# 民法 / Civil Code — 第九十三条 (Article 93) - 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: 第九十三条 (Article 93)（心裡留保） — address `art-93` - Text in force since: 2026-06-24 - URL (the page that opens at this provision): https://japanlaw.org/ja/civil-code/art-93 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/129AC0000000089/art-93 - 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. --- ### 第九十三条（心裡留保） — (Mental Reservations) caption: Ministry of Justice translation — Japanese Law Translation Database System art-93 · https://japanlaw.org/ja/civil-code/art-93 · https://japanlaw.org/l/129AC0000000089/art-93 **第一項** 意思表示は、表意者がその真意ではないことを知ってしたときであっても、そのためにその効力を妨げられない。ただし、相手方がその意思表示が表意者の真意ではないことを知り、又は知ることができたときは、その意思表示は、無効とする。 art-93/par-1 · https://japanlaw.org/ja/civil-code/art-93/par-1 · https://japanlaw.org/l/129AC0000000089/art-93/par-1 The validity of a manifestation of intention is not impaired even if the person making it does so while knowing that it does not reflect that person's true intention; provided, however, that if the other party knew or could have known that the manifestation was not the true intention of the person who made it, that manifestation of intention is void. Ministry of Justice translation — Japanese Law Translation Database System **第二項** 前項ただし書の規定による意思表示の無効は、善意の第三者に対抗することができない。 art-93/par-2 · https://japanlaw.org/ja/civil-code/art-93/par-2 · https://japanlaw.org/l/129AC0000000089/art-93/par-2 The nullity of a manifestation of intention under the provisions of the proviso to the preceding paragraph may not be duly asserted against a third party in good faith. Ministry of Justice translation — Japanese Law Translation Database System --- ## Cites - art-93/par-2: 前項 → 民法 第九十三条第一項 (Article 93, paragraph (1)), art-93/par-1 — https://japanlaw.org/ja/civil-code/art-93/par-1 · https://japanlaw.org/l/129AC0000000089/art-93/par-1 ## Cited by 6 provisions cite this one. No official source publishes this direction. - 会社法 第五十一条第一項（引受けの無効又は取消しの制限） — https://japanlaw.org/ja/companies-act/art-51/par-1 · https://japanlaw.org/l/417AC0000000086/art-51/par-1 - 会社法 第百二条第五項（設立手続等の特則） — https://japanlaw.org/ja/companies-act/art-102/par-5 · https://japanlaw.org/l/417AC0000000086/art-102/par-5 - 会社法 第二百十一条第一項（引受けの無効又は取消しの制限） — https://japanlaw.org/ja/companies-act/art-211/par-1 · https://japanlaw.org/l/417AC0000000086/art-211/par-1 - 会社法 第七百七十四条の八第一項（株式交付子会社の株式の譲渡しの無効又は取消しの制限） — https://japanlaw.org/ja/companies-act/art-774-8/par-1 · https://japanlaw.org/l/417AC0000000086/art-774-8/par-1 - 民法 第九十三条第二項（心裡留保） — https://japanlaw.org/ja/civil-code/art-93/par-2 · https://japanlaw.org/l/129AC0000000089/art-93/par-2 - 民法 附則第六条第一項（意思表示に関する経過措置） — https://japanlaw.org/ja/civil-code/suppl-4291-44/art-6/par-1 · https://japanlaw.org/l/129AC0000000089/suppl-4291-44/art-6/par-1 --- ## 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 1 of 2) (https://www.japaneselawtranslation.go.jp/en/laws/view/4848/tb), retrieved 2026-10-11 - This site's parser, version 190 — 民法 — structure, counts, cross-references and defined terms, computed 2026-10-11