Article 1This Act comes into effect as of January 1, 1985.

Article 2With regard to the naturalization or renouncement of citizenship of a person who submitted an application or notification for the naturalization or renouncement prior to the effective date of this Act, the provisions then in force remain applicable.

Article 3As to applicability of the provisions of Article 14, paragraph (1) of the Nationality Act as amended by the provisions of Article 1 (referred to below as "New Nationality Act"), a Japanese citizen already in possession of foreign nationality as of the effective date of this Act is deemed to come into possession of the foreign nationality and Japanese citizenship as of the effective date of this Act. In these cases, the person is deemed to have made the selection declaration as provided in paragraph (2) of the Article upon expiration of the time period, as provided in the paragraph, within which to select nationality or citizenship.

Article 4The provisions of Article 17, paragraph (1) of the New Nationality Act also apply to a person under twenty years of age who has lost Japanese citizenship pursuant to the provisions of Article 9 of the Nationality Act prior to its amendment as provided under Article 1.

Article 5(1)A person (excluding a person who was once a Japanese citizen) born between January 1, 1965 and the day before the effective date of this Act (referred to below as "effective date") whose mother was a Japanese citizen at the time of birth may acquire Japanese citizenship within three years of the effective date by notification to the Minister of Justice pursuant to the provisions of Ministry of Justice Order if the mother is currently a Japanese citizen or was a Japanese citizen at the time of her death.

(2)The notification prescribed in the preceding paragraph is carried out by a legal representative on behalf of the person desiring to acquire citizenship if the person is under fifteen years of age.

(3)If the person desiring to make notification as provided in paragraph (1) is unable to do so within the time period as provided in the paragraph due to a natural disaster or other circumstances beyond the person's control, the time period for the notification is three months after the ability to do so is regained.

(4)The person making notification pursuant to the provisions of paragraph (1) acquires Japanese citizenship as of the time of the notification.

Article 6(1)If a father or mother has acquired Japanese citizenship pursuant to the provisions of the preceding Article, paragraph (1), the child (excluding a child who was once a Japanese citizen) may acquire Japanese citizenship within the time period stated in the paragraph by notification to the Minister of Justice pursuant to the provisions of Ministry of Justice Order; provided, however, that this does not apply if the father or mother is an adoptive parent or the child was acknowledged after the time of birth.

(2)The provisions from paragraph (2) through paragraph (4) of the preceding Article apply mutatis mutandis to the case stated in the preceding paragraph.

Article 1This Act comes into effect as of the date on which the Administrative Procedure Act (Act No. 88 of 1993) comes into effect.

Article 2If a consultation or other request is made to go through the procedures corresponding to the procedures for getting the opportunity for the hearing or response provided in Article 13 of the Administrative Procedure Act or other procedures for presenting an opinion to a council or any other panel based on the laws and regulations prior to the effective date of this Act, the provisions then in force remain applicable to the procedures for adverse disposition pertaining to the consultation or other request notwithstanding the provisions of related Acts as amended by this Act.

Article 13With regard to applicability of penal provisions for acts committed prior to the effective date of this Act, the provisions then in force remain applicable.

Article 14Hearings implemented pursuant to the provisions of Acts prior to the effective date of this Act (excluding those pertaining to adverse dispositions) or procedures incidental to the hearings are deemed to have been implemented under corresponding provisions of related Acts as amended by this Act.

Article 15Other than those stated in Article 2 through the preceding Article of the Supplementary Provisions, transitional measures necessary to effectuate this Act are as prescribed by Cabinet Order.

Article 1This Act comes into effect as of the day specified by Cabinet Order within a period not exceeding six months from the date of promulgation.

