Citizenship Law in Japan

Introduction

Citizenship law in Japan determines who is a citizen and how citizenship may be acquired, lost, or renounced. The legal framework reflects the nation’s identity and values.

Acquisition by Birth

Citizenship is acquired automatically by birth in the territory (jus soli) or by descent from a citizen parent (jus sanguinis). Japan primarily applies jus sanguinis with limited jus soli.

Naturalization

Foreign nationals may acquire citizenship through naturalization after meeting residency requirements, language proficiency, knowledge of society, and good character requirements.

Dual Citizenship

Japan does not permit dual citizenship, requiring renunciation of other nationalities upon naturalization.

Loss of Citizenship

Citizenship may be lost through voluntary renunciation, deprivation for fraud or serious crime, or acquisition of another citizenship where dual citizenship is not permitted.

Conclusion

Citizenship law in Japan defines the boundaries of the national community and the rights and obligations that accompany membership.