Irish citizenship by descent: who qualifies, the law, and what it takes

Q: Can you claim Irish citizenship through a parent?

Likely. A child of a parent born in Ireland is an Irish citizen from birth. You may only need to apply for the passport.

Q: Can you claim Irish citizenship through a grandparent?

Likely. With a grandparent born in Ireland, you can register on the Foreign Births Register and become an Irish citizen from the date of registration.

Q: Can you claim Irish citizenship through a great-grandparent?

Possible. Beyond a grandparent, each generation must have registered on the Foreign Births Register before the next was born. You qualify only if your parent registered before your birth. If your parent was already registered as a citizen when you were born: likely. If your parent was not yet registered when you were born: unlikely.

Through a parentLIKELYCitizen by birth Through a grandparentLIKELYForeign Births Register Through a great-grandparentPOSSIBLEForeign Births Register

Ways to apply: Citizen by birth · Foreign Births Register
Dual citizenship: Kept, however you apply
Comes with: EU citizenship: the right to live and work in 27 countries

Each answer assumes none of your ancestors became a citizen of another country before their child was born. Below is what changes each answer.

On this page

01Who qualifies
02Dates that matter
03Through your mother
04Keeping your citizenship
05Ways to apply
06The documents
07What it takes
08Where the records live
09Places that changed countries
10Law changes
11Other options
12Sources

Who qualifies, generation by generation

LIKELY

Can you claim Irish citizenship through a parent?

Citizen by birth

A child of a parent born in Ireland is an Irish citizen from birth. You may only need to apply for the passport.

A person born outside Ireland to a parent who was an Irish citizen at the time of the birth is an Irish citizen. Irish Nationality and Citizenship Act 1956, as amended, s.7(1)
A parent born on the island of Ireland is, with narrow exceptions, an Irish citizen. Irish Nationality and Citizenship Act 1956, as amended, s.6

LIKELY

Can you claim Irish citizenship through a grandparent?

Foreign Births Register

With a grandparent born in Ireland, you can register on the Foreign Births Register and become an Irish citizen from the date of registration.

A person whose grandparent was born in Ireland may register on the Foreign Births Register and is an Irish citizen from registration. Irish Nationality and Citizenship Act 1956, as amended, s.27 and s.7(2)
Registration does not depend on when your parent was born or whether anyone naturalized elsewhere. Applications are processed centrally in Dublin; expect nine to twelve months. Foreign Births Register, Department of Foreign Affairs

POSSIBLE

Can you claim Irish citizenship through a great-grandparent?

Foreign Births Register

Beyond a grandparent, each generation must have registered on the Foreign Births Register before the next was born. You qualify only if your parent registered before your birth.

What would settle itWhether your parent registered on the Foreign Births Register before you were born. If not, your parent can register now and their future children would qualify, but you would not.

Citizenship through the Foreign Births Register passes to a child only if the parent registered before the child’s birth. Irish Nationality and Citizenship Act 1956, as amended, s.7(3)

What changes the answer

LIKELY
If your parent was already registered as a citizen when you were born
Your parent was already on the Foreign Births Register when you were born, so they were an Irish citizen at your birth and you can register in turn.
UNLIKELY
If your parent was not yet registered when you were born
Your parent was not yet on the Foreign Births Register when you were born, and registration is not retroactive, so it does not reach you. A registration still pending at your birth does not count.

The dates that matter

1986
1 July 1986
A parent registered after 1 July 1986 is a citizen from the date of registration, so a registration entered before your birth (or any registration before 1 July 1986) made your parent Irish when you were born. Irish Nationality and Citizenship Act 1956, as amended, s.7(3), proviso
1986
1 July 1986
The Irish citizenship of a person registered after 1 July 1986 commences only from the date of registration; a parent registered, or still waiting, after your birth was not an Irish citizen when you were born. Irish Nationality and Citizenship Act 1956, as amended, s.7(3), proviso

Claiming through your mother or grandmother

Ireland’s rule gives the same answer whether the line runs through a mother or a father.

Dual citizenship with your home country

You keep your citizenship.

On every open route, the rule lets a citizen of the United States, Canada, the United Kingdom, Australia, New Zealand, Brazil, Argentina or South Africa keep that citizenship.

