# 民法 / Civil Code — 第一条 (Supplementary Provisions, Article 1)

- Law: 民法 (Civil Code), 明治二十九年法律第八十九号
- English title "Civil Code": 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-4291-44/art-1`
- Text in force since: 2026-06-24
- URL (the page that opens at this provision): https://japanlaw.org/en/civil-code/suppl-4291-44/art-1
- Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/129AC0000000089/suppl-4291-44/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-4291-44/art-1 · https://japanlaw.org/en/civil-code/suppl-4291-44/art-1 · https://japanlaw.org/l/129AC0000000089/suppl-4291-44/art-1</sup>

**第一項**  この法律は、公布の日から起算して三年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-4291-44/art-1/par-1 · https://japanlaw.org/en/civil-code/suppl-4291-44/art-1/par-1 · https://japanlaw.org/l/129AC0000000089/suppl-4291-44/art-1/par-1</sup>
This Act comes into effect as of the date specified by Cabinet Order within a period not exceeding 3 years from the date of promulgation; provided, however, that the provisions set forth in the following items come into effect as of the dates specified respectively in those items.
<sup>machine translation, not official</sup>

  **一**  附則第三十七条の規定　公布の日
  <sup>suppl-4291-44/art-1/par-1/item-1 · https://japanlaw.org/en/civil-code/suppl-4291-44/art-1/par-1/item-1 · https://japanlaw.org/l/129AC0000000089/suppl-4291-44/art-1/par-1/item-1</sup>
  the provisions of Article 37 of the Supplementary Provisions: the date of promulgation;
  <sup>machine translation, not official</sup>

  **二**  附則第三十三条第三項の規定　公布の日から起算して一年を超えない範囲内において政令で定める日
  <sup>suppl-4291-44/art-1/par-1/item-2 · https://japanlaw.org/en/civil-code/suppl-4291-44/art-1/par-1/item-2 · https://japanlaw.org/l/129AC0000000089/suppl-4291-44/art-1/par-1/item-2</sup>
  the provisions of Article 33, paragraph (3) of the Supplementary Provisions: the date specified by Cabinet Order within a period not exceeding one year from the date of promulgation;
  <sup>machine translation, not official</sup>

  **三**  附則第二十一条第二項及び第三項の規定　公布の日から起算して二年九月を超えない範囲内において政令で定める日
  <sup>suppl-4291-44/art-1/par-1/item-3 · https://japanlaw.org/en/civil-code/suppl-4291-44/art-1/par-1/item-3 · https://japanlaw.org/l/129AC0000000089/suppl-4291-44/art-1/par-1/item-3</sup>
  the provisions of Article 21, paragraphs (2) and (3) of the Supplementary Provisions: the date specified by Cabinet Order within a period not exceeding two years and nine months from the date of promulgation.
  <sup>machine translation, not official</sup>

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## Cites
- suppl-4291-44/art-1/par-1/item-1: 附則第三十七条 → 民法 附則第三十七条 (Supplementary Provisions, Article 37), suppl-4291-44/art-37 — https://japanlaw.org/en/civil-code/suppl-4291-44/art-37 · https://japanlaw.org/l/129AC0000000089/suppl-4291-44/art-37
- suppl-4291-44/art-1/par-1/item-2: 附則第三十三条第三項 → 民法 附則第三十三条第三項 (Supplementary Provisions, Article 33, paragraph (3)), suppl-4291-44/art-33/par-3 — https://japanlaw.org/en/civil-code/suppl-4291-44/art-33/par-3 · https://japanlaw.org/l/129AC0000000089/suppl-4291-44/art-33/par-3
- suppl-4291-44/art-1/par-1/item-3: 附則第二十一条第二項 → 民法 附則第二十一条第二項 (Supplementary Provisions, Article 21, paragraph (2)), suppl-4291-44/art-21/par-2 — https://japanlaw.org/en/civil-code/suppl-4291-44/art-21/par-2 · https://japanlaw.org/l/129AC0000000089/suppl-4291-44/art-21/par-2
- suppl-4291-44/art-1/par-1/item-3: 第三項 → 民法 附則第二十一条第三項 (Supplementary Provisions, Article 21, paragraph (3)), suppl-4291-44/art-21/par-3 — https://japanlaw.org/en/civil-code/suppl-4291-44/art-21/par-3 · https://japanlaw.org/l/129AC0000000089/suppl-4291-44/art-21/par-3

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## Sources

- e-Gov 法令検索, Digital Agency (デジタル庁) — 民法 — the text in force from 2026-06-24 (https://laws.e-gov.go.jp/law/129AC0000000089/20260624_508AC0000000045), retrieved 2026-10-11
- Japanese Law Translation Database System, Ministry of Justice (法務省) — Civil Code — Ministry of Justice translation (part 1 of 2) (https://www.japaneselawtranslation.go.jp/en/laws/view/4848/tb), retrieved 2026-10-11
- claude-sonnet-5-5 — Machine translation, batch civil-code-20261011T170941-020, translated 2026-10-12
- This site's parser, version 190 — 民法 — structure, counts, cross-references and defined terms, computed 2026-10-11