# 民法 / Civil Code — 第七百七十五条 (Article 775)

- 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: 第七百七十五条 (Article 775)（嫡出否認の訴え） — address `art-775`
- Text in force since: 2026-06-24
- URL (the page that opens at this provision): https://japanlaw.org/ja/civil-code/art-775
- Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/129AC0000000089/art-775
- 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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### 第七百七十五条（嫡出否認の訴え） — (Action to Rebut the Presumption of Child in Wedlock)
<sup>caption: Ministry of Justice translation — Japanese Law Translation Database System</sup>
<sup>art-775 · https://japanlaw.org/ja/civil-code/art-775 · https://japanlaw.org/l/129AC0000000089/art-775</sup>

    **第一項**  次の各号に掲げる否認権は、それぞれ当該各号に定める者に対する嫡出否認の訴えによって行う。
    <sup>art-775/par-1 · https://japanlaw.org/ja/civil-code/art-775/par-1 · https://japanlaw.org/l/129AC0000000089/art-775/par-1</sup>
    The rights to rebut the presumption set forth in the following items are exercised through an action to rebut the presumption of the child in wedlock against the person specified respectively in those items.
    <sup>machine translation, not official</sup>

      **一**  父の否認権　子又は親権を行う母
      <sup>art-775/par-1/item-1 · https://japanlaw.org/ja/civil-code/art-775/par-1/item-1 · https://japanlaw.org/l/129AC0000000089/art-775/par-1/item-1</sup>
      the father's right to rebut the presumption: the child or the mother exercising parental authority;
      <sup>machine translation, not official</sup>

      **二**  子の否認権　父
      <sup>art-775/par-1/item-2 · https://japanlaw.org/ja/civil-code/art-775/par-1/item-2 · https://japanlaw.org/l/129AC0000000089/art-775/par-1/item-2</sup>
      the child's right to rebut the presumption: the father;
      <sup>machine translation, not official</sup>

      **三**  母の否認権　父
      <sup>art-775/par-1/item-3 · https://japanlaw.org/ja/civil-code/art-775/par-1/item-3 · https://japanlaw.org/l/129AC0000000089/art-775/par-1/item-3</sup>
      the mother's right to rebut the presumption: the father;
      <sup>machine translation, not official</sup>

      **四**  前夫の否認権　父及び子又は親権を行う母
      <sup>art-775/par-1/item-4 · https://japanlaw.org/ja/civil-code/art-775/par-1/item-4 · https://japanlaw.org/l/129AC0000000089/art-775/par-1/item-4</sup>
      the former husband's right to rebut the presumption: the father and the child or the mother exercising parental authority.
      <sup>machine translation, not official</sup>

    **第二項**  前項第一号又は第四号に掲げる否認権を親権を行う母に対し行使しようとする場合において、親権を行う母がないときは、家庭裁判所は、特別代理人を選任しなければならない。
    <sup>art-775/par-2 · https://japanlaw.org/ja/civil-code/art-775/par-2 · https://japanlaw.org/l/129AC0000000089/art-775/par-2</sup>
    If a right to rebut the presumption set forth in item (i) or (iv) of the preceding paragraph is to be exercised against the mother exercising parental authority and there is no mother exercising parental authority, the family court must appoint a special agent.
    <sup>machine translation, not official</sup>

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## Cites
- art-775/par-2: 前項第一号 → 民法 第七百七十五条第一項第一号 (Article 775, paragraph (1), item (i)), art-775/par-1/item-1 — https://japanlaw.org/ja/civil-code/art-775/par-1/item-1 · https://japanlaw.org/l/129AC0000000089/art-775/par-1/item-1
- art-775/par-2: 第四号 → 民法 第七百七十五条第一項第四号 (Article 775, paragraph (1), item (iv)), art-775/par-1/item-4 — https://japanlaw.org/ja/civil-code/art-775/par-1/item-4 · https://japanlaw.org/l/129AC0000000089/art-775/par-1/item-4

## Cited by

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

- 民法 第七百七十五条第二項（嫡出否認の訴え） — https://japanlaw.org/ja/civil-code/art-775/par-2 · https://japanlaw.org/l/129AC0000000089/art-775/par-2
- 民法 附則第四条第一項（嫡出の否認及び嫡出の承認に関する経過措置） — https://japanlaw.org/ja/civil-code/suppl-5041-102/art-4/par-1 · https://japanlaw.org/l/129AC0000000089/suppl-5041-102/art-4/par-1
- 民法 附則第四条第二項（嫡出の否認及び嫡出の承認に関する経過措置） — https://japanlaw.org/ja/civil-code/suppl-5041-102/art-4/par-2 · https://japanlaw.org/l/129AC0000000089/suppl-5041-102/art-4/par-2
- 民法 附則第四条第三項（嫡出の否認及び嫡出の承認に関する経過措置） — https://japanlaw.org/ja/civil-code/suppl-5041-102/art-4/par-3 · https://japanlaw.org/l/129AC0000000089/suppl-5041-102/art-4/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 2 of 2) (https://www.japaneselawtranslation.go.jp/en/laws/view/4275/tb), 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-20261011T170941-002, translated 2026-10-12
- This site's parser, version 190 — 民法 — structure, counts, cross-references and defined terms, computed 2026-10-11