# 家事事件手続法 / Domestic Relations Case Procedure Act — 第百十八条 (Article 118)

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- Law: 家事事件手続法 (Domestic Relations Case Procedure Act), 平成二十三年法律第五十二号
- English title "Domestic Relations Case Procedure 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: 第百十八条 (Article 118)（手続行為能力） — address `art-118`
- Text in force since: 2026-06-24
- URL (the page that opens at this provision): https://japanlaw.org/en/domestic-relations-case-procedure-act/art-118
- Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/423AC0000000052/art-118
- 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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### 第百十八条（手続行為能力） — (Capacity to Participate in Proceedings)
<sup>caption: Ministry of Justice translation — Japanese Law Translation Database System</sup>
<sup>art-118 · https://japanlaw.org/en/domestic-relations-case-procedure-act/art-118 · https://japanlaw.org/l/423AC0000000052/art-118</sup>

    **第一項**  次に掲げる審判事件（第一号、第四号及び第六号の審判事件を本案とする保全処分についての審判事件を含む。）においては、成年被後見人となるべき者及び成年被後見人は、第十七条第一項において準用する民事訴訟法第三十一条の規定にかかわらず、法定代理人によらずに、自ら手続行為をすることができる。その者が被保佐人又は被補助人（手続行為をすることにつきその補助人の同意を得ることを要するものに限る。）であって、保佐人若しくは保佐監督人又は補助人若しくは補助監督人の同意がない場合も、同様とする。
    <sup>art-118/par-1 · https://japanlaw.org/en/domestic-relations-case-procedure-act/art-118/par-1 · https://japanlaw.org/l/423AC0000000052/art-118/par-1</sup>
    In the following adjudication cases (including adjudication cases for a provisional order sought by designating the adjudication cases set forth in items (i), (iv), and (vi) as cases on the merits), a person who is or is to be an adult under guardianship may participate in proceedings themselves, not through their legal representative, notwithstanding the provisions of Article 31 of the Code of Civil Procedure as applied mutatis mutandis pursuant to Article 17, paragraph (1). The same applies when the person is a person under curatorship or a person under assistance (limited to a person under assistance who is required to obtain consent from the assistant for performing procedural acts) and the person has not obtained consent from the curator or supervisor of the curator or the assistant or supervisor of the assistant:
    <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

      **一**  後見開始の審判事件
      <sup>art-118/par-1/item-1 · https://japanlaw.org/en/domestic-relations-case-procedure-act/art-118/par-1/item-1 · https://japanlaw.org/l/423AC0000000052/art-118/par-1/item-1</sup>
      an adjudication case for the commencement of guardianship;
      <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

      **二**  後見開始の審判の取消しの審判事件（別表第一の二の項の事項についての審判事件をいう。）
      <sup>art-118/par-1/item-2 · https://japanlaw.org/en/domestic-relations-case-procedure-act/art-118/par-1/item-2 · https://japanlaw.org/l/423AC0000000052/art-118/par-1/item-2</sup>
      an adjudication case for the revocation of a ruling of the commencement of guardianship (meaning an adjudication case regarding the matters set forth in Appended Table 1, row (2));
      <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

      **三**  成年後見人の選任の審判事件（別表第一の三の項の事項についての審判事件をいう。）
      <sup>art-118/par-1/item-3 · https://japanlaw.org/en/domestic-relations-case-procedure-act/art-118/par-1/item-3 · https://japanlaw.org/l/423AC0000000052/art-118/par-1/item-3</sup>
      an adjudication case for the appointment of a guardian of an adult (meaning an adjudication case regarding the matters set forth in Appended Table 1, row (3));
      <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

      **四**  成年後見人の解任の審判事件（別表第一の五の項の事項についての審判事件をいう。第百二十七条第一項において同じ。）
      <sup>art-118/par-1/item-4 · https://japanlaw.org/en/domestic-relations-case-procedure-act/art-118/par-1/item-4 · https://japanlaw.org/l/423AC0000000052/art-118/par-1/item-4</sup>
      an adjudication case for the dismissal of a guardian of an adult (meaning an adjudication case regarding the matters set forth in Appended Table 1, row (5); the same applies in Article 127, paragraph (1));
      <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

