KR · Citizenship by descent

Korean citizenship by descent

Reaches a parent. Every answer on this page is what Postern’s rulebook returns, word for word, with the law it cites. The free check runs the same rules.

Last verified 25 September 20263 sourcesNot legal advice

KR · PARENTLIKELYThrough a parentCitizenship at birth (Art. 2(1))KR · GRANDPARENTUNLIKELYThrough a grandparentTwo or more generationsKR · GREAT-GRANDPARENTUNLIKELYThrough a great-grandparentTwo or more generations
Routes
Citizenship at birth through a parent (Art. 2(1)) · F-4 Overseas Korean visa for descendants of any generation
Dual citizenship
Not kept: the law expects you to give up your other citizenship

The stamps assume no one in the line became a citizen of another country before the next person in the line was born. What changes each answer is below.

On this page
  1. 01Who qualifies
  2. 02Dates that matter
  3. 03Mothers’ lines
  4. 04Keeping your citizenship
  5. 05The routes and the law
  6. 06The documents
  7. 07What it takes
  8. 08Where the records live
  9. 09Law changes
  10. 10Other doors
  11. 11Sources

01Who qualifies

Who qualifies, generation by generation

LIKELY

Can you claim Korean citizenship through a parent?

Citizenship at birth (Art. 2(1))

A child of a Korean citizen is Korean at birth. Korea does not generally allow keeping another nationality afterward: you must choose one by 22, or pledge to the Minister of Justice not to exercise the foreign nationality's rights while in Korea; a man liable for military service cannot use that pledge to avoid choosing, and cannot renounce Korean nationality before completing or being exempted from service.

What would settle itWhether you intend to keep your other citizenship, which decides whether you choose Korean nationality outright, pledge not to exercise the other one, or let the Korean claim lapse.

What changes the answer

  • UNLIKELY
    If the parent is your mother and you were born before 1998Citizenship at birth (pre-1998 law)

    Before the law was made gender-neutral for births from 14 June 1998, a child of a Korean mother and foreign father generally did not acquire Korean nationality at birth; only the father's line counted.

UNLIKELY

Can you claim Korean citizenship through a grandparent?

Two or more generations

Korean citizenship does not reach a grandchild or great-grandchild directly; it runs through whether your parent was a Korean national at your birth. If not, the F-4 Overseas Korean visa is open to documented descendants of a Korean national of any generation, giving residence and open work rights, though not citizenship.

What would settle itWhether your parent held Korean nationality at your own birth, which would put you on the parent route instead.

UNLIKELY

Can you claim Korean citizenship through a great-grandparent?

Two or more generations

Korean citizenship does not reach a grandchild or great-grandchild directly; it runs through whether your parent was a Korean national at your birth. If not, the F-4 Overseas Korean visa is open to documented descendants of a Korean national of any generation, giving residence and open work rights, though not citizenship.

What would settle itWhether your parent held Korean nationality at your own birth, which would put you on the parent route instead.

02Dates that matter

The dates that matter

  1. 1998
    14 June 1998

    The 1997 amendment, effective 14 June 1998, first let a mother's Korean nationality pass to her child on the same terms as a father's; it applied to births from that date. Nationality Act (as amended)

03Mothers’ lines

How mothers’ lines were treated

In South Korea’s rule, the answer changes when the line runs through a woman:

  • UNLIKELY
    If the parent is your mother and you were born before 1998Citizenship at birth (pre-1998 law)

    Before the law was made gender-neutral for births from 14 June 1998, a child of a Korean mother and foreign father generally did not acquire Korean nationality at birth; only the father's line counted.

In the law’s words

04Keeping your citizenship

Dual citizenship with your home country

Dual citizenship is not guaranteed.

On every open route, the rule expects a citizen of the United States, Canada, the United Kingdom, Australia, New Zealand, Brazil, Argentina or South Africa to give up their other citizenship, or to get permission to keep it.

  • A dual national must select one nationality by the statutory deadline, unless they pledge to the Minister of Justice not to exercise any right under the foreign nationality while in Korea. Nationality Act (as amended), Art. 12(1)
  • A dual national who became one before turning 20 must choose a single nationality before turning 22; one who became dual at or after 20 must choose within two years. Nationality Act (as amended), Art. 12(1)
  • A man enlisted for military service must choose within three months of enlistment, or within two years of completing service, being discharged, or being exempted; this restriction exists so nationality cannot be renounced to evade service. Nationality Act (as amended), Art. 12(2)-(3)
  • A dual national may keep both nationalities by pledging to the Minister of Justice not to exercise any right under the foreign nationality while in Korea, instead of choosing one. Nationality Act (as amended), Art. 12(1) proviso

05The routes

Every route, and the law behind it

Citizenship at birth (Art. 2(1))

Open through a parent

  • LIKELY
    Through a parent

The law

What would settle an unsure case

  • Whether you intend to keep your other citizenship, which decides whether you choose Korean nationality outright, pledge not to exercise the other one, or let the Korean claim lapse.

Citizenship at birth (pre-1998 law)

Closed: no open answer on this route

  • UNLIKELY
    Through a parent, if the parent is your mother and you were born before 1998

    Before the law was made gender-neutral for births from 14 June 1998, a child of a Korean mother and foreign father generally did not acquire Korean nationality at birth; only the father's line counted.

