Koseki
Japanese family registers (koseki) and how to obtain them.
3 articles
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Nikkei 2nd, 3rd or 4th generation? Which Japanese visa fits your family line
Nikkei 2nd, 3rd or 4th generation? See which Japanese status of residence fits your family line, what each one allows, and how to prove your Japanese ancestry.
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Married to a Japanese National? How International Marriage Is Recorded in the Koseki
Foreign spouses don't get a Japanese koseki. Learn how your marriage is recorded in your spouse's family register, surname rules, children, and visa use.
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How to Get a Japanese Koseki (Family Register) from Overseas: A Step-by-Step Guide for 2026
Need a koseki for a Japanese spouse visa or Nikkei Long-Term Resident visa? Learn who can request one, how to apply by mail, fees, and payment options.
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