Supplementary Provisions
附 則
Supplementary Provisions, Article 1Effective Date
第一条（施行期日）
This Cabinet Order comes into effect as of the date of enforcement of the provisions listed in Article 1, item (iii) of the Supplementary Provisions of the Act Partially Amending the Act on the Use of Numbers to Identify a Specific Individual in Administrative Procedures, etc. (referred to as the "Amending Act" in Article 9 and Article 12, paragraph (2) of the Supplementary Provisions) (May 26, 2025; hereinafter referred to as the "Effective Date").
この政令は、行政手続における特定の個人を識別するための番号の利用等に関する法律等の一部を改正する法律（附則第九条及び第十二条第二項において「改正法」という。）附則第一条第三号に掲げる規定の施行の日（令和七年五月二十六日。以下「施行日」という。）から施行する。
Supplementary Provisions, Article 2Transitional Measures
第二条（経過措置）
A person who, at the time this Cabinet Order comes into effect, has a former surname (meaning the former surname prescribed in Article 30-13 of the Order for the Enforcement of the Residential Basic Book Act; the same applies hereinafter) entered in the certificate of residence (or, for a certificate of residence prepared by means of a magnetic disk under Article 6, paragraph (3) of the Residential Basic Book Act (referred to as the "Act" in Article 8, paragraph (2) of the Supplementary Provisions), recorded; the same applies hereinafter) (excluding a person for whom an entry under the provisions of the following paragraph has already been made) may, only within one year from the Effective Date, request the mayor of the municipality of domicile (meaning the mayor of the municipality of domicile prescribed in Article 30-14, paragraph (1) of that Order; the same applies hereinafter) to enter in the certificate of residence the characters indicating the reading of the characters used in that former surname; in this case, the person making the request must submit a document certifying that the reading indicated by the characters pertaining to the request is in general use as the reading of the characters used in that former surname, except where the mayor of the municipality of domicile finds that there are special circumstances.
この政令の施行の際現に住民票に旧氏（住民基本台帳法施行令第三十条の十三に規定する旧氏をいう。以下同じ。）の記載（住民基本台帳法（附則第八条第二項において「法」という。）第六条第三項の規定により磁気ディスクをもって調製する住民票にあっては、記録。以下同じ。）がされている者（既に次項の規定による記載がされた者を除く。）は、施行日から起算して一年以内に限り、住所地市町村長（同令第三十条の十四第一項に規定する住所地市町村長をいう。以下同じ。）に対し、当該旧氏に用いられる文字の読み方を示す文字の住民票への記載を請求することができる。この場合において、当該請求をする者は、住所地市町村長において特別の事情があると認める場合を除き、当該請求に係る文字が示す読み方が当該旧氏に用いられる文字の読み方として通用していることを証する書面を提出しなければならない。
The mayor of the municipality of domicile who has received a request under the preceding paragraph is to enter in the certificate of residence the characters indicating the reading of the characters used in the former surname pertaining to the request, as the kana reading of the former surname (meaning the kana reading of the former surname prescribed in Article 30-13 of the Order for the Enforcement of the Residential Basic Book Act; the same applies hereinafter); in this case, for the application of that Article, Article 30-14 of that Order and other provisions of laws and regulations to the person for whom that entry has been made, the characters so entered are deemed to be the kana reading of the former surname.
前項の請求を受けた住所地市町村長は、当該請求に係る旧氏に用いられる文字の読み方を示す文字を、旧氏の振り仮名（住民基本台帳法施行令第三十条の十三に規定する旧氏の振り仮名をいう。以下同じ。）として住民票に記載をするものとする。この場合において、当該記載がされた者に係る同条及び同令第三十条の十四の規定その他の法令の規定の適用については、当該記載がされた文字を旧氏の振り仮名とみなす。
Supplementary Provisions, Article 3
第三条
On the day on which one year has elapsed from the Effective Date, the mayor of the municipality of domicile is to enter in the certificate of residence, as the kana reading of the former surname, the characters indicating the reading of the characters used in the former surname pertaining to a person who, at the time this Cabinet Order comes into effect, has a former surname entered in the certificate of residence (excluding a person for whom an entry under paragraph (2) of the preceding Article has been made by the day before that day); in this case, for the application of Articles 30-13 and 30-14 of the Order for the Enforcement of the Residential Basic Book Act and other provisions of laws and regulations to the person for whom that entry has been made, the characters so entered are deemed to be the kana reading of the former surname.