Article 1This Act comes into effect as of the day on which twenty days have lapsed from the date of promulgation; provided, however, that the provisions listed in the following items come into effect as of the day provided in each respective item:

Article 2(1)A person making a former notification (referring to the act of notification pertaining to acquisition of Japanese citizenship by a child acknowledged by a father or mother not falling under the children having acquired the status of a child born in wedlock through the marriage of the father and mother and their acknowledgment of the child as provided in Article 3, paragraph (1) of the Nationality Act prior to the amendment by this Act pursuant to the provisions of the paragraph before the effective date of this Act (referred to below as the "effective date"); the same applies below) falling under the requirements (except for notification to the Minister of Justice; the same applies in Article 4, paragraph (1) of the Supplementary Provisions) provided in Article 3, paragraph (1) of the Nationality Act as amended by this Act (referred to as the "new Act" in Article 4, paragraph (1) of the Supplementary Provisions), if the provisions of Article 3, paragraph (1) apply (except for a person who was once a Japanese citizen) at the time of the former notification at issue, may acquire Japanese citizenship by notification to the Minister of Justice only within three years of the effective date.

(2)The notification stated in the preceding paragraph is carried out by a legal representative on behalf of the person desiring to acquire citizenship if the person is under fifteen years of age.

(3)The person making a notification pursuant to the provisions in paragraph (1) acquires Japanese citizenship at the time of the notification; provided, however, that if the former notification is made on or after January 1, 2003, Japanese citizenship is acquired retroactive to the time of the former notification.

Article 3(1)Except if an objection was made to the Minister of Justice, a person making a former notification on or after June 5, 2008 is deemed to have made the notification pursuant to the provisions of paragraph (1) of the preceding Article as of the effective date, and the provisions of the paragraph and the proviso to paragraph (3) of the Article apply.

(2)The objection prescribed in the preceding paragraph must be made prior to the effective date.

Article 4(1)Other than as provided in Article 2, paragraph (1) of the Supplementary Provisions, a child acknowledged by the father or mother, who met the requirements provided in Article 3, paragraph (1) of the new Act should the provisions of the paragraph apply during the period from January 1, 2003 until the day before the effective date (except for a person who once was a Japanese citizen and a person who is able to make notification pursuant to the provisions in the paragraph) may acquire Japanese citizenship if the father or mother is currently a Japanese citizen or was a Japanese citizen at the time of death by notification to the Minister of Justice as long as it is made within three years of the effective date.

(2)The person making notification pursuant to the provisions stated in the preceding paragraph acquires Japanese nationality at the time of the notification.

Article 5(1)If a father or a mother has acquired Japanese citizenship pursuant to Article 2, paragraph (1) of the Supplementary Provisions (excluding cases in which the provisions of proviso to paragraph (3) of the Article apply), a child (except one who was once a Japanese citizen) born before the father or mother acquired Japanese citizenship, since the time of a former notification by the father or mother, may acquire Japanese citizenship by notification to the Minister of Justice as long as it is made within three years of the effective date; provided, however, that this does not apply if the father or mother is an adoptive parent or the child was acknowledged after the time of birth.

(2)The person making notification pursuant to the provisions stated in the preceding paragraph acquires Japanese citizenship at the time of the notification.

(3)The provisions of Article 2, paragraph (2) of the Supplementary Provisions apply mutatis mutandis to the notification provided for in the provisions of paragraph (1).

Article 6If a person desiring to make notification pursuant to Article 2, paragraph (1), Article 4, paragraph (1) of the Supplementary Provisions, or paragraph (1) of the preceding Article is unable to make notification within the prescribed time period due to a natural disaster or other circumstances beyond the person's control, the time period for the notification is three months after the ability to do so is regained.

Article 7As to applicability of the provisions of the Nationality Act, Article 14, paragraph (1) if a person having a foreign nationality has acquired Japanese citizenship pursuant to the provisions of Article 2, paragraph (1) of the Supplementary Provisions (limited to cases when the provisions of proviso to paragraph (3) of the Article applies), that person is deemed to come to possess foreign nationality and Japanese citizenship at the time of notification pursuant to the provisions of Article 2, paragraph (1) of the Supplementary Provisions (as of the effective date if the notification is deemed to be made pursuant to the provisions of Article 3, paragraph (1) of the Supplementary Provisions).

