# 民法 / Civil Code — 第七百三十四条 (Article 734) - 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: 第七百三十四条 (Article 734)（近親者間の婚姻の禁止） — address `art-734` - Text in force since: 2026-06-24 - URL (the page that opens at this provision): https://japanlaw.org/en/civil-code/art-734 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/129AC0000000089/art-734 - 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. --- ### 第七百三十四条（近親者間の婚姻の禁止） — (Prohibition of Marriage between Close Relatives) caption: Ministry of Justice translation — Japanese Law Translation Database System art-734 · https://japanlaw.org/en/civil-code/art-734 · https://japanlaw.org/l/129AC0000000089/art-734 **第一項** 直系血族又は三親等内の傍系血族の間では、婚姻をすることができない。ただし、養子と養方の傍系血族との間では、この限りでない。 art-734/par-1 · https://japanlaw.org/en/civil-code/art-734/par-1 · https://japanlaw.org/l/129AC0000000089/art-734/par-1 Lineal blood relatives may not marry, nor may collateral blood relatives of up to the third degree of kinship; provided, however that this does not apply with respect to a marriage between an adopted child and a collateral blood relative through adoption. Ministry of Justice translation — Japanese Law Translation Database System **第二項** 第八百十七条の九の規定により親族関係が終了した後も、前項と同様とする。 art-734/par-2 · https://japanlaw.org/en/civil-code/art-734/par-2 · https://japanlaw.org/l/129AC0000000089/art-734/par-2 The preceding paragraph also applies after kinship is terminated pursuant to the provisions of Article 817-9. Ministry of Justice translation — Japanese Law Translation Database System --- ## Cites - art-734/par-2: 第八百十七条の九 → 民法 第八百十七条の九 (Article 817-9), art-817-9 — https://japanlaw.org/en/civil-code/art-817-9 · https://japanlaw.org/l/129AC0000000089/art-817-9 - art-734/par-2: 前項 → 民法 第七百三十四条第一項 (Article 734, paragraph (1)), art-734/par-1 — https://japanlaw.org/en/civil-code/art-734/par-1 · https://japanlaw.org/l/129AC0000000089/art-734/par-1 ## Cited by 3 provisions cite this one. No official source publishes this direction. - 民法 第七百三十四条第二項（近親者間の婚姻の禁止） — https://japanlaw.org/en/civil-code/art-734/par-2 · https://japanlaw.org/l/129AC0000000089/art-734/par-2 - 民法 第七百四十条第一項（婚姻の届出の受理） — https://japanlaw.org/en/civil-code/art-740/par-1 · https://japanlaw.org/l/129AC0000000089/art-740/par-1 - 民法 第七百四十四条第一項（不適法な婚姻の取消し） — https://japanlaw.org/en/civil-code/art-744/par-1 · https://japanlaw.org/l/129AC0000000089/art-744/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 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 - This site's parser, version 190 — 民法 — structure, counts, cross-references and defined terms, computed 2026-10-11