Irish law does not require a citizen to give up another citizenship; Ireland permits dual citizenship. Foreign Births Register, Department of Foreign Affairs

Every way to apply, and the law behind it

Citizen by birth

Open to you through a parent

LIKELY
Through a parent

The law

A person born outside Ireland to a parent who was an Irish citizen at the time of the birth is an Irish citizen. Irish Nationality and Citizenship Act 1956, as amended, s.7(1)
A parent born on the island of Ireland is, with narrow exceptions, an Irish citizen. Irish Nationality and Citizenship Act 1956, as amended, s.6

Foreign Births Register

Open to you through a grandparent or a great-grandparent

LIKELY
Through a grandparent
POSSIBLE
Through a great-grandparent
LIKELY
Through a great-grandparent, if your parent was already registered as a citizen when you were born

The law

A person whose grandparent was born in Ireland may register on the Foreign Births Register and is an Irish citizen from registration. Irish Nationality and Citizenship Act 1956, as amended, s.27 and s.7(2)
Registration does not depend on when your parent was born or whether anyone naturalized elsewhere. Applications are processed centrally in Dublin; expect nine to twelve months. Foreign Births Register, Department of Foreign Affairs
Citizenship through the Foreign Births Register passes to a child only if the parent registered before the child’s birth. Irish Nationality and Citizenship Act 1956, as amended, s.7(3)
A person is an Irish citizen from birth if at the time of the birth either parent was an Irish citizen; where that parent was also born abroad, the person’s own birth must be registered. Irish Nationality and Citizenship Act 1956, as amended, s.7(1) and s.7(3)(a)
A parent registered after 1 July 1986 is a citizen from the date of registration, so a registration entered before your birth (or any registration before 1 July 1986) made your parent Irish when you were born. Irish Nationality and Citizenship Act 1956, as amended, s.7(3), proviso
The Irish citizenship of a person registered after 1 July 1986 commences only from the date of registration; a parent registered, or still waiting, after your birth was not an Irish citizen when you were born. Irish Nationality and Citizenship Act 1956, as amended, s.7(3), proviso
Citizenship passes at birth only from a parent who was an Irish citizen at that time. Irish Nationality and Citizenship Act 1956, as amended, s.7(1)

What would settle an unsure case

Whether your parent registered on the Foreign Births Register before you were born. If not, your parent can register now and their future children would qualify, but you would not.
The date on your parent’s Foreign Births Register certificate against your birth date; if your parent registered before 1 July 1986, it counts whenever it was made. Your parent can register now so that any children born afterwards qualify.

The documents, as the rule lists them

Citizen by birth

Through a parent

Your parent’s Irish birth certificate
Your birth certificate showing that parent
Photo ID

Foreign Births Register

Through a grandparent

Your grandparent’s Irish civil birth certificate
Your grandparent’s marriage certificate
Your parent’s birth certificate (showing the Irish-born grandparent)
Your parent’s marriage certificate, if applicable
Your birth certificate and photo ID
Four passport photos and the application form witnessed by a qualified witness

Through a great-grandparent

Your parent’s Foreign Births Register certificate, dated before your birth
Your birth certificate

Through a great-grandparent, if your parent was already registered as a citizen when you were born

Your parent’s Foreign Births Register certificate, dated before your birth
Your Irish-born great-grandparent’s birth certificate and the birth and marriage certificates
Your birth certificate and photo ID

Most countries also want proof that your ancestor didn’t become a citizen somewhere else before their child was born: the naturalization record with its date, or a letter saying there isn’t one.

What it takes: time, cost, the hard part, who decides

Citizen by birth

Time: 4–8 weeks for a first passport once the documents are in hand.
Cost: About $120: the passport fee and certified copies.
The hard part: None, really. You are already Irish; this is a passport application.
Who decides: Passport Online, Department of Foreign Affairs.
The first record: Your parent’s Irish birth certificate, from The General Register Office. Search the index, then order the certified copy (€20). irishgenealogy.ie

Nothing to apply for. A child born abroad to a parent born on the island of Ireland is an Irish citizen from birth (1956 Act s.6, s.7); DFA says there is nothing to apply for. The claim goes straight to a first passport through Passport Online (€75 + €15 overseas postage; DFA’s average is 20 working days from when the documents arrive). Post the originals: identity verification form, the member’s long-form civil birth certificate, the Irish-born parent’s full civil birth certificate showing their parents (baptismal and laminated certificates are refused), a certified copy of a passport or driver’s license, one proof of name and one proof of address dated within 12 months, and a marriage certificate if the parent’s or member’s name changed.

