Citizenship Act, 1955 · Termination of citizenship
Section 9: Termination of citizenship
(1) Any citizen of India who by naturalisation, registration otherwise voluntarily acquires, or has at any time between the 26th January, 1950 and the commencement of this Act, voluntarily acquired, the citizenship of another country shall, upon such acquisition or, as the case may be, such commencement, cease to be a citizen of India:
Provided that nothing in this sub-section shall apply to a citizen of India who, during any war in which India may be engaged, voluntarily acquires the citizenship of another country, until the Central Government otherwise directs.
(2) If any question arises as to whether, when or how any [citizen of India] has acquired the citizenship of another country, it shall be determined by such authority, in such manner, and having regard to such rules of evidence, as may be prescribed in this behalf.
Source: India Code (indiacode.gov.in), the consolidated text published by the Legislative Department, Government of India. Text as updated on India Code on 15 October 2026. Words in square brackets [ ] were inserted or substituted by later amending Acts, and *** marks words omitted by an amendment. The amendment footnotes are not reproduced here. Official text on India Code.
Supreme Court judgments citing the section 9
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A. Raja v. D. Kumar
Whether the Appellant belongs to the Hindu Parayan caste in the State of Kerala and is covered by the 1950 Order insofar as it relates to the State of Kerala; whether the Appellant had still retained the Hindu Parayan…
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Md. Rahim Ali @ Abdur Rahim v. The State of Assam & Ors.
The Foreigners Tribunal, Nalbari declared the appellant to be a foreigner on the grounds that he failed to discharge his burden under Section 9 of the Foreigners Act, 1946.
- Heinz India Pvt. Ltd. & Anr. v. State of U.P. & Ors.
- Bhanwaroo Khan and Ors. v. Union of India and Ors.
- Akmal Ahmad v. State of Delhi
- Ashok Leyland Limited Etc. v. Union of India and Ors.