Without delay after the Effective Date, the mayor of the municipality of domicile is to notify a person who, at the time this Cabinet Order comes into effect, has a former surname entered in the certificate of residence of the characters indicating the reading of the characters used in that former surname that the mayor is to enter in that person's certificate of residence under the preceding paragraph.
Supplementary Provisions, Article 4
第四条
A person for whom an entry under paragraph (1) of the preceding Article has been made (excluding a person for whom an entry under the following paragraph has already been made) may request the mayor of the municipality of domicile to change the characters indicating the reading of the characters used in the former surname pertaining to that entry to other characters; in this case, the person making the request must submit a document certifying that the reading indicated by the characters pertaining to the request is in general use as the reading of the characters used in that former surname, except where the mayor of the municipality of domicile finds that there are special circumstances.
The mayor of the municipality of domicile who has received a request under the preceding paragraph is to enter in the certificate of residence the characters indicating the reading of the characters used in the former surname pertaining to the request, as the kana reading of the former surname; in this case, for the application of Articles 30-13 and 30-14 of the Order for the Enforcement of the Residential Basic Book Act and other provisions of laws and regulations to the person for whom that entry has been made, the characters so entered are deemed to be the kana reading of the former surname.
Supplementary Provisions, Article 5
第五条
To the extent necessary for the enforcement of the provisions of the preceding three Articles, the mayor of the municipality of domicile may request the heads of the local governments concerned and other persons to make the provision of information on the characters indicating the reading of the characters used in the former surname pertaining to a person who, at the time this Cabinet Order comes into effect, has a former surname entered in the certificate of residence.
Supplementary Provisions, Article 6
第六条
With regard to the application of Article 30-14, paragraphs (1), (3), (4), (6) and (8) of the Order for the Enforcement of the Residential Basic Book Act during the period until the day on which one year has elapsed from the Effective Date, the phrases listed in the middle column of the following table in the provisions listed in the left-hand column of the same table are deemed to be replaced with the phrases listed in the right-hand column of the same table, respectively.
| Paragraph (1) | ) are excluded | ) and a person who has a former surname entered in the certificate of residence but no kana reading of the former surname entered (hereinafter in this Article referred to as a "person with only a former surname entered") are excluded |
| Paragraph (3) | the former surname and the kana reading of the former surname | the former surname and the kana reading of the former surname (for a person with only a former surname entered, the former surname; the same applies hereinafter in this paragraph and paragraph (6)) |
| Paragraph (4) | a person with a former surname entered | a person with a former surname entered or a person with only a former surname entered |
| a person with a former surname entered | a person with a former surname entered or that person with only a former surname entered | |
| the former surname and the kana reading of the former surname | the former surname and the kana reading of the former surname (for a person with only a former surname entered, the former surname) | |
| changing | changing (for a person with only a former surname entered, changing to the former surname the person used immediately before that change and entering in that certificate of residence the kana reading of the former surname pertaining to that former surname) | |
| Paragraph (6) | a person with a former surname entered | a person with a former surname entered or a person with only a former surname entered |
| that person with a former surname entered | that person with a former surname entered or that person with only a former surname entered | |
| Paragraph (8) | person with a former surname entered | person with a former surname entered and person with only a former surname entered |
| The row for Article 11, paragraph (1) of the Act in the table in paragraph (8) | and Article 7, item (ii) | (for a person with only a former surname entered (meaning a person who has a former surname entered in the certificate of residence but no kana reading of the former surname entered), the former surname; the same applies hereinafter in this Chapter and that paragraph) and Article 7, item (ii) |