Foreign Births Register

Time: 9–14 months for the register entry, then 4–8 weeks for the passport.
Cost: About $600: the €278 registration fee, certified copies, and the passport fee.
The hard part: Getting your grandparent’s Irish birth certificate. Everything else is U.S. paperwork.
Who decides: The Department of Foreign Affairs, online, then documents by post to Dublin.
The first record: Your grandparent’s Irish birth certificate, from The General Register Office, via civilrecords.irishgenealogy.ie. Search the free index by name and county, note the year and district, then order the certified copy (€20) from the General Register Office. irishgenealogy.ie

How it’s filed

Where: Foreign Births Registration, Department of Foreign Affairs: apply and pay online at fbr.dfa.ie, then post the signed, witnessed form with the originals to the address printed on it. There is no consulate step. office list
How: Online; no appearance needed
Form: Foreign Birth Registration online application (online only; print the completed form to sign and have witnessed)
Fee: About $316
Decision: 10–16 months
Your records: No apostille, no translation. Original civil certificates; the document list asks for no apostille, and English records need no translation.
Sign: Someone who knows you personally, is not a relative, and practises as a police officer, teacher, member of the clergy, doctor, nurse, pharmacist, dentist, lawyer, notary, bank or credit-union manager, accountant, elected representative, vet or chartered engineer.

What goes in the file (12)

Printed application form, signed and witnessed (witness stamps the form; business card if no stamp)
Applicant’s original civil birth certificate showing parents
Applicant’s original civil marriage certificate or change-of-name document, if applicable
Photocopy of the applicant’s current passport or driver’s license, certified as a true copy by the witness
Two separate original proofs of address
Four colour passport photos, two signed and dated by the witness (loose, not attached)
Parent’s original civil birth certificate showing parents
Parent’s original civil marriage certificate or change-of-name document, if applicable
Parent’s photo ID copy certified by a professional from the witness list, or the parent’s original civil death certificate
Irish-born grandparent’s original civil birth certificate (baptismal certificate if born before 1864)
Grandparent’s original civil marriage certificate or change-of-name document, if applicable
Grandparent’s photo ID copy certified by a listed professional, or the grandparent’s original civil death certificate

What goes wrong (9)

Fee €278 for adults (€270 registration and certificate + €8 postage and handling), €153 under 18; paid online when submitting.
Witness: someone who has known the applicant personally, not a relative, currently practising as a police officer, teacher, clergy, doctor, nurse, pharmacist, dentist, lawyer, notary or commissioner for oaths, bank or credit-union manager, accountant, elected representative, vet or chartered engineer (DFA list). The same witness signs the form and two photos and certifies the ID copy.
Originals are required and all are returned by recorded mail at the end. No apostille is needed on U.S. certificates. Send by tracked post: DFA does not acknowledge receipt.
Processed in strict date order; DFA says about 12 months as of September 2026. Incomplete applications are returned unprocessed. Expectant parents should mark the application: a child born before the parent is registered cannot register.
A great-grandchild qualifies only if the parent was entered on the register before the applicant’s birth; the parent’s original FBR certificate replaces the grandparent documents.
Siblings resident in the same country can share one set of supporting documents: send two applications in one envelope with a covering letter.
Do not put a passport application in the same envelope; it is a different office and everything will be returned.
From CA, GB, AU, NZ, BR, AR, ZA: identical process and fee; everything goes to Dublin. Records in Portuguese or Spanish need a certified translation.
No proof of non-naturalization is asked for: Irish citizenship by birth on the island is not lost by a parent’s or grandparent’s later foreign naturalisation, so the FBR document list does not ask for it, only that the parent’s own citizenship route (birth, FBR, or naturalisation) predates the applicant’s birth.

source ↗

Fees are each office’s published fee, converted to U.S. dollars.

