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Oceania

Nationality of Tonga: all obtaining pathways

Verified: 2026-06-21Informational guide; the linked official source is the valid reference.5 pathways

Tonga requires five years of residence for ordinary naturalization, reduced to two through marriage to a Tongan citizen, and provides a citizenship-by-investment route with a significantly shortened period. Citizenship is transmitted by ius soli and ius sanguinis with no residence requirement.

1

Naturalization by residence

Requirements

  • Having resided in Tonga for at least 5 years (Tonga's Nationality Act)
  • Being of good character
  • Demonstrating adequate knowledge of Tongan or English
  • The intention to reside permanently in Tonga
  • Tonga allows dual citizenship (since 2007/2008)

Documentation

  • Naturalization application form
  • Valid passport and residence permit
  • Criminal record certificate
  • Proof of 5 years' residence
  • References from Tongan citizens
  • Medical certificate
Duration: 5 years
Official link
2

Citizenship by birth (ius soli)

Requirements

  • Being born in Tonga where at least one of the parents is a Tongan citizen
  • Being born in Tonga and being stateless of any other nationality

Documentation

  • Tongan birth certificate
  • Proof of the parents' citizenship
Duration: Not required
Official link
3

Citizenship by descent (ius sanguinis)

Requirements

  • Being born outside Tonga where at least one of the parents is a Tongan citizen
  • Registering the birth with the Tongan authorities

Documentation

  • Applicant's birth certificate
  • Proof of the Tongan parent's citizenship
  • Overseas birth registration form
Duration: Not required
Official link
4

Citizenship by marriage

Requirements

  • Being married to a Tongan citizen
  • Residing in Tonga for at least 2 years
  • Being of good character

Documentation

  • Marriage certificate
  • Proof of the spouse's citizenship
  • Criminal record certificate
  • Proof of 2 years' residence in Tonga
Duration: 2 years
Official link
5

Citizenship by investment (CBI)

Requirements

  • Making a significant investment in, or a financial contribution to, the government of Tonga
  • An investment amount generally from 100,000 TOP (the Tongan pa'anga) or an approved donation/investment equivalent
  • Being of good character
  • Approval by the Privy Council and the King of Tonga
  • Tonga allows dual citizenship

Documentation

  • Citizenship-by-investment / special-naturalization application form
  • Valid passport
  • Criminal record certificate and background check
  • Proof of investment or financial contribution
  • Medical certificate
Duration: Significant reduction or waiver
Official link

Frequently asked questions about the nationality of Tonga

How many years of residence does Tonga require to naturalize?

According to the main pathway of Tonga (Naturalization by residence), the term is 5 years. The complete details of requirements and exceptions appear in the fact sheet.

Does Tonga allow dual nationality?

Tonga allows dual citizenship (since 2007/2008)

Can the nationality of Tonga be obtained by marriage?

Yes, through the Citizenship by marriage pathway (2 years). The complete requirements appear in the fact sheet of that pathway.

What documentation does naturalization in Tonga require?

The Naturalization by residence pathway requires: Naturalization application form; Valid passport and residence permit; Criminal record certificate; Proof of 5 years' residence; References from Tongan citizens; among 1 more documents.

What pathways exist to obtain the nationality of Tonga?

Tonga provides 5 pathways: Naturalization by residence, Citizenship by birth, Citizenship by descent, Citizenship by marriage, Citizenship by investment.

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