# 個人情報の保護に関する法律 / Act on the Protection of Personal Information — 第四十五条 (Article 45) - Law: 個人情報の保護に関する法律 (Act on the Protection of Personal Information), 平成十五年法律第五十七号 - English title "Act on the Protection of Personal Information": 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: 第四十五条 (Article 45)（識別行為の禁止） — address `art-45` - Text in force since: 2026-10-01 - URL (the page that opens at this provision): https://japanlaw.org/ja/personal-information-protection-act/art-45 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/415AC0000000057/art-45 - 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. --- ### 第四十五条（識別行為の禁止） — (Prohibition against Identifying Persons) caption: Ministry of Justice translation — Japanese Law Translation Database System art-45 · https://japanlaw.org/ja/personal-information-protection-act/art-45 · https://japanlaw.org/l/415AC0000000057/art-45 **第一項** 匿名加工情報取扱事業者は、匿名加工情報を取り扱うに当たっては、当該匿名加工情報の作成に用いられた個人情報に係る本人を識別するために、当該個人情報から削除された記述等若しくは個人識別符号若しくは第四十三条第一項若しくは第百十六条第一項（同条第二項において準用する場合を含む。）の規定により行われた加工の方法に関する情報を取得し、又は当該匿名加工情報を他の情報と照合してはならない。 art-45/par-1 · https://japanlaw.org/ja/personal-information-protection-act/art-45/par-1 · https://japanlaw.org/l/415AC0000000057/art-45/par-1 Businesses handling anonymized personal information, when handling anonymized personal information, must neither acquire information relating to identifiers or their equivalent or individual identification codes deleted from the personal information and information relating to methods of processing carried out pursuant to the provisions of Article 43, paragraph (1) or Article 116, paragraph (1) (including cases in which it is applied mutatis mutandis pursuant to Article 116, paragraph (2)), nor collate the anonymized personal information with other information in order to identify a person identifiable by personal information that was used to prepare that anonymized personal information. Ministry of Justice translation — Japanese Law Translation Database System --- ## Cites - art-45/par-1: 第四十三条第一項 → 個人情報の保護に関する法律 第四十三条第一項 (Article 43, paragraph (1)), art-43/par-1 — https://japanlaw.org/ja/personal-information-protection-act/art-43/par-1 · https://japanlaw.org/l/415AC0000000057/art-43/par-1 - art-45/par-1: 第百十六条第一項 → 個人情報の保護に関する法律 第百十六条第一項 (Article 116, paragraph (1)), art-116/par-1 — https://japanlaw.org/ja/personal-information-protection-act/art-116/par-1 · https://japanlaw.org/l/415AC0000000057/art-116/par-1 - art-45/par-1: 同条第二項 → 個人情報の保護に関する法律 第百十六条第二項 (Article 116, paragraph (2)), art-116/par-2 — https://japanlaw.org/ja/personal-information-protection-act/art-116/par-2 · https://japanlaw.org/l/415AC0000000057/art-116/par-2 ## Cited by 2 provisions cite this one. No official source publishes this direction. - 個人情報の保護に関する法律 第百四十八条第一項（勧告及び命令） — https://japanlaw.org/ja/personal-information-protection-act/art-148/par-1 · https://japanlaw.org/l/415AC0000000057/art-148/par-1 - 個人情報の保護に関する法律 第百四十八条第三項（勧告及び命令） — https://japanlaw.org/ja/personal-information-protection-act/art-148/par-3 · https://japanlaw.org/l/415AC0000000057/art-148/par-3 --- ## Sources - e-Gov 法令検索, Digital Agency (デジタル庁) — 個人情報の保護に関する法律 — the text in force from 2026-10-01 (https://laws.e-gov.go.jp/law/415AC0000000057/20261001_507AC0000000070), retrieved 2026-10-10 - Japanese Law Translation Database System, Ministry of Justice (法務省) — Act on the Protection of Personal Information — Ministry of Justice translation (https://www.japaneselawtranslation.go.jp/en/laws/view/4241/tb), retrieved 2026-10-10 - This site's parser, version 190 — 個人情報の保護に関する法律 — structure, counts, cross-references and defined terms, computed 2026-10-10