# 著作権法 / Copyright Act — 第四十八条 (Article 48)

- Law: 著作権法 (Copyright Act), 昭和四十五年法律第四十八号
- English title "Copyright Act": 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: 第四十八条 (Article 48)（出所の明示） — address `art-48`
- Text in force since: 2026-06-24
- URL (the page that opens at this provision): https://japanlaw.org/ja/copyright-act/art-48
- Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/345AC0000000048/art-48
- 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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### 第四十八条（出所の明示） — (Indication of Sources)
<sup>caption: Ministry of Justice translation — Japanese Law Translation Database System</sup>
<sup>art-48 · https://japanlaw.org/ja/copyright-act/art-48 · https://japanlaw.org/l/345AC0000000048/art-48</sup>

    **第一項**  次の各号に掲げる場合には、当該各号に規定する著作物の出所を、その複製又は利用の態様に応じ合理的と認められる方法及び程度により、明示しなければならない。
    <sup>art-48/par-1 · https://japanlaw.org/ja/copyright-act/art-48/par-1 · https://japanlaw.org/l/345AC0000000048/art-48/par-1</sup>
    In a case set forth in one of the following items, the source of the work must be clearly indicated in the manner and to the extent considered reasonable, commensurate with the circumstances of its reproduction or exploitation:
    <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

      **一**  第三十二条、第三十三条第一項（同条第四項において準用する場合を含む。）、第三十三条の二第一項、第三十三条の三第一項、第三十七条第一項、第四十一条の二第一項、第四十二条、第四十二条の二第一項又は第四十七条第一項の規定により著作物を複製する場合
      <sup>art-48/par-1/item-1 · https://japanlaw.org/ja/copyright-act/art-48/par-1/item-1 · https://japanlaw.org/l/345AC0000000048/art-48/par-1/item-1</sup>
      a work is reproduced pursuant to the provisions of Article 32; Article 33, paragraph (1) (including when application mutatis mutandis is provided for pursuant to the provisions of paragraph (4) of that Article); Article 33-2, paragraph (1); Article 33-3, paragraph (1); Article 37, paragraph (1); Article 41-2, paragraph (1); Article 42; Article 42-2, paragraph (1); or Article 47, paragraph (1);
      <sup>machine translation, not official</sup>

      **二**  第三十四条第一項、第三十七条第三項、第三十七条の二、第三十九条第一項、第四十条第一項若しくは第二項、第四十七条第二項若しくは第三項又は第四十七条の二の規定により著作物を利用する場合
      <sup>art-48/par-1/item-2 · https://japanlaw.org/ja/copyright-act/art-48/par-1/item-2 · https://japanlaw.org/l/345AC0000000048/art-48/par-1/item-2</sup>
      a work is exploited pursuant to the provisions of Article 34, paragraph (1); Article 37, paragraph (3); Article 37-2; Article 39, paragraph (1); Article 40, paragraph (1) or (2); Article 47, paragraph (2) or (3); or Article 47-2;
      <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

      **三**  第三十二条若しくは第四十二条の規定により著作物を複製以外の方法により利用する場合又は第三十五条第一項、第三十六条第一項、第三十八条第一項、第四十一条、第四十一条の二第二項、第四十二条の二第二項、第四十六条若しくは第四十七条の五第一項の規定により著作物を利用する場合において、その出所を明示する慣行があるとき。
      <sup>art-48/par-1/item-3 · https://japanlaw.org/ja/copyright-act/art-48/par-1/item-3 · https://japanlaw.org/l/345AC0000000048/art-48/par-1/item-3</sup>
      a work is exploited other than by its reproduction pursuant to the provisions of Article 32 or Article 42, or is exploited pursuant to the provisions of Article 35, paragraph (1); Article 36, paragraph (1); Article 38, paragraph (1); Article 41; Article 41-2, paragraph (2); Article 42-2, paragraph (2); Article 46; or Article 47-5, paragraph (1), and it is common practice to indicate the source.
      <sup>machine translation, not official</sup>

    **第二項**  前項の出所の明示に当たつては、これに伴い著作者名が明らかになる場合及び当該著作物が無名のものである場合を除き、当該著作物につき表示されている著作者名を示さなければならない。
    <sup>art-48/par-2 · https://japanlaw.org/ja/copyright-act/art-48/par-2 · https://japanlaw.org/l/345AC0000000048/art-48/par-2</sup>
    In a source indication as referred to in the preceding paragraph, the name of the author that appears on the work must be cited, except if the author's name is clear from the source indication or if the work is anonymous.
    <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