Where each record lives, and how to ask for it

birth1864–2026
The General Register Office (civil registration). Certificates are issued by the HSE Civil Registration Service; any office issues for any registered birth.
Search the free index by name, year and registration district; the index gives the district and the register image confirms the parents. Births in Northern Ireland from 1922 are held by GRONI (next entry).
Ask
Online, in English · request page ↗
Search
IrishGenealogy.ie civil records (Department of Culture): birth register images 1864–1924 under the 100-year rule
Fee
25 EUR (about $28)
Takes
1–5 weeks
Good to know (4)
- €20 for the full standard (long-form) certificate plus €5 postage to the rest of the world. Order the full certificate showing parents’ details; the €5 uncertified research copy is refused by the FBR.
- A direct descendant may order the ancestor’s certificate themselves; no relationship check is made when ordering online.
- Republic of Ireland births 1864 to present; Northern Ireland births 1864–1921 only.
- Phone orders from most civil registration offices take about 5 working days, plus airmail.
source ↗
birth1740–1863
The Catholic parish (baptismal register), or the Church of Ireland parish. Grandparents born before civil registration began in 1864 prove birth with a baptismal certificate, which the Department of Foreign Affairs accepts.
The parish the family came from; most Catholic registers start in the 1820s. Church of Ireland registers: many were destroyed in 1922 at the Public Record Office, so check survival first.
Ask
By post, in English
Search
National Library of Ireland, Catholic Parish Registers (images to 1880, not indexed: browse by parish)
Takes
3–17 weeks
Good to know (2)
- Rare in practice: a grandparent born before 1864 implies an applicant born before about 1930.
- Most parishes take requests by email or an online form and charge €5–10 a certificate (Halston Street, Dublin: €5 donation; Raheny: €10, posted). The Dublin archdiocese sends requests for baptisms before 1950 to its diocesan archives (archives@dublindiocese.ie).
source ↗
birth1922–2026
General Register Office for Northern Ireland (GRONI), for births in Northern Ireland. A grandparent born anywhere on the island of Ireland qualifies for the FBR.
GRONI online search (free account) by name and year.
Ask
Online, in English · request page ↗
Search
GRONI online records (free registration required)
Fee
15 GBP (about $20)
Takes
1–4 weeks
Good to know (2)
- £15 per certificate (includes a £7 search fee kept if nothing is found), plus £1.20–£3.43 airmail to the rest of the world. GRONI aims to issue in five working days.
- GRONI holds Northern Ireland births from 1864; for 1864–1921 the GRO in Dublin also issues them.
source ↗
marriage1845–2026
The General Register Office via the HSE Civil Registration Service (non-Catholic marriages from 1845, all marriages from 1864). Northern Ireland marriages after 1921: GRONI, £15.
Ask
Online, in English · request page ↗
Search
IrishGenealogy.ie civil records: marriage register images 1845–1949 under the 75-year rule
Fee
25 EUR (about $28)
Takes
1–5 weeks
Good to know (1)
- €20 plus €5 international postage. Needed only if the grandparent married in Ireland; a U.S. marriage comes from the county or state.
source ↗
death1864–2026
The General Register Office via the HSE Civil Registration Service, when the grandparent died in Ireland; otherwise the U.S. state or county where they died.
Ask
Online, in English · request page ↗
Search
IrishGenealogy.ie civil records: death register images 1871–1974 under the 50-year rule
Fee
25 EUR (about $28)
Takes
1–5 weeks
Good to know (1)
- The FBR takes a deceased grandparent’s or parent’s original civil death certificate in place of a certified copy of their photo ID.
source ↗

Translations

Into: English
Who may translate: Any certified translator
About: $25–$75 a page

English-language records need no translation and no apostille. A record in another language needs a certified translation. DFA’s definition: the translator, a solicitor, notary, commissioner for oaths or the issuing body writes ‘Certified to be a true copy/translation of the original seen by me’, signs, dates, prints name, occupation, address and phone, and adds a stamp or register number.

source ↗

The passport

Where: Passport Online, Department of Foreign Affairs (first-time adult application from abroad; supporting documents, including the FBR certificate or the parent’s Irish birth certificate, go by post to the Passport Service in Dublin).
Fee: About $102
Time: 4–11 weeks

source ↗

Places on old papers that lead to Ireland

If your family’s records name one of these, Ireland’s law may be the one that applies. The town decides.

Ireland (before 1922) · also Ulster, Northern Ireland
Northern Ireland is the UK; Irish law still counts anyone born on the island.
Today: Ireland, United Kingdom

Recent and pending changes

NO CHANGE
The 2026 citizenship bill leaves descent alone21 September 2026
The Government approved the General Scheme of the Irish Nationality and Citizenship (Amendment) Bill 2026 on 9 September and published it on 21 September. It changes naturalisation only: eight years’ residence instead of five for most applicants, language and civics tests, and a self-sufficiency test. It does not amend citizenship through an Irish parent or grandparent, or the Foreign Births Register. It goes next to the Joint Committee on Justice for pre-legislative scrutiny.
Department of Justice, Home Affairs and Migration: General Scheme of the Irish Nationality and Citizenship (Amendment) Bill 2026 (21 September 2026)Department of Justice, Home Affairs and Migration, 9 September 2026: Government approval for priority drafting of the bill

We re-read the official pages behind this guide every day. When one changes, a person checks the rule before we update anything here.

If descent doesn’t reach you

One residence program leads to Ireland without an ancestor, each with its own law and road to citizenship.

RetirementStamp 0 (person of independent means)
Ireland will let a family with roughly $55,000 a year in pension, savings, or investment income live there without working, so long as none of it comes from an Irish job.

Every source on this page

2 laws and official pages behind the answers, then the offices and pages behind the records and filing, then the bills and rulings we follow.

