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Juveniles Act

少年法(しょうねんほう)

Chapter III Juvenile Criminal Cases (Articles 40 to 46)

The law as Act Partially Amending the Code of Criminal Procedure, etc. to Respond to Advances in Information and Communications Technology, etc. (Act No. 39 of 2025) leaves it, with the words it changes marked.

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Chapter III Juvenile Criminal Cases第三章 少年の刑事事件

Section 1 General Rules第一節 通則

Article 40第四十条

Governing Rules(準拠法例)
Article 40, paragraph (1)

In addition to what is provided for in this Act, juvenile criminal cases are governed by the same rules as regular criminal cases.

少年の刑事事件については、この法律で定めるものの外、一般の例による。

Section 2 Procedure第二節 手続

Article 41第四十一条

Referral by a Judicial Police Officer(司法警察員の送致)
Article 41, paragraph (1)

If a judicial police officer, as a result of the investigation of a suspected juvenile case, deems that there is a suspicion of a crime punishable by a fine or less, they must refer the case to a family court. This also applies if a judicial police officer deems that there are grounds for referring the case to a family court for trial and decision, even if there is no suspicion of a crime having been committed.

司法警察員は、少年の被疑事件について捜査を遂げた結果、罰金以下の刑にあたる犯罪の嫌疑があるものと思料するときは、これを家庭裁判所に送致しなければならない。犯罪の嫌疑がない場合でも、家庭裁判所の審判に付すべき事由があると思料するときは、同様である。

Article 42第四十二条

Referral by a Public Prosecutor(検察官の送致)
Article 42, paragraph (1)

If a public prosecutor, as a result of the investigation of a suspected juvenile case, deems that there is a suspicion of a crime, they must refer the case to a family court, except in the case prescribed in the main clause of Article 45, item (v). The same applies if a public prosecutor deems that there are grounds for referring the case to a family court for trial and decision, even if there is no suspicion of a crime having been committed.

検察官は、少年の被疑事件について捜査を遂げた結果、犯罪の嫌疑があるものと思料するときは、第四十五条第五号本文に規定する場合を除いて、これを家庭裁判所に送致しなければならない。犯罪の嫌疑がない場合でも、家庭裁判所の審判に付すべき事由があると思料するときは、同様である。

Article 42, paragraph (2)

In the case of the preceding paragraph, the appointment of a defense counsel for the suspect by a judge, based on the provisions of the Code of Criminal Procedure, becomes ineffective.

前項の場合においては、刑事訴訟法の規定に基づく裁判官による被疑者についての弁護人の選任は、その効力を失う。

Article 43第四十三条

Measures in Lieu of Detention(勾留に代る措置)
Article 43, paragraph (1)

A public prosecutor, in a suspected juvenile case, may file a request for the measures prescribed in Article 17, paragraph (1), with a judge, in lieu of a request for detention; provided, however, that the request for measures prescribed in Article 17, paragraph (1), item (i) must be filed with a judge of the family court.

検察官は、少年の被疑事件においては、裁判官に対して、勾留の請求に代え、第十七条第一項の措置を請求することができる。但し、第十七条第一項第一号の措置は、家庭裁判所の裁判官に対して、これを請求しなければならない。

Article 43, paragraph (2)

Upon receipt of the request prescribed in the preceding paragraph, the judge also has the authority that the family court does for the measures prescribed in Article 17, paragraph (1).

前項の請求を受けた裁判官は、第十七条第一項の措置に関して、家庭裁判所と同一の権限を有する。

Article 43, paragraph (3)

In a suspected juvenile case, the public prosecutor may not file a request for detention with a judge, unless it is unavoidable.

検察官は、少年の被疑事件においては、やむを得ない場合でなければ、裁判官に対して、勾留を請求することはできない。

Article 44第四十四条

Effect of Measures in Lieu of Detention(勾留に代る措置の効力)
Article 44, paragraph (1)

When a judge conducts the measures prescribed in Article 17, paragraph (1), item (i) based on the request pursuant to the provisions of paragraph (1) of the preceding Article, the public prosecutor must immediately file a request to revoke the measures with a judge, if the prosecutor investigates and decides not to refer the case to a family court.