    **第三項**  次の各号に掲げる場合には、前二項の規定の例により、当該各号に規定する二次的著作物の原著作物の出所を明示しなければならない。
    <sup>art-48/par-3 · https://japanlaw.org/ja/copyright-act/art-48/par-3 · https://japanlaw.org/l/345AC0000000048/art-48/par-3</sup>
    If a work is exploited as provided in one of the following items, the source of the original work underlying the derivative work provided for in that item must be indicated pursuant to the provisions of the preceding two paragraphs:
    <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

      **一**  第四十条第一項、第四十六条又は第四十七条の五第一項の規定により創作された二次的著作物をこれらの規定により利用する場合
      <sup>art-48/par-3/item-1 · https://japanlaw.org/ja/copyright-act/art-48/par-3/item-1 · https://japanlaw.org/l/345AC0000000048/art-48/par-3/item-1</sup>
      a derivative work created pursuant to the provisions of Article 40, paragraph (1); Article 46; or Article 47-5, paragraph (1) is exploited pursuant to those provisions;
      <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

      **二**  第四十七条の六第一項の規定により創作された二次的著作物を同条第二項の規定の適用を受けて同条第一項各号に掲げる規定により利用する場合
      <sup>art-48/par-3/item-2 · https://japanlaw.org/ja/copyright-act/art-48/par-3/item-2 · https://japanlaw.org/l/345AC0000000048/art-48/par-3/item-2</sup>
      a derivative work created pursuant to the provisions of Article 47-6, paragraph (1) is exploited based on the application of the provisions set forth in paragraph (2) of that Article pursuant to the items of paragraph (1) of that Article.
      <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