      **五**  成年後見監督人の選任の審判事件（別表第一の六の項の事項についての審判事件をいう。）
      <sup>art-118/par-1/item-5 · https://japanlaw.org/en/domestic-relations-case-procedure-act/art-118/par-1/item-5 · https://japanlaw.org/l/423AC0000000052/art-118/par-1/item-5</sup>
      an adjudication case for the appointment of a supervisor of a guardian of an adult (meaning an adjudication case regarding the matters set forth in Appended Table 1, row (6));
      <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

      **六**  成年後見監督人の解任の審判事件（別表第一の八の項の事項についての審判事件をいう。第百二十七条第五項において同じ。）
      <sup>art-118/par-1/item-6 · https://japanlaw.org/en/domestic-relations-case-procedure-act/art-118/par-1/item-6 · https://japanlaw.org/l/423AC0000000052/art-118/par-1/item-6</sup>
      an adjudication case for the dismissal of a supervisor of a guardian of an adult (meaning an adjudication case regarding the matters set forth in Appended Table 1, row (8); the same applies in Article 127, paragraph (5));
      <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

      **七**  成年被後見人に関する特別代理人の選任の審判事件（別表第一の十二の項の事項についての審判事件をいう。）
      <sup>art-118/par-1/item-7 · https://japanlaw.org/en/domestic-relations-case-procedure-act/art-118/par-1/item-7 · https://japanlaw.org/l/423AC0000000052/art-118/par-1/item-7</sup>
      an adjudication case for the appointment of a special representative for an adult under guardianship (meaning an adjudication case regarding the matters set forth in Appended Table 1, row (12));
      <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

      **八**  成年被後見人に宛てた郵便物又は民間事業者による信書の送達に関する法律（平成十四年法律第九十九号）第二条第三項に規定する信書便物（以下「郵便物等」という。）の配達の嘱託及びその嘱託の取消し又は変更の審判事件（別表第一の十二の二の項の事項についての審判事件をいう。第百二十三条の二において「成年被後見人に宛てた郵便物等の配達の嘱託等の審判事件」という。）
      <sup>art-118/par-1/item-8 · https://japanlaw.org/en/domestic-relations-case-procedure-act/art-118/par-1/item-8 · https://japanlaw.org/l/423AC0000000052/art-118/par-1/item-8</sup>
      an adjudication case for the commission of delivery of a postal item or a letter item prescribed in Article 2, paragraph (3) of the Act on Correspondence Delivery by Private Business Operators (Act No. 99 of 2002) (hereinafter referred to as a "postal item, etc.") that is addressed to an adult under guardianship, and for the rescission or change of that commission (meaning an adjudication case regarding the matters set forth in Appended Table 1, row (12)-2; referred to as an "adjudication case for the commission of, or the rescission or change of the commission of, delivery of a postal item, etc. addressed to an adult under guardianship" in Article 123-2);
      <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

      **九**  成年後見の事務の監督の審判事件（別表第一の十四の項の事項についての審判事件をいう。）
      <sup>art-118/par-1/item-9 · https://japanlaw.org/en/domestic-relations-case-procedure-act/art-118/par-1/item-9 · https://japanlaw.org/l/423AC0000000052/art-118/par-1/item-9</sup>
      an adjudication case for the supervision of the affairs of the guardianship of an adult (meaning an adjudication case regarding the matters set forth in Appended Table 1, row (14)); and
      <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

      **十**  第三者が成年被後見人に与えた財産の管理に関する処分の審判事件（別表第一の十五の項の事項についての審判事件をいう。第百二十五条第一項及び第二項において同じ。）
      <sup>art-118/par-1/item-10 · https://japanlaw.org/en/domestic-relations-case-procedure-act/art-118/par-1/item-10 · https://japanlaw.org/l/423AC0000000052/art-118/par-1/item-10</sup>
      an adjudication case of a disposition regarding the administration of property offered to an adult under guardianship by a third party (meaning an adjudication case regarding the matters set forth in Appended Table 1, row (15); the same applies in Article 125, paragraphs (1) and (2)).
      <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

