 + €8).