Not legal advice. Every answer comes from the country’s own laws and is tested against real cases. Where the law isn’t clear, we say “possible” rather than guess.

Through a parentLIKELYCitizen by birth Through a grandparentLIKELYForeign Births Register Through a great-grandparentPOSSIBLEForeign Births Register

Ways to apply: Citizen by birth · Foreign Births Register
Dual citizenship: Kept, however you apply
Comes with: EU citizenship: the right to live and work in 27 countries

Each answer assumes none of your ancestors became a citizen of another country before their child was born. Below is what changes each answer.

On this page

01Who qualifies
02Dates that matter
03Through your mother
04Keeping your citizenship
05Ways to apply
06The documents
07What it takes
08Where the records live
09Places that changed countries
10Law changes
11Other options
12Sources

Who qualifies, generation by generation

LIKELY

Can you claim Irish citizenship through a parent?

Citizen by birth

A child of a parent born in Ireland is an Irish citizen from birth. You may only need to apply for the passport.

A person born outside Ireland to a parent who was an Irish citizen at the time of the birth is an Irish citizen. Irish Nationality and Citizenship Act 1956, as amended, s.7(1)
A parent born on the island of Ireland is, with narrow exceptions, an Irish citizen. Irish Nationality and Citizenship Act 1956, as amended, s.6

LIKELY

Can you claim Irish citizenship through a grandparent?

Foreign Births Register

With a grandparent born in Ireland, you can register on the Foreign Births Register and become an Irish citizen from the date of registration.

A person whose grandparent was born in Ireland may register on the Foreign Births Register and is an Irish citizen from registration. Irish Nationality and Citizenship Act 1956, as amended, s.27 and s.7(2)
Registration does not depend on when your parent was born or whether anyone naturalized elsewhere. Applications are processed centrally in Dublin; expect nine to twelve months. Foreign Births Register, Department of Foreign Affairs

POSSIBLE

Can you claim Irish citizenship through a great-grandparent?

Foreign Births Register

Beyond a grandparent, each generation must have registered on the Foreign Births Register before the next was born. You qualify only if your parent registered before your birth.

Citizenship through the Foreign Births Register passes to a child only if the parent registered before the child’s birth. Irish Nationality and Citizenship Act 1956, as amended, s.7(3)

What changes the answer

LIKELY
If your parent was already registered as a citizen when you were born
Your parent was already on the Foreign Births Register when you were born, so they were an Irish citizen at your birth and you can register in turn.
UNLIKELY
If your parent was not yet registered when you were born
Your parent was not yet on the Foreign Births Register when you were born, and registration is not retroactive, so it does not reach you. A registration still pending at your birth does not count.

The dates that matter

1986
1 July 1986
A parent registered after 1 July 1986 is a citizen from the date of registration, so a registration entered before your birth (or any registration before 1 July 1986) made your parent Irish when you were born. Irish Nationality and Citizenship Act 1956, as amended, s.7(3), proviso
1986
1 July 1986
The Irish citizenship of a person registered after 1 July 1986 commences only from the date of registration; a parent registered, or still waiting, after your birth was not an Irish citizen when you were born. Irish Nationality and Citizenship Act 1956, as amended, s.7(3), proviso

Claiming through your mother or grandmother

Ireland’s rule gives the same answer whether the line runs through a mother or a father.

Dual citizenship with your home country

You keep your citizenship.

On every open route, the rule lets a citizen of the United States, Canada, the United Kingdom, Australia, New Zealand, Brazil, Argentina or South Africa keep that citizenship.

Irish law does not require a citizen to give up another citizenship; Ireland permits dual citizenship. Foreign Births Register, Department of Foreign Affairs

Every way to apply, and the law behind it

Citizen by birth

Open to you through a parent

LIKELY
Through a parent

The law

A person born outside Ireland to a parent who was an Irish citizen at the time of the birth is an Irish citizen. Irish Nationality and Citizenship Act 1956, as amended, s.7(1)
A parent born on the island of Ireland is, with narrow exceptions, an Irish citizen. Irish Nationality and Citizenship Act 1956, as amended, s.6

Foreign Births Register

Open to you through a grandparent or a great-grandparent

LIKELY
Through a grandparent
POSSIBLE
Through a great-grandparent
LIKELY
Through a great-grandparent, if your parent was already registered as a citizen when you were born

