National Diet Library

national library in Japan
Organization national_library Q477675
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The National Diet Library is Japan’s national library. It was founded on February 25, 1948.

The library serves as the country’s primary repository for published materials. Its establishment marked the consolidation of parliamentary and national collections under a single institution.

National Diet Library

Summary

National Diet Library is a national library[1]. It ranks in the top 6% of national_library entities by monthly Wikipedia readership (580 views/month).[2]

Key Facts

  • National Diet Library was a member of World Digital Library[3].
  • National Diet Library was a member of Geheugen van Nederland[4].
  • National Diet Library was a member of International Federation of Library Associations and Institutions[5].
  • National Diet Library was a member of International Internet Preservation Consortium[6].
  • National Diet Library is located in Nagatachō[7].
  • National Diet Library is in the country of Japan[8].
  • National Diet Library's instance of is recorded as national library[9].
  • National Diet Library's instance of is recorded as parliamentary library[10].
  • National Diet Library's instance of is recorded as library building[11].
  • National Diet Library's architect is recorded as Maekawa Associates, Architects & Engineers[12].
  • National Diet Library's main regulatory text is recorded as National Diet Library Act[13].
  • National Diet Library is operated by National Diet[14].
  • National Diet Library's headquarters location is recorded as Nagatachō[15].
  • National Diet Library's postal code is recorded as 100-8924[16].
  • National Diet Library's Commons category is recorded as National Diet Library[17].
  • National Diet Library comprises International Library of Children's Literature[18].
  • National Diet Library comprises Supreme Court Library[19].
  • National Diet Library comprises Kokuritsu Kokkai Toshokan. Shibu Ueno Toshokan[20].
  • National Diet Library comprises Kokuritsu Kokkai Toshokan Toshokan Kyoryokubu[21].
  • National Diet Library comprises Modern Japanese Political History Materials Room[22].
  • National Diet Library comprises Research and Legislative Reference Bureau, National Diet Library[23].
  • National Diet Library comprises Kansai-kan of the National Diet Library[24].
  • National Diet Library comprises Detached Library in the Diet[25].
  • February 25, 1948 marks the founding of National Diet Library[26].
  • National Diet Library's coordinate location is recorded as {'lat': 35.678333333333, 'lon': 139.74416666667}[27].

Body

Founding

February 25, 1948 marks the founding of National Diet Library[26].

Identity

Official names include {'lang': 'ja', 'text': '国立国会図書館'}[28] and {'lang': 'en', 'text': 'National Diet Library'}[29]. Its short name is recorded as {'lang': 'en', 'text': 'NDL'}[30].

Operations

National Diet Library's headquarters location is recorded as Nagatachō[15]. Its parent organization or unit is recorded as National Diet[31]. It is operated by National Diet[14].

Why It Matters

National Diet Library ranks in the top 6% of national_library entities by monthly Wikipedia readership (580 views/month).[2] It has Wikipedia articles in 28 language editions, a strong signal of global cultural recognition.[32] It is known by 21 alternative names across languages and contexts.[33]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [8] . wikidata.org.
  2. [9] . wikidata.org.
  3. [10] . wikidata.org.
  4. [11] . wikidata.org.
  5. [12] . mlit.go.jp. mlit.go.jp. Provenance: wikidata.org.
  6. [13] . wikidata.org.
  7. [7] . wikidata.org.
  8. [14] . wikidata.org.
  9. [15] . wikidata.org.
  10. [16] . wikidata.org.
  11. [17] . wikidata.org.
  12. [3] . wdl.org. wdl.org. Provenance: wikidata.org.
  13. [4] . geheugen.delpher.nl. Retrieved . geheugen.delpher.nl. Provenance: wikidata.org.
  14. [5] . Retrieved . wikidata.org.
  15. [6] . netpreserve.org. Retrieved . netpreserve.org. Provenance: wikidata.org.
  16. [18] . ndl.go.jp. Retrieved . ndl.go.jp. Provenance: wikidata.org.
  17. [19] . ndl.go.jp. Retrieved . ndl.go.jp. Provenance: wikidata.org.
  18. [20] . wikidata.org.
  19. [21] . wikidata.org.
  20. [22] . wikidata.org.
  21. [23] . wikidata.org.
  22. [24] . wikidata.org.
  23. [25] . ndl.go.jp. Retrieved . ndl.go.jp. Provenance: wikidata.org.
  24. [26] . wikidata.org.
  25. [27] . wikidata.org.
  26. [31] . wikidata.org.
  27. [28] . National Tax Agency Corporate Number Publication Site. wikidata.org.
  28. [29] . National Tax Agency Corporate Number Publication Site. wikidata.org.
  29. [30] . wikidata.org.

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [32] . Wikidata sitelinks. wikidata.org.
  3. [33] . Wikidata aliases. wikidata.org.

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APA 4ort.xyz Knowledge Graph. (2026). National Diet Library. Retrieved April 10, 2026, from https://4ort.xyz/entity/national-diet-library
MLA “National Diet Library.” 4ort.xyz Knowledge Graph, 4ort.xyz, 10 Apr. 2026, https://4ort.xyz/entity/national-diet-library.
BibTeX @misc{4ortxyz_national-diet-library_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{National Diet Library}}, year = {2026}, url = {https://4ort.xyz/entity/national-diet-library}, note = {Accessed: 2026-04-10}}
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Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 12d ago · Ihimutefu · 2026-05-22 view diff on Wikidata ↗
    Described by source Open GLAM Survey
    Instance of national library, parliamentary library, library building
    Main regulatory text National Diet Library Act
    Instance of
    + 36 other properties edited (see Wikidata diff for full list)
    "/* wbremoveclaims-remove:1| */ [[Property:P856]]: https://www.ndl.go.jp/zh/"
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