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## Cites
- art-118/par-1: 第一号 → 家事事件手続法 第百十八条第一項第一号 (Article 118, paragraph (1), item (i)), art-118/par-1/item-1 — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-118/par-1/item-1 · https://japanlaw.org/l/423AC0000000052/art-118/par-1/item-1
- art-118/par-1: 第四号 → 家事事件手続法 第百十八条第一項第四号 (Article 118, paragraph (1), item (iv)), art-118/par-1/item-4 — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-118/par-1/item-4 · https://japanlaw.org/l/423AC0000000052/art-118/par-1/item-4
- art-118/par-1: 第六号 → 家事事件手続法 第百十八条第一項第六号 (Article 118, paragraph (1), item (vi)), art-118/par-1/item-6 — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-118/par-1/item-6 · https://japanlaw.org/l/423AC0000000052/art-118/par-1/item-6
- art-118/par-1: 第十七条第一項 → 家事事件手続法 第十七条第一項 (Article 17, paragraph (1)), art-17/par-1 — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-17/par-1 · https://japanlaw.org/l/423AC0000000052/art-17/par-1
- art-118/par-1: 民事訴訟法第三十一条 → 民事訴訟法 第三十一条 (Article 31), art-31 — https://japanlaw.org/en/code-of-civil-procedure/art-31 · https://japanlaw.org/l/408AC0000000109/art-31
- art-118/par-1/item-4: 第百二十七条第一項 → 家事事件手続法 第百二十七条第一項 (Article 127, paragraph (1)), art-127/par-1 — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-127/par-1 · https://japanlaw.org/l/423AC0000000052/art-127/par-1
- art-118/par-1/item-6: 第百二十七条第五項 → 家事事件手続法 第百二十七条第五項 (Article 127, paragraph (5)), art-127/par-5 — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-127/par-5 · https://japanlaw.org/l/423AC0000000052/art-127/par-5
- art-118/par-1/item-8: 民間事業者による信書の送達に関する法律（平成十四年法律第九十九号）第二条第三項 → e-Gov law 414AC0000000099, 第二条第三項 (Article 2, paragraph (3)), art-2/par-3 — not held in this collection
- art-118/par-1/item-8: 第百二十三条の二 → 家事事件手続法 第百二十三条の二 (Article 123-2), art-123-2 — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-123-2 · https://japanlaw.org/l/423AC0000000052/art-123-2
- art-118/par-1/item-10: 第百二十五条第一項 → 家事事件手続法 第百二十五条第一項 (Article 125, paragraph (1)), art-125/par-1 — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-125/par-1 · https://japanlaw.org/l/423AC0000000052/art-125/par-1
- art-118/par-1/item-10: 第二項 → 家事事件手続法 第百二十五条第二項 (Article 125, paragraph (2)), art-125/par-2 — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-125/par-2 · https://japanlaw.org/l/423AC0000000052/art-125/par-2

## Cited by

26 provisions cite this one. No official source publishes this direction.

