Citizenship by descent, country by country.

Reaches a great-grandparent.Citizen by birth · Foreign Births Register

Reaches a parent. A grandparent only if you were born before 1983.Citizen by descent (s.2) · Registration for historical unfairness (s.4L)

Reaches a parent.Citizen by descent (Art. 18)

Reaches a parent.Attribution by descent (Art. 8)

Reaches a parent.Citizen by descent (Art. 3) · Option for pre-1985 maternal lines (Art. 6(1)(i))

Reaches a parent. A grandparent only if you had already applied by 31 December 2025.Citizen by descent (Art. 7) · Recovery through an ancestor alive in 1900 (closed 31 December 2025) · Cutoff 31 December 2025

Reaches a grandparent. A great-grandparent only if your ancestor fled Nazi persecution.Restoration (Art. 116(2) GG / §15 StAG) · Citizen by descent (§4 StAG) · Declaration (§5 StAG)

Reaches a parent. A grandparent only if your ancestor fled Nazi persecution.Declaration under §58c · Citizen by descent (§7)

Reaches a grandparent. A great-grandparent only if you had already applied by 27 March 2025.Recognition by descent (parent or grandparent) · Cutoff 27 March 2025

Reaches a great-grandparent.Citizen by descent (Art. 5) · Registration of descendants of Malta-born persons

Reaches a parent. A grandparent only if you had already applied by 22 October 2025.Option for children of Spaniards born in Spain (Art. 20) · Democratic Memory Law (closed 22 Oct 2025) · Cutoff 22 October 2025

Reaches a grandparent.Child of a Portuguese citizen (Art. 1(1)(c)) · Grandchild with effective ties (Art. 1(1)(d)) · Great-grandchild naturalisation (2026 law) · Cutoff 19 May 2026

Reaches a parent.Citizen by birth (§ 1) · Retention at 22 (§ 8) · Declaration for former citizens (§ 4, residence)

Reaches a parent.Citizen by birth (§ 4) · Retention at 22 (§ 24) · Reacquisition by notification (§ 22a)

Reaches a parent.Citizen by birth (2 §) · Retention at 22 and recovery on application (14 §)

Reaches a parent.Citizen by birth (section 9) · Declaration for a child of a Finnish parent (section 26) · Declaration for former citizens (section 29)

Reaches a parent.Citizen by birth (Art. 1) · Retention at 22 (Art. 12)

Reaches a great-grandparent.Confirmation of Polish citizenship

Reaches a grandparent.Citizen by descent (§4) · Declaration by former citizens and their descendants (§31)

Reaches a great-grandparent.Citizenship for descendants of Czechoslovak citizens (2022 law)

Reaches a great-grandparent.Simplified naturalisation (§4(3))

Reaches a great-grandparent.Naturalisation of emigrants and descendants (Art. 12)

Reaches a great-grandparent.Naturalisation of emigrants and their descendants (Art. 11)

Reaches a parent.Citizen by descent (Art. 1) · Retention at 25 (Art. 7) · Reinstatement (Arts. 26 and 27) · Facilitated naturalisation under transitional law (Art. 51)

Reaches a great-grandparent.Restoration of citizenship (descendants of pre-1940 citizens)

Reaches a great-grandparent.Registration as a descendant of an exile (1940–1990) · Registration as an ethnic Latvian or Liv

Reaches a great-grandparent.Citizen by birth through a pre-1940 citizen (legal continuity)

Reaches a great-grandparent.Citizenship by territorial origin (Art. 8)

Reaches a great-grandparent.Citizen by descent (Art. 11) · Recognition for pre-1940 residents and their descendants (Art. 12(2)) · Cutoff 24 December 2025

Reaches a great-grandparent.Reacquisition by descendants of former citizens (Art. 11)

Reaches a great-grandparent.Naturalisation for persons of Bulgarian origin (Art. 15)

Reaches a great-grandparent.Admission of emigrants and descendants (Art. 18)