| The row for Article 15-3, paragraph (2) in the table in paragraph (8) | and Article 7, item (ii) of the Act | (for a person with only a former surname entered (meaning a person who has a former surname entered in the certificate of residence but no kana reading of the former surname entered), the former surname; the same applies in that Chapter and Article 30-5, item (iii)) and Article 7, item (ii) of the Act |
施行日から起算して一年を経過する日までの間における住民基本台帳法施行令第三十条の十四第一項、第三項、第四項、第六項及び第八項の規定の適用については、次の表の上欄に掲げるこれらの規定中同表の中欄に掲げる字句は、それぞれ同表の下欄に掲げる字句とする。
| 第一項 | を除く。） | 並びに住民票に旧氏の記載がされ、旧氏の振り仮名の記載がされていない者（以下この条において「旧氏記載者」という。）を除く。） |
| 第三項 | 旧氏及び旧氏の振り仮名を | 旧氏及び旧氏の振り仮名（旧氏記載者にあつては、旧氏。以下この項及び第六項において同じ。）を |
| 第四項 | 旧氏等記載者は | 旧氏等記載者又は旧氏記載者は |
| 旧氏等記載者に | 旧氏等記載者又は当該旧氏記載者に | |
| 旧氏及び旧氏の振り仮名を | 旧氏及び旧氏の振り仮名（旧氏記載者にあつては、旧氏）を | |
| 変更すること | 変更すること（旧氏記載者にあつては、当該変更の直前に称していた旧氏に変更すること及び当該住民票に当該旧氏に係る旧氏の振り仮名を記載すること） | |
| 第六項 | 旧氏等記載者は | 旧氏等記載者又は旧氏記載者は |
| 当該旧氏等記載者 | 当該旧氏等記載者又は当該旧氏記載者 | |
| 第八項 | 旧氏等記載者 | 旧氏等記載者及び旧氏記載者 |
| 第八項の表法第十一条第一項の項 | 並びに第七条第二号 | （旧氏記載者（住民票に旧氏の記載がされ、旧氏の振り仮名の記載がされていない者をいう。）にあつては、旧氏。以下この章及び同項において同じ。）並びに第七条第二号 |
| 第八項の表第十五条の三第二項の項 | 並びに法第七条第二号 | （旧氏記載者（住民票に旧氏の記載がされ、旧氏の振り仮名の記載がされていない者をいう。）にあつては、旧氏。同章及び第三十条の五第三号において同じ。）並びに法第七条第二号 |
Supplementary Provisions, Article 7
第七条
With regard to the application of Article 30-14, paragraphs (1) and (2) of the Order for the Enforcement of the Residential Basic Book Act to a person, among the persons whose surname has changed prescribed in Article 30-14, paragraph (1) of that Order (including where it is applied by replacing terms under the preceding Article; the same applies hereinafter in this paragraph) (referred to as "person whose surname has changed" in paragraph (1) of the following Article), for whom no kana reading of the former surname is entered or recorded in the family register or removed family register in which the former surname the person wishes to request be entered in the certificate of residence is entered or recorded, the phrases listed in the middle column of the following table in the provisions listed in the left-hand column of the same table are deemed to be replaced with the phrases listed in the right-hand column of the same table, respectively.
| Paragraph (1) | entry of the kana reading of the former surname | entry of the characters indicating the reading of the characters used in the former surname |
| the kana reading of the former surname and other | the characters indicating the reading of the characters used in the former surname and other | |
| , to the mayor of the municipality that keeps the basic resident register in which that person is recorded (referred to as the "mayor of the municipality of domicile" in the following paragraph and paragraphs (4) through (6)) | , attaching a document certifying that the person used the reading indicated by those characters in the past as the reading of the characters used in that former surname (excluding where the mayor of the municipality that keeps the basic resident register in which that person is recorded (hereinafter in this paragraph, the following paragraph and paragraphs (4) through (6) referred to as the "mayor of the municipality of domicile") finds that there are special circumstances), to the mayor of the municipality of domicile | |
| to the kana reading of the former surname | to the characters indicating the reading of the characters used in the former surname | |
| Paragraph (2) | and the kana reading of the former surname are the person's former surname and the kana reading of the former surname pertaining to that former surname | is the person's former surname |
住民基本台帳法施行令第三十条の十四第一項（前条の規定により読み替えて適用する場合を含む。以下この項において同じ。）に規定する氏に変更があった者（次条第一項において「氏に変更があった者」という。）のうち、住民票への記載を請求しようとする旧氏の記載又は記録がされている戸籍又は除かれた戸籍に旧氏の振り仮名の記載又は記録がされていないものに係る同令第三十条の十四第一項及び第二項の規定の適用については、次の表の上欄に掲げるこれらの規定中同表の中欄に掲げる字句は、それぞれ同表の下欄に掲げる字句とする。
| 第一項 | 旧氏の振り仮名の記載を | 旧氏に用いられる文字の読み方を示す文字の記載を |
| 旧氏の振り仮名その他 | 旧氏に用いられる文字の読み方を示す文字その他 | |
| を、その者が記録されている住民基本台帳を備える市町村の市町村長（次項及び第四項から第六項までにおいて「住所地市町村長」という。） | に当該文字が示す読み方を過去に当該旧氏に用いられる文字の読み方として使用していたことを証する書面（その者が記録されている住民基本台帳を備える市町村の市町村長（以下この項、次項及び第四項から第六項までにおいて「住所地市町村長」という。）において特別の事情があると認める場合を除く。）を添付して、住所地市町村長 | |
| 旧氏の振り仮名に | 旧氏に用いられる文字の読み方を示す文字に | |
| 第二項 | 及び旧氏の振り仮名がその者の旧氏及び当該旧氏に係る旧氏の振り仮名 | がその者の旧氏 |
The mayor of the municipality of domicile who has received a request under Article 30-14, paragraph (1) of the Order for the Enforcement of the Residential Basic Book Act, applied by replacing terms under the preceding paragraph, is to enter in the certificate of residence the characters indicating the reading of the characters used in the former surname pertaining to the request, as the kana reading of the former surname; in this case, for the application of Articles 30-13 and 30-14 of that Order and other provisions of laws and regulations to the person for whom that entry has been made, the characters so entered are deemed to be the kana reading of the former surname.