The law

A person whose grandparent was born in Ireland may register on the Foreign Births Register and is an Irish citizen from registration. Irish Nationality and Citizenship Act 1956, as amended, s.27 and s.7(2)
Registration does not depend on when your parent was born or whether anyone naturalized elsewhere. Applications are processed centrally in Dublin; expect nine to twelve months. Foreign Births Register, Department of Foreign Affairs
Citizenship through the Foreign Births Register passes to a child only if the parent registered before the child’s birth. Irish Nationality and Citizenship Act 1956, as amended, s.7(3)
A person is an Irish citizen from birth if at the time of the birth either parent was an Irish citizen; where that parent was also born abroad, the person’s own birth must be registered. Irish Nationality and Citizenship Act 1956, as amended, s.7(1) and s.7(3)(a)
A parent registered after 1 July 1986 is a citizen from the date of registration, so a registration entered before your birth (or any registration before 1 July 1986) made your parent Irish when you were born. Irish Nationality and Citizenship Act 1956, as amended, s.7(3), proviso
The Irish citizenship of a person registered after 1 July 1986 commences only from the date of registration; a parent registered, or still waiting, after your birth was not an Irish citizen when you were born. Irish Nationality and Citizenship Act 1956, as amended, s.7(3), proviso
Citizenship passes at birth only from a parent who was an Irish citizen at that time. Irish Nationality and Citizenship Act 1956, as amended, s.7(1)

What would settle an unsure case

Whether your parent registered on the Foreign Births Register before you were born. If not, your parent can register now and their future children would qualify, but you would not.
The date on your parent’s Foreign Births Register certificate against your birth date; if your parent registered before 1 July 1986, it counts whenever it was made. Your parent can register now so that any children born afterwards qualify.

The documents, as the rule lists them

Citizen by birth

Through a parent

Your parent’s Irish birth certificate
Your birth certificate showing that parent
Photo ID

Foreign Births Register

Through a grandparent

Your grandparent’s Irish civil birth certificate
Your grandparent’s marriage certificate
Your parent’s birth certificate (showing the Irish-born grandparent)
Your parent’s marriage certificate, if applicable
Your birth certificate and photo ID
Four passport photos and the application form witnessed by a qualified witness

Through a great-grandparent

Your parent’s Foreign Births Register certificate, dated before your birth
Your birth certificate

Through a great-grandparent, if your parent was already registered as a citizen when you were born

Your parent’s Foreign Births Register certificate, dated before your birth
Your Irish-born great-grandparent’s birth certificate and the birth and marriage certificates
Your birth certificate and photo ID

Most countries also want proof that your ancestor didn’t become a citizen somewhere else before their child was born: the naturalization record with its date, or a letter saying there isn’t one.

What it takes: time, cost, the hard part, who decides

Citizen by birth

Time: 4–8 weeks for a first passport once the documents are in hand.
Cost: About $120: the passport fee and certified copies.
The hard part: None, really. You are already Irish; this is a passport application.
Who decides: Passport Online, Department of Foreign Affairs.
The first record: Your parent’s Irish birth certificate, from The General Register Office. Search the index, then order the certified copy (€20). irishgenealogy.ie

Foreign Births Register

Time: 9–14 months for the register entry, then 4–8 weeks for the passport.
Cost: About $600: the €278 registration fee, certified copies, and the passport fee.
The hard part: Getting your grandparent’s Irish birth certificate. Everything else is U.S. paperwork.
Who decides: The Department of Foreign Affairs, online, then documents by post to Dublin.
The first record: Your grandparent’s Irish birth certificate, from The General Register Office, via civilrecords.irishgenealogy.ie. Search the free index by name and county, note the year and district, then order the certified copy (€20) from the General Register Office. irishgenealogy.ie

How it’s filed

Where: Foreign Births Registration, Department of Foreign Affairs: apply and pay online at fbr.dfa.ie, then post the signed, witnessed form with the originals to the address printed on it. There is no consulate step. office list
How: Online; no appearance needed
Form: Foreign Birth Registration online application (online only; print the completed form to sign and have witnessed)
Fee: About $316
Decision: 10–16 months
Your records: No apostille, no translation. Original civil certificates; the document list asks for no apostille, and English records need no translation.
Sign: Someone who knows you personally, is not a relative, and practises as a police officer, teacher, member of the clergy, doctor, nurse, pharmacist, dentist, lawyer, notary, bank or credit-union manager, accountant, elected representative, vet or chartered engineer.