Reaches a parent.Citizen by descent, registered before 23 (Art. 6)

Reaches a parent.Emigrants and their children (Art. 8)

Reaches a great-grandparent.Citizenship by origin, to the third degree (Art. 6)

Reaches a great-grandparent.Citizen by descent, registered generation by generation

Reaches a great-grandparent.Citizen by descent (Section 3)

Reaches a great-grandparent.Citizen by descent (Art. 7)

Reaches a grandparent.Law of Return (a Jew, or the child or grandchild of a Jew, and their spouses)

Closed today, except if you had already applied by 24 November 2025.Reacquisition by descendants of emigrants (Law 41/2015), paternal line · Cutoff 24 November 2025

Reaches a great-grandparent.Simplified naturalisation for persons of Armenian origin (Art. 13)

Reaches a great-grandparent.Citizen by descent (Art. 2)

Reaches a great-grandparent.Citizen by descent (Art. 6)

Reaches a grandparent.Citizen by birth through a parent or grandparent (§7)

Reaches a grandparent.Citizen by birth (§25) · Registration for persons of Nigerian descent (§26)

Reaches a grandparent.Citizenship by birth (Art. 14(1)) · Regaining citizenship (§11–13)

Reaches a parent.Citizenship by descent (§2(1)(b) and §3)

Reaches a great-grandparent.Overseas Citizen of India card (§7A): a lifelong right to live and work in India

Reaches a grandparent.Citizenship by descent (s. 5) · Pakistan Origin Card, for a parent or grandparent (not citizenship)

Reaches a great-grandparent.Citizen by birth (Art. IV) · Reacquisition under RA 9225

Reaches a grandparent.Acquisition or reacquisition through a Vietnamese parent or grandparent (2025 law)

Reaches a parent.Citizenship at birth through a parent (Art. 2)

Reaches a parent.Citizenship at birth through a parent (Art. 2(1)) · F-4 Overseas Korean visa for descendants of any generation

Reaches a parent.Citizenship at birth through a parent (Art. 2(i)) · Reservation of Japanese nationality for a child born with dual nationality (Art. 12)

Reaches a grandparent.Citizenship by descent, registered (s. 16)

Reaches a parent.Citizenship by descent (s. 7), one generation

Reaches a great-grandparent.Citizen by descent, any generation for births before 15 December 2025 (Bill C-3)

Reaches a great-grandparent.Citizen by descent, registered at the consulate

Reaches a great-grandparent.Citizen by descent (§3C)

Reaches a great-grandparent.Citizen by descent (Art. 18(1), (4))

Reaches a grandparent.Citizen by descent through a parent or grandparent

Reaches a parent.Citizenship by descent (§5(1))

Reaches a great-grandparent.Nationality of origin (Art. 11)

Reaches a parent.Citizenship by birth abroad (Art. 34)

Reaches a great-grandparent.Citizen by descent (Art. 144)

Reaches a great-grandparent.Citizen by descent (Art. 90(3))

Reaches a great-grandparent.Citizen by descent (Art. 23(2))

Reaches a great-grandparent.Citizen by descent (Art. 13)

Reaches a parent.Citizen by descent (Art. 9)

Reaches a great-grandparent.Option for children of native Argentines (Art. 1(2))

Reaches a great-grandparent.Citizen by descent, registered at the consulate

Reaches a grandparent.Citizen by descent (Art. 10(2))

Reaches a great-grandparent.Citizen by descent, registered at the consulate

Reaches a great-grandparent.Citizen by birth to the third degree (Art. 7(2))

Reaches a grandparent.Citizen by descent · Descent to the third generation

Reaches a great-grandparent.Citizen by descent (Art. 141)

Reaches a parent.Children of Paraguayans who take residence (Art. 146(3))

Reaches a grandparent.Citizen by descent (Law 19.362)

Reaches a parent.Venezuelan by birth, by declaration (Art. 32)