# 会社法 / Companies Act — 第五条 (Article 5)

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- Law: 会社法 (Companies Act), 平成十七年法律第八十六号
- English title "Companies 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: 第五条 (Article 5)（商行為） — address `art-5`
- Text in force since: 2026-08-12
- URL (the page that opens at this provision): https://japanlaw.org/ja/companies-act/art-5
- Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/417AC0000000086/art-5
- 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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### 第五条（商行為） — (Commercial Transactions)
<sup>caption: Ministry of Justice translation — Japanese Law Translation Database System</sup>
<sup>art-5 · https://japanlaw.org/ja/companies-act/art-5 · https://japanlaw.org/l/417AC0000000086/art-5</sup>

  **第一項**  会社（外国会社を含む。次条第一項、第八条及び第九条において同じ。）がその事業としてする行為及びその事業のためにする行為は、商行為とする。
  <sup>art-5/par-1 · https://japanlaw.org/ja/companies-act/art-5/par-1 · https://japanlaw.org/l/417AC0000000086/art-5/par-1</sup>
  Any act which a company (including a foreign company; the same applies in paragraph (1) of the following Article, Article 8 and Article 9) carries out as its business and any act which it carries out for its business constitute a commercial transaction.
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

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## Cites
- art-5/par-1: 次条第一項 → 会社法 第六条第一項 (Article 6, paragraph (1)), art-6/par-1 — https://japanlaw.org/ja/companies-act/art-6/par-1 · https://japanlaw.org/l/417AC0000000086/art-6/par-1
- art-5/par-1: 第八条 → 会社法 第八条 (Article 8), art-8 — https://japanlaw.org/ja/companies-act/art-8 · https://japanlaw.org/l/417AC0000000086/art-8
- art-5/par-1: 第九条 → 会社法 第九条 (Article 9), art-9 — https://japanlaw.org/ja/companies-act/art-9 · https://japanlaw.org/l/417AC0000000086/art-9

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## Sources

- e-Gov 法令検索, Digital Agency (デジタル庁) — 会社法 — the text in force from 2026-08-12 (https://laws.e-gov.go.jp/law/417AC0000000086/20260812_508AC0000000064), retrieved 2026-09-17
- Japanese Law Translation Database System, Ministry of Justice (法務省) — Companies Act — Ministry of Justice translation (part 1 of 2) (https://www.japaneselawtranslation.go.jp/en/laws/view/4481/tb), retrieved 2026-09-17
- This site's parser, version 223 — 会社法 — structure, counts, cross-references and defined terms, computed 2026-09-17