前項の規定により読み替えて適用する住民基本台帳法施行令第三十条の十四第一項の請求を受けた住所地市町村長は、当該請求に係る旧氏に用いられる文字の読み方を示す文字を、旧氏の振り仮名として住民票に記載をするものとする。この場合において、当該記載がされた者に係る同令第三十条の十三及び第三十条の十四の規定その他の法令の規定の適用については、当該記載がされた文字を旧氏の振り仮名とみなす。
Supplementary Provisions, Article 8
第八条
With regard to the application of Article 30-14, paragraph (1) of the Order for the Enforcement of the Residential Basic Book Act (including where it is applied by replacing terms under Article 6 of the Supplementary Provisions or paragraph (1) of the preceding Article; the same applies hereinafter in this paragraph) to a person whose surname has changed for whom, on the day on which the former surname that had been entered in the certificate of residence was last deleted, no kana reading of the former surname was entered in that certificate of residence, the phrase "an entry of the former surname and the kana reading of the former surname has been made" in Article 30-14, paragraph (1) of that Order is deemed to be replaced with "an entry of the former surname has been made", and the phrase "the former surname and the kana reading of the former surname" is deemed to be replaced with "the former surname".
In the case where a removed certificate of residence pertaining to a person whose surname has changed has a former surname entered (or, for a removed certificate of residence prepared by means of a magnetic disk under Article 15-2, paragraph (2) of the Act, recorded; the same applies hereinafter in this paragraph) but no kana reading of the former surname entered, with regard to the application of Article 30-14, paragraph (9) of the Order for the Enforcement of the Residential Basic Book Act, the phrase "of the former surname and the kana reading of the former surname" in Article 30-14, paragraph (9) of that Order is deemed to be replaced with "of the former surname"; the phrase "the former surname and the kana reading of the former surname (meaning the kana reading of the former surname prescribed in Article 30-13 of the Order for the Enforcement of the Residential Basic Book Act; the same applies hereinafter in this Chapter)" in the row for Article 12, paragraph (5) as applied mutatis mutandis in Article 15-4, paragraph (5) in the table of that paragraph is deemed to be replaced with "the former surname"; the phrase "the former surname and the kana reading of the former surname" in the row for Article 12-2, paragraph (4) as applied mutatis mutandis in Article 15-4, paragraph (5) in that table is deemed to be replaced with "the former surname"; and the phrase "and the kana reading of the former surname (meaning the kana reading of the former surname prescribed in Article 30-13 of that Order), and" in the row for Article 15-4, paragraph (3) in that table is deemed to be replaced with "and".
氏に変更があった者に係る除票に旧氏の記載（法第十五条の二第二項の規定により磁気ディスクをもって調製する除票にあっては、記録。以下この項において同じ。）がされ、旧氏の振り仮名の記載がされていない場合における住民基本台帳法施行令第三十条の十四第九項の規定の適用については、同項中「旧氏及び旧氏の振り仮名の」とあるのは「旧氏の」と、同項の表第十五条の四第五項において準用する第十二条第五項の項中「旧氏及び旧氏の振り仮名（住民基本台帳法施行令第三十条の十三に規定する旧氏の振り仮名をいう。以下この章において同じ。）」とあるのは「旧氏」と、同表第十五条の四第五項において準用する第十二条の二第四項の項中「旧氏及び旧氏の振り仮名」とあるのは「旧氏」と、同表第十五条の四第三項の項中「及び旧氏の振り仮名（同令第三十条の十三に規定する旧氏の振り仮名をいう。）並びに」とあるのは「並びに」とする。
Supplementary Provisions, Article 9
第九条
The scope of kana and symbols that may be used as the characters indicating the reading of the characters used in a former surname is the scope of kana and symbols specified by Ministry of Justice Order under Article 13, paragraph (3) of the Family Register Act (Act No. 224 of 1947) as amended by Article 7 of the Amending Act.