What goes in the file (12)

Printed application form, signed and witnessed (witness stamps the form; business card if no stamp)
Applicant’s original civil birth certificate showing parents
Applicant’s original civil marriage certificate or change-of-name document, if applicable
Photocopy of the applicant’s current passport or driver’s license, certified as a true copy by the witness
Two separate original proofs of address
Four colour passport photos, two signed and dated by the witness (loose, not attached)
Parent’s original civil birth certificate showing parents
Parent’s original civil marriage certificate or change-of-name document, if applicable
Parent’s photo ID copy certified by a professional from the witness list, or the parent’s original civil death certificate
Irish-born grandparent’s original civil birth certificate (baptismal certificate if born before 1864)
Grandparent’s original civil marriage certificate or change-of-name document, if applicable
Grandparent’s photo ID copy certified by a listed professional, or the grandparent’s original civil death certificate

What goes wrong (9)

Fee €278 for adults (€270 registration and certificate + €8 postage and handling), €153 under 18; paid online when submitting.
Witness: someone who has known the applicant personally, not a relative, currently practising as a police officer, teacher, clergy, doctor, nurse, pharmacist, dentist, lawyer, notary or commissioner for oaths, bank or credit-union manager, accountant, elected representative, vet or chartered engineer (DFA list). The same witness signs the form and two photos and certifies the ID copy.
Originals are required and all are returned by recorded mail at the end. No apostille is needed on U.S. certificates. Send by tracked post: DFA does not acknowledge receipt.
Processed in strict date order; DFA says about 12 months as of September 2026. Incomplete applications are returned unprocessed. Expectant parents should mark the application: a child born before the parent is registered cannot register.
A great-grandchild qualifies only if the parent was entered on the register before the applicant’s birth; the parent’s original FBR certificate replaces the grandparent documents.
Siblings resident in the same country can share one set of supporting documents: send two applications in one envelope with a covering letter.
Do not put a passport application in the same envelope; it is a different office and everything will be returned.
From CA, GB, AU, NZ, BR, AR, ZA: identical process and fee; everything goes to Dublin. Records in Portuguese or Spanish need a certified translation.
No proof of non-naturalization is asked for: Irish citizenship by birth on the island is not lost by a parent’s or grandparent’s later foreign naturalisation, so the FBR document list does not ask for it, only that the parent’s own citizenship route (birth, FBR, or naturalisation) predates the applicant’s birth.

source ↗

Fees are each office’s published fee, converted to U.S. dollars.

Where each record lives, and how to ask for it

birth1864–2026
The General Register Office (civil registration). Certificates are issued by the HSE Civil Registration Service; any office issues for any registered birth.
Search the free index by name, year and registration district; the index gives the district and the register image confirms the parents. Births in Northern Ireland from 1922 are held by GRONI (next entry).
Ask
Online, in English · request page ↗
Search
IrishGenealogy.ie civil records (Department of Culture): birth register images 1864–1924 under the 100-year rule
Fee
25 EUR (about $28)
Takes
1–5 weeks
Good to know (4)
- €20 for the full standard (long-form) certificate plus €5 postage to the rest of the world. Order the full certificate showing parents’ details; the €5 uncertified research copy is refused by the FBR.
- A direct descendant may order the ancestor’s certificate themselves; no relationship check is made when ordering online.
- Republic of Ireland births 1864 to present; Northern Ireland births 1864–1921 only.
- Phone orders from most civil registration offices take about 5 working days, plus airmail.
source ↗
birth1740–1863
The Catholic parish (baptismal register), or the Church of Ireland parish. Grandparents born before civil registration began in 1864 prove birth with a baptismal certificate, which the Department of Foreign Affairs accepts.
The parish the family came from; most Catholic registers start in the 1820s. Church of Ireland registers: many were destroyed in 1922 at the Public Record Office, so check survival first.
Ask
By post, in English
Search
National Library of Ireland, Catholic Parish Registers (images to 1880, not indexed: browse by parish)
Takes
3–17 weeks
Good to know (2)
- Rare in practice: a grandparent born before 1864 implies an applicant born before about 1930.
- Most parishes take requests by email or an online form and charge €5–10 a certificate (Halston Street, Dublin: €5 donation; Raheny: €10, posted). The Dublin archdiocese sends requests for baptisms before 1950 to its diocesan archives (archives@dublindiocese.ie).
source ↗
birth1922–2026
General Register Office for Northern Ireland (GRONI), for births in Northern Ireland. A grandparent born anywhere on the island of Ireland qualifies for the FBR.
GRONI online search (free account) by name and year.
Ask
Online, in English · request page ↗
Search
GRONI online records (free registration required)
Fee
15 GBP (about $20)
Takes
1–4 weeks
Good to know (2)
- £15 per certificate (includes a £7 search fee kept if nothing is found), plus £1.20–£3.43 airmail to the rest of the world. GRONI aims to issue in five working days.
- GRONI holds Northern Ireland births from 1864; for 1864–1921 the GRO in Dublin also issues them.
source ↗
marriage1845–2026
The General Register Office via the HSE Civil Registration Service (non-Catholic marriages from 1845, all marriages from 1864). Northern Ireland marriages after 1921: GRONI, £15.
Ask
Online, in English · request page ↗
Search
IrishGenealogy.ie civil records: marriage register images 1845–1949 under the 75-year rule
Fee
25 EUR (about $28)
Takes
1–5 weeks
Good to know (1)
- €20 plus €5 international postage. Needed only if the grandparent married in Ireland; a U.S. marriage comes from the county or state.
source ↗
death1864–2026
The General Register Office via the HSE Civil Registration Service, when the grandparent died in Ireland; otherwise the U.S. state or county where they died.
Ask
Online, in English · request page ↗
Search
IrishGenealogy.ie civil records: death register images 1871–1974 under the 50-year rule
Fee
25 EUR (about $28)
Takes
1–5 weeks
Good to know (1)
- The FBR takes a deceased grandparent’s or parent’s original civil death certificate in place of a certified copy of their photo ID.
source ↗

