Pakistan Citizenship Act, 1951

The Pakistan Citizenship Act, 1951 sets out the rules for who is a Pakistani citizen and how citizenship can be acquired, registered, or lost. Section 3 defines who automatically became a citizen at the moment the Act took effect -- broadly, people (or their parents/grandparents) born in the territory now part of Pakistan who hadn't permanently settled abroad after August 1947, people with the relevant domicile as of 1937, naturalised British subjects who renounced other citizenship, and people who migrated to Pakistan from elsewhere in the subcontinent before the Act commenced.

Sections 4 and 5 cover ongoing citizenship: anyone born in Pakistan after the Act commenced is a citizen by birth (Section 4), with narrow exceptions for children of accredited diplomats and children born during enemy occupation. Citizenship by descent (Section 5) applies where a parent is a Pakistani citizen at the time of birth -- the law originally said "father," but a 2000 amendment made this gender-neutral, applying retroactively back to the Act's original commencement. Sections 6-8 deal with migration-based citizenship for people who moved to Pakistan from elsewhere in the Indo-Pakistan subcontinent, while Section 7 says people who migrated the other way, from Pakistan to India after March 1947, generally lose their claim to Pakistani citizenship under these provisions (with an exception for those who later returned under an official resettlement permit).

Section 9 allows citizenship by naturalisation for people who have obtained a naturalisation certificate under the Naturalisation Act, 1926. Section 10 addresses citizenship for women who married a "British subject" before 1949 and whose husband became a Pakistani citizen. Section 14 states that dual citizenship or nationality is "not permitted" as a general rule, with later provisions (14A on renunciation and 14B, not detailed in this extract) modifying this. Section 16 covers deprivation of citizenship, though the specific grounds are not detailed in the material reviewed here.

Administrative provisions include Section 17 (a certificate of domicile can be granted to someone who has ordinarily resided in Pakistan for at least one year and has acquired domicile there), Section 19 (a process for resolving doubtful citizenship cases via a government certificate), Section 20 (registering Commonwealth citizens as Pakistani citizens on specified terms), and Section 21, which treats false statements made to obtain or prevent action under the Act as an offence under Section 177 of the Pakistan Penal Code, without setting out a separate penalty figure in this Act. The Schedule contains the form of oath of allegiance required under Section 10.

This is a foundational but old law (1951) that has been amended repeatedly -- including changes as recent as 2026 noted in the text, alongside earlier amendments from 1952, 1973, 1978, and 2000. Given how central citizenship rules are and how much this Act has been amended, readers should check the current official text for the present rules on dual nationality, deprivation of citizenship, and registration procedures rather than relying solely on this summary.