# 仲裁法 / Arbitration Act — 第二十三条 (Article 23) This is the Markdown twin of https://japanlaw.org/en/arbitration-act/art-23. Every law, and how to address a provision: https://japanlaw.org/llms.txt. The same laws as MCP tools (no sign-in): https://japanlaw.org/mcp. - Law: 仲裁法 (Arbitration Act), 平成十五年法律第百三十八号 - English title "Arbitration 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: 第二十三条 (Article 23)（自己の仲裁権限の有無についての判断） — address `art-23` - Text in force since: 2026-05-21 - URL (the page that opens at this provision): https://japanlaw.org/en/arbitration-act/art-23 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/415AC0000000138/art-23 - 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. --- ### 第二十三条（自己の仲裁権限の有無についての判断） — (Competence of Arbitral Tribunal to Rule on Its Jurisdiction) caption: Ministry of Justice translation — Japanese Law Translation Database System art-23 · https://japanlaw.org/en/arbitration-act/art-23 · https://japanlaw.org/l/415AC0000000138/art-23 **第一項** 仲裁廷は、仲裁合意の存否又は効力に関する主張についての判断その他自己の仲裁権限（仲裁手続における審理及び仲裁判断を行う権限をいう。以下この条において同じ。）の有無についての判断を示すことができる。 art-23/par-1 · https://japanlaw.org/en/arbitration-act/art-23/par-1 · https://japanlaw.org/l/415AC0000000138/art-23/par-1 An arbitral tribunal may rule on its own jurisdiction (meaning the authority to carry out proceedings in an arbitration procedure and to make an arbitral award; hereinafter the same applies in this Article), including a ruling on any allegations on the existence or validity of an arbitration agreement. Ministry of Justice translation with a slip corrected by this site — not the Ministry's text; the Ministry printed: "An arbitral tribunal may rule on its own jurisdiction (meaning the authority to carry out proceedings in an arbitration procedure and to make an arbitral award; hereinafter the applies in this Article), including a ruling on any allegations on the existence or validity of an arbitration agreement." — https://www.japaneselawtranslation.go.jp/en/laws/view/4440/tb **第二項** 仲裁手続において、仲裁廷が仲裁権限を有しない旨の主張は、その原因となる事由が仲裁手続の進行中に生じた場合にあってはその後速やかに、その他の場合にあっては本案についての最初の主張書面の提出の時（口頭審理において口頭で最初に本案についての主張をする時を含む。）までに、しなければならない。ただし、仲裁権限を有しない旨の主張の遅延について正当な理由があると仲裁廷が認めるときは、この限りでない。 art-23/par-2 · https://japanlaw.org/en/arbitration-act/art-23/par-2 · https://japanlaw.org/l/415AC0000000138/art-23/par-2 In an arbitration procedure, an allegation that an arbitral tribunal does not have jurisdiction must be made promptly after the occurrence of the cause for the allegation if the cause has occurred during the course of the arbitration procedure, or, in any other case, an allegation must be made by the time of submission of the first written allegation on the merits (including the time of orally making the first allegation on the merits in oral hearings); provided, however, that this does not apply when the arbitral tribunal finds justifiable grounds for a delay in making an allegation that the arbitral tribunal does not have jurisdiction. Ministry of Justice translation — Japanese Law Translation Database System **第三項** 当事者は、仲裁人を選任し、又は仲裁人の選任について推薦その他これに類する関与をした場合であっても、前項の主張をすることができる。 art-23/par-3 · https://japanlaw.org/en/arbitration-act/art-23/par-3 · https://japanlaw.org/l/415AC0000000138/art-23/par-3 A party may make the allegation referred to in the preceding paragraph even if the party has appointed an arbitrator, or has made a recommendation for an arbitrator or otherwise similarly participated in the appointment of an arbitrator. Ministry of Justice translation — Japanese Law Translation Database System **第四項** 仲裁廷は、適法な第二項の主張があったときは、次の各号に掲げる区分に応じ、それぞれ当該各号に定める決定又は仲裁判断により、当該主張に対する判断を示さなければならない。 