旧氏に用いられる文字の読み方を示す文字に用いることができる仮名及び記号の範囲は、改正法第七条の規定による改正後の戸籍法（昭和二十二年法律第二百二十四号）第十三条第三項の法務省令で定められた仮名及び記号の範囲とする。
Supplementary Provisions, Article 10Delegation to Order of the Ministry of Internal Affairs and Communications
第十条（総務省令への委任）
In addition to what is provided for in these Supplementary Provisions, the transitional measures necessary for the enforcement of this Cabinet Order are specified by Order of the Ministry of Internal Affairs and Communications.
この附則に定めるもののほか、この政令の施行に関し必要な経過措置は、総務省令で定める。
the Effective Datemachine translation
「施行日」
In the supplementary provisions (附則) of Cabinet Order No. 17 of 2025, 26 May 2025: the date the provisions listed in Article 1, item (iii) of the supplementary provisions of the Act Partially Amending the Act on the Use of Numbers to Identify a Specific Individual in Administrative Procedures, etc. (Act No. 48 of 2023) come into effect, and with them that Cabinet Order.
Short name set inSupplementary Provisions, Article 1, paragraph (1)
mayor of the municipality of domicilemachine translation
「住所地市町村長」
In Articles 30-14 and 30-16 and in the supplementary provisions (附則) of Cabinet Order No. 17 of 2025, the mayor of the municipality whose Basic Resident Register (住民基本台帳) records the person making the request or application.
Defined inSupplementary Provisions, Article 2, paragraph (1)
former surnamemachine translation
「旧氏」
A surname a person used in the past that is entered or recorded in their family register (戸籍) or a removed family register, as provided for in Article 30-13 of this Order.
Defined inSupplementary Provisions, Article 2, paragraph (1)
kana reading of the former surnamemachine translation
「旧氏の振り仮名」
The kana showing how the characters of a former surname (旧氏) are read, as entered or recorded in the person's family register (戸籍) or a removed family register, as provided for in Article 30-13 of this Order.
Defined inSupplementary Provisions, Article 2, paragraph (2)
person with only a former surname enteredmachine translation
「旧氏記載者」
In Article 30-14 as Article 6 of the supplementary provisions (附則) of Cabinet Order No. 17 of 2025 reads it for one year from 26 May 2025, a person whose certificate of residence (住民票) carries a former surname (旧氏) but not its kana reading.
Short name set inSupplementary Provisions, Article 6, paragraph (1)· applies only in this article
person whose surname has changedmachine translation
「氏に変更があった者」
In Articles 7 and 8 of the supplementary provisions (附則) of Cabinet Order No. 17 of 2025, a person whose surname (氏) has changed, as referred to in Article 30-14, paragraph (1) of this Order, who may ask for a former surname (旧氏) to be entered on their certificate of residence (住民票).
Short name set inSupplementary Provisions, Article 7, paragraph (1)· applies only in this provision and in Supplementary Provisions, Article 8, paragraph (1)
family register
戸籍
The public record of who a person is related to by birth, marriage and adoption. One is made for each married couple and their children who share their surname, where they set their registered domicile (本籍); when a new register is made for a person married to a foreign national (外国人) or with no spouse, it is made for that person and their children who share their surname (Family Register Act, Article 6). The mayor of the municipality (in Tokyo's special wards and the wards of designated cities, the ward mayor) administers this work unless the Act provides otherwise (Articles 1 and 4). Besides the registered domicile, it records for each person their name and its reading, date of birth, why and when they entered the register, their parents and, for an adopted child, their adoptive parents, whether they are husband and wife, and the register they came from, among other things (Article 13). Entries are made on a notification (届出) — of a birth, a marriage, a divorce or a death, for example (Articles 49, 74, 76 and 86) — or on a report, an application, a court decision and a few other grounds (Article 15). When a marriage between a Japanese national and a foreign national is notified, a new family register is made for the Japanese national, not for the couple, unless the Japanese national already heads a register of their own (Article 6 and Article 16, paragraph (3)). A foreign national who lives in a municipality as a mid- to long-term resident (中長期在留者), a special permanent resident (特別永住者) or in one of a few other categories is recorded in that municipality's resident record (住民票): instead of the family register entry a Japanese resident's record carries, it states their nationality, and for a mid- to long-term resident their status of residence (在留資格) and period of stay (Residential Basic Book Act, Article 30-45). A foreign national in none of those categories is not recorded there (Article 39).
Written by AI using Family Register Act, Arts. 1, 4, 6, 13, 15, 16, 49, 74, 76, 86 and Residential Basic Book Act, Arts. 7, 30-45, 39 as a reference.