裁判官が前条第一項の請求に基いて第十七条第一項第一号の措置をとつた場合において、検察官は、捜査を遂げた結果、事件を家庭裁判所に送致しないときは、直ちに、裁判官に対して、その措置の取消を請求しなければならない。

Article 44, paragraph (2)

When conducting the measures prescribed in Article 17, paragraph (1), item (ii) upon request pursuant to the provisions of paragraph (1) of the preceding Article, the judge must issue a warrant to do this.

裁判官が前条第一項の請求に基いて第十七条第一項第二号の措置をとるときは、令状を発してこれをしなければならない。

Article 44, paragraph (3)

The measures prescribed in the preceding paragraph remains in effect for ten days from the date on which the request is filed.

前項の措置の効力は、その請求をした日から十日とする。

Article 45第四十五条

Treatment After Referral to a Public Prosecutor(検察官へ送致後の取扱い)
Article 45, paragraph (1)

The following provisions apply when a family court refers a case to a public prosecutor, pursuant to the provisions of Article 20, paragraph (1):

家庭裁判所が、第二十条第一項の規定によつて事件を検察官に送致したときは、次の例による。

Article 45, paragraph (1), item (i)

unless the juvenile is referred to a family court again, the measures prescribed in Article 17, paragraph (1), item (i) becomes ineffective if no prosecution is instituted within ten days of the referral of the case to the public prosecutor. If the prosecution is instituted, the court, by its own authority or by request from a public prosecutor, may revoke the measures at any time;

第十七条第一項第一号の措置は、その少年の事件が再び家庭裁判所に送致された場合を除いて、検察官が事件の送致を受けた日から十日以内に公訴が提起されないときは、その効力を失う。公訴が提起されたときは、裁判所は、検察官の請求により、又は職権をもつて、いつでも、これを取り消すことができる。

Article 45, paragraph (1), item (ii)

if a detention warrant is issued in the course of the measure prescribed in the preceding item, the measure becomes ineffective by this;

前号の措置の継続中、勾留状が発せられたときは、その措置は、これによつて、その効力を失う。

Article 45, paragraph (1), item (iii)

the measure prescribed in item (i) remains effective after the juvenile reaches 20 years of age;

第一号の措置は、その少年が満二十歳に達した後も、引き続きその効力を有する。

Article 45, paragraph (1), item (iv)

the measure prescribed in Article 17, paragraph (1), item (ii) is deemed as detention conducted by a judge, and its period begins from the day of referral to a public prosecutor. In this case, this period may not be extended if a detention warrant has already been issued for the case;

第十七条第一項第二号の措置は、これを裁判官のした勾留とみなし、その期間は、検察官が事件の送致を受けた日から、これを起算する。この場合において、その事件が先に勾留状の発せられた事件であるときは、この期間は、これを延長することができない。

Article 45, paragraph (1), item (v)

if the public prosecutor deems that there is enough suspicion of a crime to institute a prosecution for a case referred to them by a family court, they must institute a prosecution; provided, however, that this does not apply where suspicion of a crime is not sufficient enough to institute a prosecution in part of the referred case, or a new fact that can affect the circumstances of the crime etc. is found, so that prosecution is considered inappropriate. This also applies to when prosecution is considered inappropriate due to the circumstances after the referral;

検察官は、家庭裁判所から送致を受けた事件について、公訴を提起するに足りる犯罪の嫌疑があると思料するときは、公訴を提起しなければならない。ただし、送致を受けた事件の一部について公訴を提起するに足りる犯罪の嫌疑がないか、又は犯罪の情状等に影響を及ぼすべき新たな事情を発見したため、訴追を相当でないと思料するときは、この限りでない。送致後の情況により訴追を相当でないと思料するときも、同様である。

Article 45, paragraph (1), item (vi)

the attendant who is an attorney-at-law appointed pursuant to the provisions of Article 10, paragraph (1) is deemed to be the defense counsel;

第十条第一項の規定により選任された弁護士である付添人は、これを弁護人とみなす。

Article 45, paragraph (1), item (vii)

if the measures prescribed in Article 17, paragraph (1), item (ii) are deemed as detention, conducted by a judge pursuant to the provisions of item (iv), a detention warrant is deemed as having been issued and the provisions in the Code of Criminal Procedure for appointment of a defense counsel for the suspect by a judge apply to the case.

