# 少年法 / Juveniles Act — 第一条 (Supplementary Provisions, Article 1)

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- Law: 少年法 (Juveniles Act), 昭和二十三年法律第百六十八号
- English title "Juveniles Act": Ministry of Justice translation
- Kind: Act — the distinction between 法律 (Act), 政令 (Cabinet Order), 省令 (Ministerial Order) and 条例 (local ordinance) decides who may issue it and what it may say.
- Provision: 第一条 (Supplementary Provisions, Article 1)（施行期日） — address `suppl-4191-68/art-1`
- Text in force since: 2026-06-24
- URL (the page that opens at this provision): https://japanlaw.org/ja/juvenile-act/suppl-4191-68/art-1
- Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/323AC0000000168/suppl-4191-68/art-1
- Every provision below carries its address and both URLs on the line under it.
- Japanese text: e-Gov 法令検索, Digital Agency (デジタル庁). English: as marked on each line below.

Only the Japanese as published by the government has legal effect; the text
below is a copy of it. Every English rendering below is a translation and
says which kind: the Ministry of Justice's translation, or this
site's machine translation, whose model and date the Sources list names.
They are never merged and never substituted for one another.

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### 第一条（施行期日） — Effective Date
<sup>caption: machine translation, not official</sup>
<sup>suppl-4191-68/art-1 · https://japanlaw.org/ja/juvenile-act/suppl-4191-68/art-1 · https://japanlaw.org/l/323AC0000000168/suppl-4191-68/art-1</sup>

**第一項**  この法律は、公布の日から起算して六月を超えない範囲内において政令で定める日から施行する。ただし、次の各号に掲げる規定は、当該各号に定める日から施行する。
<sup>suppl-4191-68/art-1/par-1 · https://japanlaw.org/ja/juvenile-act/suppl-4191-68/art-1/par-1 · https://japanlaw.org/l/323AC0000000168/suppl-4191-68/art-1/par-1</sup>
This Act comes into effect as of the date specified by Cabinet Order within a period not exceeding six months from the date of promulgation; provided, however, that provisions set forth in the following items come into effect on the date prescribed in each item:
<sup>machine translation, not official</sup>

  **一**  略
  <sup>suppl-4191-68/art-1/par-1/item-1 · https://japanlaw.org/ja/juvenile-act/suppl-4191-68/art-1/par-1/item-1 · https://japanlaw.org/l/323AC0000000168/suppl-4191-68/art-1/par-1/item-1</sup>
  Omitted
  <sup>machine translation, not official</sup>

  **二**  第一条（少年法第二十二条の三の見出し中「検察官が関与する場合の」を削り、同条第三項を同条第四項とし、同条第二項中「前項」を「前二項」に改め、同項を同条第三項とし、同条第一項の次に一項を加える改正規定、同法第三十条第四項及び第三十一条第一項の改正規定、同法第三十二条の五の見出しを「（抗告審における国選付添人）」に改め、同条に一項を加える改正規定並びに同法第三十五条第二項の改正規定に限る。）及び第四条（総合法律支援法目次の改正規定、同法第三十条第一項第三号、第三十七条、第三十八条並びに第三十九条の見出し及び同条第一項から第三項までの改正規定並びに同条の次に一条を加える改正規定に限る。）の規定　総合法律支援法附則第一条第二号に掲げる規定の施行の日又はこの法律の施行の日のいずれか遅い日
  <sup>suppl-4191-68/art-1/par-1/item-2 · https://japanlaw.org/ja/juvenile-act/suppl-4191-68/art-1/par-1/item-2 · https://japanlaw.org/l/323AC0000000168/suppl-4191-68/art-1/par-1/item-2</sup>
  the provisions of Article 1 (limited to the provisions amending Article 22-3 of the Juveniles Act that delete "in Cases Where a Public Prosecutor Participates" from its heading, make its paragraph (3) its paragraph (4), amend "the preceding paragraph" in its paragraph (2) to "the preceding two paragraphs", make its paragraph (2) its paragraph (3), and add one paragraph after its first paragraph, the provisions amending Article 30, paragraph (4) and Article 31, paragraph (1) of that Act, the provisions amending Article 32-5 of that Act that amend its heading to "(Court-Appointed Attendants for Second Instance)" and add one paragraph to it, and the provision amending Article 35, paragraph (2) of that Act) and Article 4 (limited to the provision amending the table of contents of the Comprehensive Legal Support Act, the provisions amending Article 30, paragraph (1), item (iii), Article 37, Article 38, and the heading of Article 39 and Article 39, paragraphs (1) through (3) of that Act, and the provision adding one Article after Article 39 of that Act): the later of the date on which the provisions listed in Article 1, item (ii) of the Supplementary Provisions of the Comprehensive Legal Support Act come into effect and the date on which this Act comes into effect.
  <sup>machine translation, not official</sup>

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## Sources

- e-Gov 法令検索, Digital Agency (デジタル庁) — 少年法 — the text in force from 2026-06-24 (https://laws.e-gov.go.jp/law/323AC0000000168/20260624_508AC0000000046), retrieved 2026-11-02
- Japanese Law Translation Database System, Ministry of Justice (法務省) — Juveniles Act — Ministry of Justice translation (https://www.japaneselawtranslation.go.jp/en/laws/view/4827/tb), retrieved 2026-11-02
- claude-sonnet-5-5 — Machine translation, batch juvenile-act-20261102T172711-003, translated 2026-11-03
- claude-sonnet-5-5 — Machine translation, batch juvenile-act-20261102T172711-004, translated 2026-11-03
- claude-sonnet-5-5, corrected on review by claude-opus-5-5 — Machine translation corrected on review, batch juvenile-act-20261102T172711-004, translated 2026-11-03
- This site's parser, version 223 — 少年法 — structure, counts, cross-references and defined terms, computed 2026-11-02