Passport Path
DEPSG-DEP-03

Deprivation — acquisition of foreign citizenship (no-dual)

Citizenship in Singapore

Eligibility
The Government may deprive a citizen who, while aged 18+, at any time after 6 April 1960 acquired a foreign citizenship by registration, naturalisation or other voluntary and formal act (other than marriage), or having so acquired before 18 retained it after 18. Core no-dual-citizenship enforcement.
Renunciation
Required

Overview

The Government may deprive a citizen who, while aged 18, at any time after 6 April 1960 acquired a foreign citizenship by registration, naturalisation or other voluntary and formal act (other than marriage), or having so acquired before 18 retained it after 18. Core no-dual-citizenship enforcement.

Who qualifies

Evidence-pinned eligibility & rules:

  • The Registrar of Citizens shall strike a person's name off the register of citizens of Singapore on loss of citizenship: where the person ceased to be a citizen under Article 122(2), 126(3), 136 or 138; made a renunciation declaration registered under Article 128; or is the subject of a deprivation order under Article 129 (and related loss provisions). [Singapore Citizenship Rules r.14]

How to apply

Procedure (Constitution Art 133 + Singapore Citizenship Rules r.10-15): before a deprivation order the Government gives written notice of the ground and of the right to a committee of inquiry (Art 133; r.10); the committee (chaired by a person qualified as a Supreme Court Judge) inquires and reports to the Minister (r.11-13); on deprivation the citizenship certificate is cancelled and the name struck off (r.14-15). A decision under Part 10 is not subject to appeal or review in any court (Third Schedule para 2).

Legal basis

Operative authority: Constitution Art 134 (Constitution of the Republic of Singapore, Part 10, 2020 Revised Edition). Statute pins: SG-SRC-CONST: Art 134(1). KCQs: Q7.1, Q18.2.

Example scenarios

  • Exposed to deprivation under Art 134(1)(a). Because she, while over 18 and after 6 April 1960, acquired foreign citizenship by a voluntary and formal act (naturalisation, not by marriage), the Government MAY by order deprive her of Singapore citizenship. The process runs through the Art 133 committee-of-inquiry procedure; it is discretionary ('may'), administrative, and non-justiciable (Third Schedule para 2 ouster).

    Art 134(1)(a) (SG-E2-022): the Government may deprive a citizen who, while of or over 18, at any time after 6 April 1960 acquired by registration, naturalisation or other voluntary and formal act (other than marriage) the citizenship of any country outside Singapore. This reaches ALL citizens including by birth (SG-DEP-03 'no-dual enforcement'). 'May' is discretionary (legal precision: discretionary, not automatic). Procedure: Art 133 notice + committee of inquiry (SG-E2-025). Ouster: Art 140 + Third Schedule para 2 (SG-E2-026).

  • Exposed to deprivation under Art 134(1)(a)'s retention limb. Because he acquired NZ citizenship before 18 but continues to retain it after 18, the Government may by order deprive him of Singapore citizenship. Singapore's no-dual policy requires election at majority. He must renounce one nationality; failing that, deprivation is discretionary via the Art 133 committee of inquiry.

    Art 134(1)(a) (SG-E2-022): '...or having so acquired such citizenship before the age of 18 years continues to retain it after that age.' This retention limb captures David. Singapore's no-dual enforcement (SG-DEP-03). Note distinction from descent/registered-minor election (Art 122(4)/126(3)): those cease-at-22 rules apply to minors who ARE citizens by descent/registration; David is a citizen by birth, so the operative mechanism is discretionary deprivation under Art 134, not automatic cessation at 22. Procedure Art 133; ouster Third Schedule para 2.

  • Exposed to deprivation under Art 134(1)(b) — the spousal-acquisition limb specific to women registered under Art 123(2). Because she (a woman who is a SG citizen by registration under Art 123(2)) acquired the citizenship of a country outside Singapore by virtue of marriage to a non-citizen, the Government may by order deprive her of Singapore citizenship via the Art 133 procedure.

    Art 134(1)(b) (SG-E2-011): 'the citizen, being a woman who is a citizen of Singapore by registration under Article 123(2), has acquired the citizenship of any country outside Singapore by virtue of her marriage to a person who is not a citizen of Singapore.' This is a distinct deprivation ground that DOES reach marriage-based foreign-citizenship acquisition (whereas Art 134(1)(a) excludes acquisition 'by marriage'). Procedure: Art 133 committee of inquiry. Discretionary ('may'). Note: the general statelessness bar in Art 129(7) does not textually extend to Art 134.

  • She will AUTOMATICALLY CEASE to be a Singapore citizen on attaining age 22 unless, within 12 months after attaining 21, she takes the Oath of Renunciation, Allegiance and Loyalty (Second Schedule) and, where the Government so requires, divests her foreign citizenship. This is an automatic statutory cessation for minor descent citizens (Art 122(4)) — distinct from discretionary Art 134 deprivation. The clock is running: she has until 12 months after her 21st birthday to act.

    Art 122(4) (SG-E1-017, SG-E1-018): 'A person who, being a minor, becomes a citizen of Singapore by descent shall cease to be a citizen of Singapore on attaining the age of 22 years unless within 12 months after he attains the age of 21 years he takes the Oath of Renunciation, Allegiance and Loyalty in the form set out in the Second Schedule and where the Government so requires divests himself of any foreign citizenship or nationality.' ICA (SG-SRC-016): must take ORAL within 12 months of turning 21; divest foreign citizenship before taking ORAL; failure → loss of citizenship at 22. This is AUTOMATIC cessation (the no-dual engine at majority, SG-E1-018), contrasted with discretionary deprivation under Art 134 for citizens by birth. Window: W6/W7.

  • He must take the Oath of Renunciation, Allegiance and Loyalty within 12 months of turning 21 or he will cease to be a Singapore citizen at 22 (Art 126(3)) — the registered-minor parallel to the descent rule. Separately, as a male citizen he is subject to NS; electing to RETAIN Singapore citizenship keeps his NS liability live, and he cannot freely renounce to avoid NS (Art 128(2)(b)). The two regimes operate together.

    Art 126(3) (SG-E1-024, SG-E3-004): 'Any person who becomes a citizen of Singapore by registration under section 13 of the Singapore Citizenship Ordinance 1957 or Article 124 shall cease to be a citizen of Singapore on attaining the age of 22 years unless within 12 months after he attains the age of 21 years he takes the Oath of Renunciation, Allegiance and Loyalty in the form set out in the Second Schedule.' This is the registered-minor retention obligation paralleling Art 122(4) for descent citizens. NS overlay: as a male citizen he is subject to the Enlistment Act (SG-E3-011); Art 128(2)(b) bars renunciation to avoid NS (SG-E2-013, SG-E3-020). Window W4-W7.

Informational summary compiled from primary legal sources — not legal advice. Citizenship law changes; verify with the competent authority before acting. Last verified 2026-06-19.

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