第四号の規定により第十七条第一項第二号の措置が裁判官のした勾留とみなされた場合には、勾留状が発せられているものとみなして、刑事訴訟法中、裁判官による被疑者についての弁護人の選任に関する規定を適用する。

Article 45-2第四十五条の二

Article 45-2, paragraph (1)

The provisions of items (i) through (iv), and (vii) of the preceding Article apply mutatis mutandis to when a family court refers the case to a public prosecutor pursuant to the provisions in Article 19, paragraph (2) or in Article 23 paragraph (3).

前条第一号から第四号まで及び第七号の規定は、家庭裁判所が、第十九条第二項又は第二十三条第三項の規定により、事件を検察官に送致した場合に準用する。

Article 45-3第四十五条の三

Bearing of Court Costs(訴訟費用の負担)
Article 45-3, paragraph (1)

If a family court makes the ruling prescribed in Article 23, paragraph (2), or in Article 24, paragraph (1), regarding a case in which a judge assigns a defense counsel, in advance, for the suspect, the provisions of the Code of Criminal Procedure concerning the bearing of court costs apply mutatis mutandis. In this case, the term "render a sentence" in Article 181, paragraphs (1) and (2) in that Code is replaced by "give a ruling on disposition for rehabilitation of an adjudicated delinquent".

家庭裁判所が、先に裁判官により被疑者のため弁護人が付された事件について第二十三条第二項又は第二十四条第一項の決定をするときは、刑事訴訟法中、訴訟費用の負担に関する規定を準用する。この場合において、同法第百八十一条第一項及び第二項中「刑の言渡」とあるのは、「保護処分の決定」と読み替えるものとする。

Article 45-3, paragraph (2)

In a case in which a family court decides to order the juvenile to bear the court costs, a public prosecutor may inspect and copy the records and evidence of the case to the extent that is necessary to enforce the court decision, as prescribed by the Rules of the Supreme Court.

検察官は、家庭裁判所が少年に訴訟費用の負担を命ずる裁判をした事件について、その裁判を執行するため必要な限度で、最高裁判所規則の定めるところにより、事件の記録及び証拠物を閲覧し、及び謄写することができる。

Article 46第四十六条

Effect of Disposition for Rehabilitation of an Adjudicated Delinquent(保護処分等の効力)
Article 46, paragraph (1)

If a disposition for rehabilitation of an adjudicated delinquent, as prescribed in Article 24, paragraph (1), has been made against a juvenile who has committed a crime, the case for which a trial and decision have been concluded may not be criminally prosecuted or be subjected to a trial and decision in a family court.

罪を犯した少年に対して第二十四条第一項の保護処分がなされたときは、審判を経た事件について、刑事訴追をし、又は家庭裁判所の審判に付することができない。

Article 46, paragraph (2)

If a ruling referred to in Article 22-2, paragraph (1) has been given to a case, and the ruling not to subject a juvenile to disposition for rehabilitation of an adjudicated delinquent becomes final and binding on the case on which the ruling referred to in that paragraph has been given, on the ground that there are no grounds to subject the juvenile to a trial and decision, or that it is not necessary to subject the juvenile to the disposition for rehabilitation of an adjudicated delinquent, the provisions of the preceding paragraph apply.

第二十二条の二第一項の決定がされた場合において、同項の決定があつた事件につき、審判に付すべき事由の存在が認められないこと又は保護処分に付する必要がないことを理由とした保護処分に付さない旨の決定が確定したときは、その事件についても、前項と同様とする。

Article 46, paragraph (3)

The provisions of paragraph (1) do not apply to the case in which a ruling to revoke a disposition for rehabilitation of an adjudicated delinquent pursuant to the provisions of Article 27-2, paragraph (1) has become final and binding; provided, however, that this does not apply to the case, if a ruling as prescribed in Article 22-2, paragraph (1) that is to be governed by the provisions of Article 27-2, paragraph (6) is given, and the disposition is revoked on the grounds that there is no reason to subject a juvenile to a trial and decision.

第一項の規定は、第二十七条の二第一項の規定による保護処分の取消しの決定が確定した事件については、適用しない。ただし、当該事件につき同条第六項の規定によりその例によることとされる第二十二条の二第一項の決定がされた場合であつて、その取消しの理由が審判に付すべき事由の存在が認められないことであるときは、この限りでない。

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