# 民法 / Civil Code — 第百八条 (Article 108) - 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: 第百八条 (Article 108)（自己契約及び双方代理等） — address `art-108` - Text in force since: 2026-06-24 - URL (the page that opens at this provision): https://japanlaw.org/en/civil-code/art-108 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/129AC0000000089/art-108 - 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. --- ### 第百八条（自己契約及び双方代理等） — (Self-Contracting and Representation of Both Parties) caption: Ministry of Justice translation — Japanese Law Translation Database System art-108 · https://japanlaw.org/en/civil-code/art-108 · https://japanlaw.org/l/129AC0000000089/art-108 **第一項** 同一の法律行為について、相手方の代理人として、又は当事者双方の代理人としてした行為は、代理権を有しない者がした行為とみなす。ただし、債務の履行及び本人があらかじめ許諾した行為については、この限りでない。 art-108/par-1 · https://japanlaw.org/en/civil-code/art-108/par-1 · https://japanlaw.org/l/129AC0000000089/art-108/par-1 An act that a person performs as an agent of the counterparty or as agent of both parties for the same juridical act is deemed to be an act performed by a person without authority to represent; provided, however, that this does not apply to the performance of an obligation or to an act authorized by the principal in advance. Ministry of Justice translation — Japanese Law Translation Database System **第二項** 前項本文に規定するもののほか、代理人と本人との利益が相反する行為については、代理権を有しない者がした行為とみなす。ただし、本人があらかじめ許諾した行為については、この限りでない。 art-108/par-2 · https://japanlaw.org/en/civil-code/art-108/par-2 · https://japanlaw.org/l/129AC0000000089/art-108/par-2 Beyond what is provided for in the main clause of the preceding paragraph, an act for which the interest of the agent conflicts with the interest of the principal is deemed to be an act performed by a person without authority to represent; provided, however, that this does not apply to an act authorized by the principal in advance. Ministry of Justice translation — Japanese Law Translation Database System --- ## Cites - art-108/par-2: 前項 → 民法 第百八条第一項 (Article 108, paragraph (1)), art-108/par-1 — https://japanlaw.org/en/civil-code/art-108/par-1 · https://japanlaw.org/l/129AC0000000089/art-108/par-1 ## Cited by 5 provisions cite this one. No official source publishes this direction. - 会社法 第三百五十六条第二項（競業及び利益相反取引の制限） — https://japanlaw.org/en/companies-act/art-356/par-2 · https://japanlaw.org/l/417AC0000000086/art-356/par-2 - 会社法 第四百三十条の二第七項（補償契約） — https://japanlaw.org/en/companies-act/art-430-2/par-7 · https://japanlaw.org/l/417AC0000000086/art-430-2/par-7 - 会社法 第四百三十条の三第三項（役員等のために締結される保険契約） — https://japanlaw.org/en/companies-act/art-430-3/par-3 · https://japanlaw.org/l/417AC0000000086/art-430-3/par-3 - 会社法 第五百九十五条第二項（利益相反取引の制限） — https://japanlaw.org/en/companies-act/art-595/par-2 · https://japanlaw.org/l/417AC0000000086/art-595/par-2 - 民法 第百八条第二項（自己契約及び双方代理等） — https://japanlaw.org/en/civil-code/art-108/par-2 · https://japanlaw.org/l/129AC0000000089/art-108/par-2 --- ## 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