art-23/par-4 · https://japanlaw.org/en/arbitration-act/art-23/par-4 · https://japanlaw.org/l/415AC0000000138/art-23/par-4 If the allegation referred to in paragraph (2) has been made lawfully, an arbitral tribunal must rule on the allegation by the decision or arbitral award provided for in the following items for each category of ruling set forth in those items: Ministry of Justice translation — Japanese Law Translation Database System **一** 自己が仲裁権限を有する旨の判断を示す場合　仲裁判断前の独立の決定又は仲裁判断 art-23/par-4/item-1 · https://japanlaw.org/en/arbitration-act/art-23/par-4/item-1 · https://japanlaw.org/l/415AC0000000138/art-23/par-4/item-1 when ruling that the arbitral tribunal has jurisdiction:by an independent decision made before an arbitral award or by an arbitral award; and Ministry of Justice translation — Japanese Law Translation Database System **二** 自己が仲裁権限を有しない旨の判断を示す場合　仲裁手続の終了決定 art-23/par-4/item-2 · https://japanlaw.org/en/arbitration-act/art-23/par-4/item-2 · https://japanlaw.org/l/415AC0000000138/art-23/par-4/item-2 when ruling that the arbitral tribunal does not have jurisdiction:by a decision to end the arbitration procedure. Ministry of Justice translation — Japanese Law Translation Database System **第五項** 仲裁廷が仲裁判断前の独立の決定において自己が仲裁権限を有する旨の判断を示したときは、当事者は、当該決定の通知を受けた日から三十日以内に、裁判所に対し、当該仲裁廷が仲裁権限を有するかどうかについての判断を求める申立てをすることができる。この場合において、当該申立てに係る事件が裁判所に係属する場合であっても、当該仲裁廷は、仲裁手続を続行し、かつ、仲裁判断をすることができる。 art-23/par-5 · https://japanlaw.org/en/arbitration-act/art-23/par-5 · https://japanlaw.org/l/415AC0000000138/art-23/par-5 If an arbitral tribunal has ruled that it has jurisdiction in its independent decision made before an arbitral award, a party may petition a court to rule on whether the arbitral tribunal has jurisdiction within 30 days of receipt of notice of the decision. In this case, even if a case related to said petition is pending in the court, the arbitral tribunal may continue the arbitration procedure and make an arbitral award. Ministry of Justice translation — Japanese Law Translation Database System --- ## Cites - art-23/par-1: この条 → 仲裁法 第二十三条 (Article 23), art-23 — https://japanlaw.org/en/arbitration-act/art-23 · https://japanlaw.org/l/415AC0000000138/art-23 - art-23/par-3: 前項 → 仲裁法 第二十三条第二項 (Article 23, paragraph (2)), art-23/par-2 — https://japanlaw.org/en/arbitration-act/art-23/par-2 · https://japanlaw.org/l/415AC0000000138/art-23/par-2 - art-23/par-4: 第二項 → 仲裁法 第二十三条第二項 (Article 23, paragraph (2)), art-23/par-2 — https://japanlaw.org/en/arbitration-act/art-23/par-2 · https://japanlaw.org/l/415AC0000000138/art-23/par-2 ## Cited by 4 provisions cite this one. No official source publishes this direction. - 仲裁法 第二十三条第一項（自己の仲裁権限の有無についての判断） — https://japanlaw.org/en/arbitration-act/art-23/par-1 · https://japanlaw.org/l/415AC0000000138/art-23/par-1 - 仲裁法 第二十三条第三項（自己の仲裁権限の有無についての判断） — https://japanlaw.org/en/arbitration-act/art-23/par-3 · https://japanlaw.org/l/415AC0000000138/art-23/par-3 - 仲裁法 第二十三条第四項（自己の仲裁権限の有無についての判断） — https://japanlaw.org/en/arbitration-act/art-23/par-4 · https://japanlaw.org/l/415AC0000000138/art-23/par-4 - 仲裁法 第四十条第二項（仲裁手続の終了） — https://japanlaw.org/en/arbitration-act/art-40/par-2 · https://japanlaw.org/l/415AC0000000138/art-40/par-2 --- ## Sources - claude-opus-5-5 — Corrections to the Ministry of Justice's English of paragraphs, written 2026-11-02 - e-Gov 法令検索, Digital Agency (デジタル庁) — 仲裁法 — the text in force from 2026-05-21 (https://laws.e-gov.go.jp/law/415AC0000000138/20260521_504AC0000000048), retrieved 2026-11-01 - Japanese Law Translation Database System, Ministry of Justice (法務省) — Arbitration Act (仲裁法), Article 23, paragraph (1) — the Ministry of Justice's English as printed (https://www.japaneselawtranslation.go.jp/en/laws/view/4440/tb), retrieved 2026-11-01 - Japanese Law Translation Database System, Ministry of Justice (法務省) — Arbitration Act — Ministry of Justice translation (https://www.japaneselawtranslation.go.jp/en/laws/view/4440/tb), retrieved 2026-11-01 - This site's parser, version 219 — 仲裁法 — structure, counts, cross-references and defined terms, computed 2026-11-01