- 家事事件手続法 第十八条第一項（未成年者及び成年被後見人の法定代理人） — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-18/par-1 · https://japanlaw.org/l/423AC0000000052/art-18/par-1
- 家事事件手続法 第二十三条第一項（裁判長による手続代理人の選任等） — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-23/par-1 · https://japanlaw.org/l/423AC0000000052/art-23/par-1
- 家事事件手続法 第百十七条第一項（管轄） — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-117/par-1 · https://japanlaw.org/l/423AC0000000052/art-117/par-1
- 家事事件手続法 第百十八条第一項（手続行為能力） — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-118/par-1 · https://japanlaw.org/l/423AC0000000052/art-118/par-1
- 家事事件手続法 第百二十九条第一項（手続行為能力） — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-129/par-1 · https://japanlaw.org/l/423AC0000000052/art-129/par-1
- 家事事件手続法 第百三十七条第一項（手続行為能力） — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-137/par-1 · https://japanlaw.org/l/423AC0000000052/art-137/par-1
- 家事事件手続法 第百四十八条第二項 — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-148/par-2 · https://japanlaw.org/l/423AC0000000052/art-148/par-2
- 家事事件手続法 第百四十九条第二項 — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-149/par-2 · https://japanlaw.org/l/423AC0000000052/art-149/par-2
- 家事事件手続法 第百五十一条第一項（手続行為能力） — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-151/par-1 · https://japanlaw.org/l/423AC0000000052/art-151/par-1
- 家事事件手続法 第百五十九条第二項 — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-159/par-2 · https://japanlaw.org/l/423AC0000000052/art-159/par-2
- 家事事件手続法 第百六十条第二項 — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-160/par-2 · https://japanlaw.org/l/423AC0000000052/art-160/par-2
- 家事事件手続法 第百六十一条第二項 — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-161/par-2 · https://japanlaw.org/l/423AC0000000052/art-161/par-2
- 家事事件手続法 第百六十一条の二第二項 — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-161-2/par-2 · https://japanlaw.org/l/423AC0000000052/art-161-2/par-2
- 家事事件手続法 第百六十二条第二項 — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-162/par-2 · https://japanlaw.org/l/423AC0000000052/art-162/par-2
- 家事事件手続法 第百六十四条第五項（特別養子縁組の成立の審判事件） — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-164/par-5 · https://japanlaw.org/l/423AC0000000052/art-164/par-5
- 家事事件手続法 第百六十四条の二第四項（特別養子適格の確認の審判事件） — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-164-2/par-4 · https://japanlaw.org/l/423AC0000000052/art-164-2/par-4
- 家事事件手続法 第百六十五条第二項（特別養子縁組の離縁の審判事件） — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-165/par-2 · https://japanlaw.org/l/423AC0000000052/art-165/par-2
- 家事事件手続法 第百六十八条第一項（手続行為能力） — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-168/par-1 · https://japanlaw.org/l/423AC0000000052/art-168/par-1
- 家事事件手続法 第百七十七条第一項（手続行為能力） — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-177/par-1 · https://japanlaw.org/l/423AC0000000052/art-177/par-1
- 家事事件手続法 第百八十八条第二項（推定相続人の廃除の審判事件及び推定相続人の廃除の取消しの審判事件） — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-188/par-2 · https://japanlaw.org/l/423AC0000000052/art-188/par-2
- 家事事件手続法 第二百一条第四項 — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-201/par-4 · https://japanlaw.org/l/423AC0000000052/art-201/par-4
- 家事事件手続法 第二百十八条第一項（手続行為能力） — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-218/par-1 · https://japanlaw.org/l/423AC0000000052/art-218/par-1
- 家事事件手続法 第二百二十七条第一項（手続行為能力） — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-227/par-1 · https://japanlaw.org/l/423AC0000000052/art-227/par-1
- 家事事件手続法 第二百三十二条第二項 — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-232/par-2 · https://japanlaw.org/l/423AC0000000052/art-232/par-2
- 家事事件手続法 第二百三十五条第一項（手続行為能力） — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-235/par-1 · https://japanlaw.org/l/423AC0000000052/art-235/par-1
- 家事事件手続法 第二百四十条第三項 — https://japanlaw.org/en/domestic-relations-case-procedure-act/art-240/par-3 · https://japanlaw.org/l/423AC0000000052/art-240/par-3

---

## Sources

- e-Gov 法令検索, Digital Agency (デジタル庁) — 家事事件手続法 — the text in force from 2026-06-24 (https://laws.e-gov.go.jp/law/423AC0000000052/20260624_508AC0000000045), retrieved 2026-11-05
- Japanese Law Translation Database System, Ministry of Justice (法務省) — Domestic Relations Case Procedure Act — Ministry of Justice translation (https://www.japaneselawtranslation.go.jp/en/laws/view/4512/tb), retrieved 2026-11-05
- This site's parser, version 225 — 家事事件手続法 — structure, counts, cross-references and defined terms, computed 2026-11-05