---

## Cites
- art-48/par-1/item-1: 第三十二条 → 著作権法 第三十二条 (Article 32), art-32 — https://japanlaw.org/ja/copyright-act/art-32 · https://japanlaw.org/l/345AC0000000048/art-32
- art-48/par-1/item-1: 第三十三条第一項 → 著作権法 第三十三条第一項 (Article 33, paragraph (1)), art-33/par-1 — https://japanlaw.org/ja/copyright-act/art-33/par-1 · https://japanlaw.org/l/345AC0000000048/art-33/par-1
- art-48/par-1/item-1: 同条第四項 → 著作権法 第三十三条第四項 (Article 33, paragraph (4)), art-33/par-4 — https://japanlaw.org/ja/copyright-act/art-33/par-4 · https://japanlaw.org/l/345AC0000000048/art-33/par-4
- art-48/par-1/item-1: 第三十三条の二第一項 → 著作権法 第三十三条の二第一項 (Article 33-2, paragraph (1)), art-33-2/par-1 — https://japanlaw.org/ja/copyright-act/art-33-2/par-1 · https://japanlaw.org/l/345AC0000000048/art-33-2/par-1
- art-48/par-1/item-1: 第三十三条の三第一項 → 著作権法 第三十三条の三第一項 (Article 33-3, paragraph (1)), art-33-3/par-1 — https://japanlaw.org/ja/copyright-act/art-33-3/par-1 · https://japanlaw.org/l/345AC0000000048/art-33-3/par-1
- art-48/par-1/item-1: 第三十七条第一項 → 著作権法 第三十七条第一項 (Article 37, paragraph (1)), art-37/par-1 — https://japanlaw.org/ja/copyright-act/art-37/par-1 · https://japanlaw.org/l/345AC0000000048/art-37/par-1
- art-48/par-1/item-1: 第四十一条の二第一項 → 著作権法 第四十一条の二第一項 (Article 41-2, paragraph (1)), art-41-2/par-1 — https://japanlaw.org/ja/copyright-act/art-41-2/par-1 · https://japanlaw.org/l/345AC0000000048/art-41-2/par-1
- art-48/par-1/item-1: 第四十二条 → 著作権法 第四十二条 (Article 42), art-42 — https://japanlaw.org/ja/copyright-act/art-42 · https://japanlaw.org/l/345AC0000000048/art-42
- art-48/par-1/item-1: 第四十二条の二第一項 → 著作権法 第四十二条の二第一項 (Article 42-2, paragraph (1)), art-42-2/par-1 — https://japanlaw.org/ja/copyright-act/art-42-2/par-1 · https://japanlaw.org/l/345AC0000000048/art-42-2/par-1
- art-48/par-1/item-1: 第四十七条第一項 → 著作権法 第四十七条第一項 (Article 47, paragraph (1)), art-47/par-1 — https://japanlaw.org/ja/copyright-act/art-47/par-1 · https://japanlaw.org/l/345AC0000000048/art-47/par-1
- art-48/par-1/item-2: 第三十四条第一項 → 著作権法 第三十四条第一項 (Article 34, paragraph (1)), art-34/par-1 — https://japanlaw.org/ja/copyright-act/art-34/par-1 · https://japanlaw.org/l/345AC0000000048/art-34/par-1
- art-48/par-1/item-2: 第三十七条第三項 → 著作権法 第三十七条第三項 (Article 37, paragraph (3)), art-37/par-3 — https://japanlaw.org/ja/copyright-act/art-37/par-3 · https://japanlaw.org/l/345AC0000000048/art-37/par-3
- art-48/par-1/item-2: 第三十七条の二 → 著作権法 第三十七条の二 (Article 37-2), art-37-2 — https://japanlaw.org/ja/copyright-act/art-37-2 · https://japanlaw.org/l/345AC0000000048/art-37-2
- art-48/par-1/item-2: 第三十九条第一項 → 著作権法 第三十九条第一項 (Article 39, paragraph (1)), art-39/par-1 — https://japanlaw.org/ja/copyright-act/art-39/par-1 · https://japanlaw.org/l/345AC0000000048/art-39/par-1
- art-48/par-1/item-2: 第四十条第一項 → 著作権法 第四十条第一項 (Article 40, paragraph (1)), art-40/par-1 — https://japanlaw.org/ja/copyright-act/art-40/par-1 · https://japanlaw.org/l/345AC0000000048/art-40/par-1
- art-48/par-1/item-2: 第二項 → 著作権法 第四十条第二項 (Article 40, paragraph (2)), art-40/par-2 — https://japanlaw.org/ja/copyright-act/art-40/par-2 · https://japanlaw.org/l/345AC0000000048/art-40/par-2
- art-48/par-1/item-2: 第四十七条第二項 → 著作権法 第四十七条第二項 (Article 47, paragraph (2)), art-47/par-2 — https://japanlaw.org/ja/copyright-act/art-47/par-2 · https://japanlaw.org/l/345AC0000000048/art-47/par-2
- art-48/par-1/item-2: 第三項 → 著作権法 第四十七条第三項 (Article 47, paragraph (3)), art-47/par-3 — https://japanlaw.org/ja/copyright-act/art-47/par-3 · https://japanlaw.org/l/345AC0000000048/art-47/par-3
- art-48/par-1/item-2: 第四十七条の二 → 著作権法 第四十七条の二 (Article 47-2), art-47-2 — https://japanlaw.org/ja/copyright-act/art-47-2 · https://japanlaw.org/l/345AC0000000048/art-47-2
- art-48/par-1/item-3: 第三十二条 → 著作権法 第三十二条 (Article 32), art-32 — https://japanlaw.org/ja/copyright-act/art-32 · https://japanlaw.org/l/345AC0000000048/art-32
- art-48/par-1/item-3: 第四十二条 → 著作権法 第四十二条 (Article 42), art-42 — https://japanlaw.org/ja/copyright-act/art-42 · https://japanlaw.org/l/345AC0000000048/art-42
- art-48/par-1/item-3: 第三十五条第一項 → 著作権法 第三十五条第一項 (Article 35, paragraph (1)), art-35/par-1 — https://japanlaw.org/ja/copyright-act/art-35/par-1 · https://japanlaw.org/l/345AC0000000048/art-35/par-1
- art-48/par-1/item-3: 第三十六条第一項 → 著作権法 第三十六条第一項 (Article 36, paragraph (1)), art-36/par-1 — https://japanlaw.org/ja/copyright-act/art-36/par-1 · https://japanlaw.org/l/345AC0000000048/art-36/par-1
- art-48/par-1/item-3: 第三十八条第一項 → 著作権法 第三十八条第一項 (Article 38, paragraph (1)), art-38/par-1 — https://japanlaw.org/ja/copyright-act/art-38/par-1 · https://japanlaw.org/l/345AC0000000048/art-38/par-1
- art-48/par-1/item-3: 第四十一条 → 著作権法 第四十一条 (Article 41), art-41 — https://japanlaw.org/ja/copyright-act/art-41 · https://japanlaw.org/l/345AC0000000048/art-41
- art-48/par-1/item-3: 第四十一条の二第二項 → 著作権法 第四十一条の二第二項 (Article 41-2, paragraph (2)), art-41-2/par-2 — https://japanlaw.org/ja/copyright-act/art-41-2/par-2 · https://japanlaw.org/l/345AC0000000048/art-41-2/par-2
- art-48/par-1/item-3: 第四十二条の二第二項 → 著作権法 第四十二条の二第二項 (Article 42-2, paragraph (2)), art-42-2/par-2 — https://japanlaw.org/ja/copyright-act/art-42-2/par-2 · https://japanlaw.org/l/345AC0000000048/art-42-2/par-2
- art-48/par-1/item-3: 第四十六条 → 著作権法 第四十六条 (Article 46), art-46 — https://japanlaw.org/ja/copyright-act/art-46 · https://japanlaw.org/l/345AC0000000048/art-46
- art-48/par-1/item-3: 第四十七条の五第一項 → 著作権法 第四十七条の五第一項 (Article 47-5, paragraph (1)), art-47-5/par-1 — https://japanlaw.org/ja/copyright-act/art-47-5/par-1 · https://japanlaw.org/l/345AC0000000048/art-47-5/par-1
- art-48/par-2: 前項 → 著作権法 第四十八条第一項 (Article 48, paragraph (1)), art-48/par-1 — https://japanlaw.org/ja/copyright-act/art-48/par-1 · https://japanlaw.org/l/345AC0000000048/art-48/par-1
- art-48/par-3: 前二項 → 著作権法 第四十八条第一項 (Article 48, paragraph (1)), art-48/par-1 — https://japanlaw.org/ja/copyright-act/art-48/par-1 · https://japanlaw.org/l/345AC0000000048/art-48/par-1
- art-48/par-3: 前二項 → 著作権法 第四十八条第二項 (Article 48, paragraph (2)), art-48/par-2 — https://japanlaw.org/ja/copyright-act/art-48/par-2 · https://japanlaw.org/l/345AC0000000048/art-48/par-2
- art-48/par-3/item-1: 第四十条第一項 → 著作権法 第四十条第一項 (Article 40, paragraph (1)), art-40/par-1 — https://japanlaw.org/ja/copyright-act/art-40/par-1 · https://japanlaw.org/l/345AC0000000048/art-40/par-1
- art-48/par-3/item-1: 第四十六条 → 著作権法 第四十六条 (Article 46), art-46 — https://japanlaw.org/ja/copyright-act/art-46 · https://japanlaw.org/l/345AC0000000048/art-46
- art-48/par-3/item-1: 第四十七条の五第一項 → 著作権法 第四十七条の五第一項 (Article 47-5, paragraph (1)), art-47-5/par-1 — https://japanlaw.org/ja/copyright-act/art-47-5/par-1 · https://japanlaw.org/l/345AC0000000048/art-47-5/par-1
- art-48/par-3/item-2: 第四十七条の六第一項 → 著作権法 第四十七条の六第一項 (Article 47-6, paragraph (1)), art-47-6/par-1 — https://japanlaw.org/ja/copyright-act/art-47-6/par-1 · https://japanlaw.org/l/345AC0000000048/art-47-6/par-1
- art-48/par-3/item-2: 同条第二項 → 著作権法 第四十七条の六第二項 (Article 47-6, paragraph (2)), art-47-6/par-2 — https://japanlaw.org/ja/copyright-act/art-47-6/par-2 · https://japanlaw.org/l/345AC0000000048/art-47-6/par-2

