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MARC 21

protocol for encoding machine-readable bibliographic records
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MARC 21

Summary

MARC 21 is a metadata standard[1]. It draws 20 Wikipedia views per month (metadata_standard category, ranking #12 of 10).[2]

Key Facts

  • MARC 21's field of work was bibliography[3].
  • MARC 21's instance of is recorded as metadata standard[4].
  • MARC 21 is a type of textual data format[5].
  • MARC 21 is part of MARC standards[6].
  • MARC 21's official website is recorded as http://www.loc.gov/marc/marc.html[7].

Body

Geography

MARC 21 is part of MARC standards[6].

Designation and Status

MARC 21's instance of is recorded as metadata standard[4].

Why It Matters

MARC 21 draws 20 Wikipedia views per month (metadata_standard category, ranking #12 of 10).[2] It has Wikipedia articles in 6 language editions, a strong signal of global cultural recognition.[8] It is known by 6 alternative names across languages and contexts.[9]

Related Entities

bibliography MARC standards

References

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

Direct Wikidata claims

  1. [4] ↑ . wikidata.org.
  2. [3] ↑ . wikidata.org.
  3. [5] ↑ . wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [7] ↑ . loc.gov. Retrieved . loc.gov. Provenance: wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [8] ↑ . Wikidata sitelinks. wikidata.org.
  3. [9] ↑ . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). MARC 21. Retrieved May 3, 2026, from https://4ort.xyz/entity/marc-21
MLA “MARC 21.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/marc-21.
BibTeX @misc{4ortxyz_marc-21_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{MARC 21}}, year = {2026}, url = {https://4ort.xyz/entity/marc-21}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): MARC 21 — https://4ort.xyz/entity/marc-21 (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/marc-21 · Last refreshed:

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. 5w ago · Jindřich Rubeš · 2026-06-11 view diff on Wikidata ↗
    Instance of → —
    Svkkl authority id → 0203556-MARC-21-format
    Field of work → bibliography
    Instance of → metadata standard
    + 8 other properties edited (see Wikidata diff for full list)
    "/* wbcreateclaim-create:1| */ [[Property:P9322]]: 0203556-MARC-21-format, [[:toollabs:quickstatements/#/batch/259495|batch #259495]]"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.