If a person entered at the head of a family register and their spouse seek to change their surname due to unavoidable grounds, after obtaining the permission of the family court concerning the change of name and surname kana characters, they must submit a notification of the name and the surname kana characters for which permission has been received.
やむを得ない事由によつて氏を変更しようとするときは、戸籍の筆頭に記載した者及びその配偶者は、氏及び氏の振り仮名を変更することについて家庭裁判所の許可を得て、その許可を得た氏及び氏の振り仮名を届け出なければならない。
If a person who has married a foreign national seeks to change their surname to the surname used by their spouse, they may submit a notification to that effect and the surname kana characters they seek to change without obtaining the permission of the family court, but only within six months from the date of their marriage.
If on or after the day of their divorce, annulment of their marriage, or the death of their spouse, a person who has changed their surname pursuant to the provisions of the preceding paragraph seeks to change their surname back to the surname they were using at the time that they first changed their surname, they may submit a notification to that effect without obtaining the permission of the family court, but only within three months from the day in question.
前項の規定によつて氏を変更した者が離婚、婚姻の取消し又は配偶者の死亡の日以後にその氏を変更の際に称していた氏に変更しようとするときは、その者は、その日から三箇月以内に限り、家庭裁判所の許可を得ないで、その旨を届け出ることができる。
The provisions of paragraph (1) apply mutatis mutandis to a person (excluding a person entered at the head of a family register or their spouse) whose mother or father is a foreign national and who seeks to change their surname to the surname used by their mother or father.