## Cited by

4 provisions cite this one. No official source publishes this direction.

- 著作権法 第四十七条の六第二項（翻訳、翻案等による利用） — https://japanlaw.org/ja/copyright-act/art-47-6/par-2 · https://japanlaw.org/l/345AC0000000048/art-47-6/par-2
- 著作権法 第四十八条第二項（出所の明示） — https://japanlaw.org/ja/copyright-act/art-48/par-2 · https://japanlaw.org/l/345AC0000000048/art-48/par-2
- 著作権法 第四十八条第三項（出所の明示） — https://japanlaw.org/ja/copyright-act/art-48/par-3 · https://japanlaw.org/l/345AC0000000048/art-48/par-3
- 著作権法 第百二十二条第一項 — https://japanlaw.org/ja/copyright-act/art-122/par-1 · https://japanlaw.org/l/345AC0000000048/art-122/par-1

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## Sources

- e-Gov 法令検索, Digital Agency (デジタル庁) — 著作権法 — the text in force from 2026-06-24 (https://laws.e-gov.go.jp/law/345AC0000000048/20260624_508AC0000000048), retrieved 2026-10-19
- Japanese Law Translation Database System, Ministry of Justice (法務省) — Copyright Act — Ministry of Justice translation (https://www.japaneselawtranslation.go.jp/en/laws/view/4207/tb), retrieved 2026-10-19
- claude-sonnet-5-5 — Machine translation, batch copyright-act-20261019T151240-001, translated 2026-10-20
- This site's parser, version 210 — 著作権法 — structure, counts, cross-references and defined terms, computed 2026-10-19