Article 8The provisions of Article 102 of the Family Register Act (Act No. 224 of 1947) apply mutatis mutandis to notification of acquisition of citizenship if Japanese citizenship was acquired pursuant to the provisions of Article 2, paragraph (1), Article 4, paragraph (1), or Article 5, paragraph (1) of the Supplementary Provisions. In this case, the term "the date of that acquisition" in Article 102, paragraph (1) of the Act is deemed to be replaced with "the date of that acquisition (if the provisions of the proviso to Article 2, paragraph (3) of the Supplementary Provisions of the Act Partially Amending the Nationality Act (Act No. 88 of 2008) apply, the date of notification pursuant to the provisions of paragraph (1) of the Article (if the notification is deemed to have been made pursuant to the provisions of Article 3, paragraph (1) of the Supplementary Provisions of the Act, the effective date of the Act))".

Article 9As to applicability of the provisions of Article 104 of the Family Register Act if a child born before the time of notification pursuant to the provisions of Article 2, paragraph (1) of the Supplementary Provisions, at or after the time of acquisition of Japanese citizenship by the father or mother through acquisition of Japanese citizenship retroactive to the time of former notification by the father or mother through the application of the provisions of the proviso to Article 2, paragraph (1) and paragraph (3) of the Supplementary Provisions receives application of the provisions of Article 2 and Article 12 of the Nationality Act, the term "the date of birth" in paragraph (1) of that Article is "the date of notification by the father or mother pursuant to the provisions of Article 2, paragraph (1) of the Supplementary Provisions of the Act Partially Amending the Nationality Act (Act No. 88 of 2008) (if the notification is deemed to be made pursuant to the provisions of Article 3, paragraph (1) of the Supplementary Provisions of the Act, the date on which the Act comes into effect)".

Article 10The procedures of notification as provided in Article 2, paragraph (1), Article 4, paragraph (1), and Article 5, paragraph (1) of the Supplementary Provisions as well as matters required relating to effectuating this Act are provided by Ministry of Justice Order.

Article 11(1)In cases of notification as provided in Article 2, paragraph (1), Article 4, paragraph (1), or Article 5, paragraph (1) of the Supplementary Provisions, a person making a false notification is punishable by not more than one year of imprisonment or a fine of not more than two hundred thousand yen.

(2)The offense of the preceding paragraph is governed by Article 2 of the Penal Code (Act No. 45 of 1907).

Article 1This Act comes into effect as of April 1, 2015

Article 1This Act comes into effect as of April 1, 2022; provided however, that the provisions of Article 26 of the Supplementary Provisions come into effect as of the date of promulgation.

Article 13(1)As of the time this Act comes into effect a person falling under the requirements (excluding the notification to the Minister of Justice) provided for in Article 3, paragraph (1) of the Nationality Act prior to amendment under the preceding Article and 16 years of age or older may acquire Japanese citizenship in accordance with prior laws if it is within two years of the effective date notwithstanding the provisions of Article 3, paragraph (1) of the Nationality Act as amended by the provisions of the preceding Article (referred to below as the "New Nationality Act" in this Article).

(2)The provisions of Article 14, paragraph (1) of the New Nationality Act apply to a person who has become a Japanese citizen with a foreign nationality since the effective date of the Act or was under the age of 20 years when this Act came into effect, and prior laws continue to govern the selection of citizenship by a Japanese citizen with a foreign nationality as of the effective date of this Act and 20 years of age or older.

(3)A Japanese citizen with a foreign nationality at the time this Act comes into effect and 18 years of age or older but under the age of 20 years is deemed to have acquired the Japanese citizenship as well as the foreign nationality as of the effective date of this Act.

(4)A person, who has lost Japanese citizenship pursuant to the provisions of Article 12 of the Nationality Act at the time this Act comes into effect and 16 years of age or older, may acquire Japanese citizenship in accordance with prior laws if it is within two years of the effective date notwithstanding the provisions of Article 17, paragraph (1) of the New Nationality Act.

Article 25The application of the penal provisions remains applicable to an act committed prior to the effective date, and an act committed on or after the effective date in a situation in which the provisions then in force are to remain applicable pursuant to the provisions of Article 13 of the Supplementary Provisions.

Article 26In addition to what are provided for in these Supplementary Provisions, transitional measures necessary for the enforcement of this Act are specified by Cabinet Order.

Article 1This Act comes into effect as of the day specified by Cabinet Order within a period not exceeding one year and six months from the date of promulgation.

Article 6In addition to what is specified in these Supplementary Provisions, any transitional measures necessary for the enforcement of this Act are specified by Cabinet Order.