# 個人情報の保護に関する法律 / Act on the Protection of Personal Information — 第四条 (Supplementary Provisions, Article 4)

- 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: 第四条 (Supplementary Provisions, Article 4)（罰則に関する経過措置） — address `suppl-5051-47/art-4`
- Text in force since: 2026-10-01
- URL (the page that opens at this provision): https://japanlaw.org/en/personal-information-protection-act/suppl-5051-47/art-4
- Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/415AC0000000057/suppl-5051-47/art-4
- 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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### 第四条（罰則に関する経過措置） — Transitional Measures Concerning Penal Provisions
<sup>caption: machine translation, not official</sup>
<sup>suppl-5051-47/art-4 · https://japanlaw.org/en/personal-information-protection-act/suppl-5051-47/art-4 · https://japanlaw.org/l/415AC0000000057/suppl-5051-47/art-4</sup>

**第一項**  この法律の施行前にした行為及び前条の規定によりなお従前の例によることとされる場合におけるこの法律の施行後にした行為に対する罰則の適用については、なお従前の例による。
<sup>suppl-5051-47/art-4/par-1 · https://japanlaw.org/en/personal-information-protection-act/suppl-5051-47/art-4/par-1 · https://japanlaw.org/l/415AC0000000057/suppl-5051-47/art-4/par-1</sup>
The provisions then in force continue to govern the application of penal provisions to conduct engaged in before this Act comes into effect and to conduct engaged in after this Act comes into effect in the cases in which the provisions then in force continue to govern pursuant to the provisions of the preceding Article.
<sup>machine translation, not official</sup>

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## 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
- claude-opus-5-5 — Machine translation, batch personal-information-protection-act-20261010T184447-004, translated 2026-10-11
- 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