# 会社法 / Companies Act — 第二章 (Part 1, Chapter 2)

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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: 第二章 (Part 1, Chapter 2) — address `pt-1/ch-2`
- Text: the text as amended with effect from 2027-04-01, standing until 2027-07-21 as now scheduled, since the next amendment's day is not fixed — NOT yet in force (revision 20270401_508AC0000000064)
- URL (this text's page, at this provision): https://japanlaw.org/ja/companies-act/amendments/20270401_508AC0000000064/text/pt-1/ch-2
- The same address in the text in force (its wording there may differ): https://japanlaw.org/ja/companies-act/pt-1/ch-2
- Every provision below carries its address and its place on this text's page 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.
The Ministry's English is given only where this text's Japanese is a wording
the Ministry translated — the same as the text in force, or for a text not yet
in force, a wording it translated ahead; every other paragraph's English is
machine translation.

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## 第二章　会社の商号 — Chapter II Trade Name of Company
<sup>heading: Ministry of Justice translation — Japanese Law Translation Database System</sup>
<sup>pt-1/ch-2 · https://japanlaw.org/ja/companies-act/amendments/20270401_508AC0000000064/text/pt-1/ch-2</sup>

### 第六条（商号） — (Trade Name)
<sup>caption: Ministry of Justice translation — Japanese Law Translation Database System</sup>
<sup>art-6 · https://japanlaw.org/ja/companies-act/amendments/20270401_508AC0000000064/text/pt-1/ch-2#art-6</sup>

  **第一項**  会社は、その名称を商号とする。
  <sup>art-6/par-1 · https://japanlaw.org/ja/companies-act/amendments/20270401_508AC0000000064/text/pt-1/ch-2#art-6/par-1</sup>
  The name of a company is its trade name.
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

  **第二項**  会社は、株式会社、合名会社、合資会社又は合同会社の種類に従い、それぞれその商号中に株式会社、合名会社、合資会社又は合同会社という文字を用いなければならない。
  <sup>art-6/par-2 · https://japanlaw.org/ja/companies-act/amendments/20270401_508AC0000000064/text/pt-1/ch-2#art-6/par-2</sup>
  A company must use the Japanese characters "株式会社"(pronounced "kabushiki-kaisha", meaning "stock company"),"合名会社"(pronounced" gomei-kaisha" meaning "general partnership company"), "合資会社"(pronounced "goushi-kaisha" meaning "limited partnership company") or " 合同会社" (pronounced "goudou-kaisha", meaning "limited liability company") in its trade name, respectively for stock company, general partnership company, limited partnership company or limited liability company.
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

  **第三項**  会社は、その商号中に、他の種類の会社であると誤認されるおそれのある文字を用いてはならない。
  <sup>art-6/par-3 · https://japanlaw.org/ja/companies-act/amendments/20270401_508AC0000000064/text/pt-1/ch-2#art-6/par-3</sup>
  A company may not use in its trade name any word which makes it likely that the company may be mistaken for a different form of company.
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

### 第七条（会社と誤認させる名称等の使用の禁止） — (No Use of Name Which Is Likely to Be Mistaken for a Company)
<sup>caption: Ministry of Justice translation — Japanese Law Translation Database System</sup>
<sup>art-7 · https://japanlaw.org/ja/companies-act/amendments/20270401_508AC0000000064/text/pt-1/ch-2#art-7</sup>

  **第一項**  会社でない者は、その名称又は商号中に、会社であると誤認されるおそれのある文字を用いてはならない。
  <sup>art-7/par-1 · https://japanlaw.org/ja/companies-act/amendments/20270401_508AC0000000064/text/pt-1/ch-2#art-7/par-1</sup>
  No person who is not a company may use in its name or trade name any word which makes it likely that the person may be mistaken as a company.
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

### 第八条
<sup>art-8 · https://japanlaw.org/ja/companies-act/amendments/20270401_508AC0000000064/text/pt-1/ch-2#art-8</sup>

  **第一項**  何人も、不正の目的をもって、他の会社であると誤認されるおそれのある名称又は商号を使用してはならない。
  <sup>art-8/par-1 · https://japanlaw.org/ja/companies-act/amendments/20270401_508AC0000000064/text/pt-1/ch-2#art-8/par-1</sup>
  No person may use, with a wrongful purpose, any name or trade name which makes it likely that the person may be mistaken for the other company.
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

  **第二項**  前項の規定に違反する名称又は商号の使用によって営業上の利益を侵害され、又は侵害されるおそれがある会社は、その営業上の利益を侵害する者又は侵害するおそれがある者に対し、その侵害の停止又は予防を請求することができる。
  <sup>art-8/par-2 · https://japanlaw.org/ja/companies-act/amendments/20270401_508AC0000000064/text/pt-1/ch-2#art-8/par-2</sup>
  Any company the enterprise interests of which have been, or are likely to be, infringed by the use of any name or trade name in violation of the provisions of the preceding paragraph may seek an injunction suspending or preventing the infringement against the person who infringes, or is likely to infringe, those enterprise interests.
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

### 第九条（自己の商号の使用を他人に許諾した会社の責任） — (Liability of Companies Permitting Others to Use Its Trade Name)
<sup>caption: Ministry of Justice translation — Japanese Law Translation Database System</sup>
<sup>art-9 · https://japanlaw.org/ja/companies-act/amendments/20270401_508AC0000000064/text/pt-1/ch-2#art-9</sup>

  **第一項**  自己の商号を使用して事業又は営業を行うことを他人に許諾した会社は、当該会社が当該事業を行うものと誤認して当該他人と取引をした者に対し、当該他人と連帯して、当該取引によって生じた債務を弁済する責任を負う。
  <sup>art-9/par-1 · https://japanlaw.org/ja/companies-act/amendments/20270401_508AC0000000064/text/pt-1/ch-2#art-9/par-1</sup>
  Any company that has permitted others to carry out business or engage in any enterprise by using the company's own trade name is jointly and severally liable, regarding any person who has transacted with relevant others based on misunderstanding that relevant company carries out relevant business, for the performance of any obligations which may arise from relevant transaction.
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

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## Cites
- art-8/par-2: 前項 → 会社法 第八条第一項 (Article 8, paragraph (1)), art-8/par-1 — https://japanlaw.org/ja/companies-act/amendments/20270401_508AC0000000064/text/pt-1/ch-2#art-8/par-1

---

## Sources

- e-Gov 法令検索, Digital Agency (デジタル庁) — 会社法 — the text as 令和八年法律第六十四号 leaves it, from 2027-04-01 (https://laws.e-gov.go.jp/law/417AC0000000086/20270401_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