The law

  • The 1997 amendment, effective 14 June 1998, first let a mother's Korean nationality pass to her child on the same terms as a father's; it applied to births from that date. Nationality Act (as amended)

What would settle an unsure case

  • Whether a special naturalisation route recognised your Korean maternal line despite your birth date.

Two or more generations

Closed: no open answer on this route

  • UNLIKELY
    Through a grandparent

    Korean citizenship does not reach a grandchild or great-grandchild directly; it runs through whether your parent was a Korean national at your birth. If not, the F-4 Overseas Korean visa is open to documented descendants of a Korean national of any generation, giving residence and open work rights, though not citizenship.

The law

What would settle an unsure case

  • Whether your parent held Korean nationality at your own birth, which would put you on the parent route instead.

06The documents

The documents, as the rule lists them

Citizenship at birth (Art. 2(1))

Through a parent

  • Your parent's Korean family register (gajokgwangyedeungnokbu) or passport
  • Your birth certificate
  • Report of birth at a Korean consulate

Most countries also want proof that no one in the line became a citizen elsewhere before the next birth: the naturalization record with its date, or a letter that none exists.

07What it takes

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

Citizenship at birth (Art. 2(1))

Time
A few weeks to a couple of months to register the birth and issue a first passport, once your parent’s Korean family register is confirmed.
Cost
About $150–350: certified family register copies, translations, and passport fees.
The hard part
Deciding how to handle dual nationality: without the pledge not to exercise the foreign nationality’s rights in Korea, you are expected to choose one nationality by 22, and a son must also weigh military-service timing before that deadline.
Who decides
The Korean consulate for your address, for the report of birth and family register entry; a passport follows once the entry is made.
The first record
Your parent’s Korean family relations register (gajokgwangyedeungnokbu) or citizenship certificate, from A Korean consulate, or the family register office (si/gu/eup/myeon) in Korea. Request the certified register through a Korean consulate for your address, giving the parent’s full name, date of birth and, if known, their Korean resident registration number. overseas.mofa.go.kr

How it’s filed

Where
A Korean consulate for your address.
How
In person; you appear in person
Fee
No fee
Decision
2–13 weeks
What goes in the file (4)
  1. The report of birth abroad, completed and signed
  2. Your U.S. birth certificate, translated into Korean
  3. Your parent's Korean family relations register or passport
  4. Your parents' marriage certificate, translated, if applicable
What goes wrong (2)
  • There is no fee for the birth report itself; a first Korean passport is a separate, later application.
  • A dual national must choose one nationality by 22 (if dual before 20) or within two years of the second nationality (if later), or file the non-exercise pledge instead; a man subject to military service must choose within a set period of entering the service-eligible register and generally cannot renounce Korean nationality until that obligation is resolved.

Checked 25 September 2026 · source ↗

Estimates are honest ranges from official fee tables and what families report; where a fee or time could not be confirmed, it says so.

08Where the records live

Where each record lives, and how to ask for it

  • birth

    A Korean consulate (report of overseas birth), which enters the child into the parent's family relations register (gajokgwangyedeungnokbu) in Korea

    Give the parent's full name, date of birth and, if known, Korean resident registration number; the consulate forwards the report to the register office in Korea.

    Ask
    Through an agent, in Korean · request page ↗
    Takes
    2–9 weeks
    Good to know (1)
    • Unverified: exact turnaround for the family register entry once a consulate forwards the report to Korea.

    Checked 25 September 2026 · source ↗

Translations

Into
Korean
Who may translate
Any certified translator
About
$20–$45 a page

U.S. birth and marriage certificates filed at a Korean consulate need a Korean translation; no sworn or embassy-approved translator is required. Unverified: whether a specific consulate insists on its own translation template.

Checked 25 September 2026 · source ↗

The passport

Where
A Korean consulate, once the family relations register entry recording the birth is in hand.
Fee
Not confirmed
Time
2–4 weeks
  • Passport fee shown as a placeholder; Korean consulates price passports by validity and page count.

Checked 25 September 2026 · source ↗

09Law changes

Recent and pending changes

The legislative watch has no pending bill or recent ruling recorded for South Korea.

The watch re-reads the official pages behind this guide every day. When one changes, a person re-checks the rule before anything here moves.

10Other doors

If descent doesn’t reach you

3 residence programs lead to South Korea without an ancestor, each with its own law and road to citizenship.

11Sources

Every source on this page

2 laws and official pages behind the answers, then the offices and pages behind the records and filing. Records and filing checked 25 September 2026.

  1. LawNationality Act (as amended) · Art. 2(1); Art. 12(1); Art. 12(2)-(3); Art. 12(1) proviso
  2. LawAct on the Immigration and Legal Status of Overseas Koreans: F-4 Overseas Korean visa
  3. RecordsA Korean consulate, or the family register office (si/gu/eup/myeon) in Korea: Your parent’s Korean family relations register (gajokgwangyedeungnokbu) or citizenship certificate · checked 25 September 2026

Not legal advice. Postern’s rulebook is written from the statutes and tested against documented cases; where the law is unsettled, the answer says “possible” or “unsure” rather than guess.

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