Translations

Into: English
Who may translate: Any certified translator
About: $25–$75 a page

source ↗

The passport

Where: Passport Online, Department of Foreign Affairs (first-time adult application from abroad; supporting documents, including the FBR certificate or the parent’s Irish birth certificate, go by post to the Passport Service in Dublin).
Fee: About $102
Time: 4–11 weeks

source ↗

Places on old papers that lead to Ireland

If your family’s records name one of these, Ireland’s law may be the one that applies. The town decides.

Ireland (before 1922) · also Ulster, Northern Ireland
Northern Ireland is the UK; Irish law still counts anyone born on the island.
Today: Ireland, United Kingdom

Recent and pending changes

NO CHANGE
The 2026 citizenship bill leaves descent alone21 September 2026
The Government approved the General Scheme of the Irish Nationality and Citizenship (Amendment) Bill 2026 on 9 September and published it on 21 September. It changes naturalisation only: eight years’ residence instead of five for most applicants, language and civics tests, and a self-sufficiency test. It does not amend citizenship through an Irish parent or grandparent, or the Foreign Births Register. It goes next to the Joint Committee on Justice for pre-legislative scrutiny.
Department of Justice, Home Affairs and Migration: General Scheme of the Irish Nationality and Citizenship (Amendment) Bill 2026 (21 September 2026)Department of Justice, Home Affairs and Migration, 9 September 2026: Government approval for priority drafting of the bill

We re-read the official pages behind this guide every day. When one changes, a person checks the rule before we update anything here.

If descent doesn’t reach you

One residence program leads to Ireland without an ancestor, each with its own law and road to citizenship.

RetirementStamp 0 (person of independent means)
Ireland will let a family with roughly $55,000 a year in pension, savings, or investment income live there without working, so long as none of it comes from an Irish job.

Every source on this page

2 laws and official pages behind the answers, then the offices and pages behind the records and filing, then the bills and rulings we follow.

Not legal advice. Every answer comes from the country’s own laws and is tested against real cases. Where the law isn’t clear, we say “possible” rather than guess.

Who qualifies, generation by generation

Can you claim Irish citizenship through a parent?

Can you claim Irish citizenship through a grandparent?

Can you claim Irish citizenship through a great-grandparent?

What changes the answer

The dates that matter

Claiming through your mother or grandmother

Dual citizenship with your home country

Every way to apply, and the law behind it

The law

The law

What would settle an unsure case

The documents, as the rule lists them

Citizen by birth

Foreign Births Register

What it takes: time, cost, the hard part, who decides

Citizen by birth

Foreign Births Register

How it’s filed

Where each record lives, and how to ask for it

Translations

The passport

Places on old papers that lead to Ireland

Recent and pending changes

If descent doesn’t reach you

Every source on this page

Check your family for Ireland.

Who qualifies, generation by generation

Can you claim Irish citizenship through a parent?

Can you claim Irish citizenship through a grandparent?

Can you claim Irish citizenship through a great-grandparent?

What changes the answer

The dates that matter

Claiming through your mother or grandmother

Dual citizenship with your home country

Every way to apply, and the law behind it

The law

The law

What would settle an unsure case

The documents, as the rule lists them

Citizen by birth

Foreign Births Register

What it takes: time, cost, the hard part, who decides

Citizen by birth

Foreign Births Register

How it’s filed

Where each record lives, and how to ask for it

Translations

The passport

Places on old papers that lead to Ireland

Recent and pending changes

If descent doesn’t reach you

Every source on this page

Check your family for Ireland.