Al-Kindi

Muslim Arab philosopher, mathematician and physician (c.801–873)
Person human Q179759
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Al-Kindi

Summary

Al-Kindi is a human[1]. His place of birth was Kufa[2]. He was born on January 1, 801[3]. He passed away in Baghdad[4]. He died on January 1, 870[5]. He worked as a philosopher[6], mathematician[7], cryptologist[8], astronomer[9], and physician[10]. He ranks in the top 0.69% of human entities by monthly Wikipedia readership (2,058 views/month, #6,939 of 1,000,298).[11]

Key Facts

  • Al-Kindi was born in Kufa[2].
  • Al-Kindi was born in Basra[12].
  • Al-Kindi died in Baghdad[4].
  • Al-Kindi was born on January 1, 801[3].
  • Al-Kindi was born on 800[13].
  • Al-Kindi was born on 796[14].
  • Al-Kindi died on January 1, 870[5].
  • Al-Kindi died on 873[15].
  • Al-Kindi held citizenship in Abbasid Caliphate[16].
  • Arabic was Al-Kindi's native language[17].
  • Al-Kindi's professions included philosopher[6].
  • Al-Kindi's professions included mathematician[7].
  • Al-Kindi's professions included cryptologist[8].
  • Al-Kindi's professions included astronomer[9].
  • Al-Kindi's professions included physician[10].
  • Al-Kindi's professions included music theorist[18].
  • Al-Kindi's field of work was mathematics[19].
  • Al-Kindi's field of work was philosophy[20].
  • Al-Kindi's field of work was Islamic theology[21].
  • Al-Kindi's field of work was logic[22].
  • Al-Kindi's field of work was ethics[23].
  • Al-Kindi's field of work was physics[24].
  • Among Al-Kindi's employers was House of Wisdom[25].
  • A notable student of Al-Kindi was Abu Ma'shar al-Balkhi[26].
  • A notable student of Al-Kindi was Abu Zayd al-Balkhi[27].

Body

Origins and Family

Recorded place of birth include Kufa[2], a city[28], in Iraq[29] and Basra[12], a port city[30], in Iraq[31], founded in 0638[32]. Recorded date of birth include January 1, 801[3], 800[13], and 796[14]. Arabic was Al-Kindi's native language[17].

Career and Affiliations

Recorded occupations include philosopher[6], mathematician[7], cryptologist[8], astronomer[9], physician[10], and music theorist[18]. Fields of work include mathematics[19], an academic discipline[33]; philosophy[20], an academic discipline[34]; Islamic theology[21], a confessional aspect[35]; logic[22], a class used in Universal Decimal Classification[36]; ethics[23], a branch of philosophy[37]; and physics[24], a branch of science[38]. Among Al-Kindi's employers was House of Wisdom[25]. Notable students include Abu Ma'shar al-Balkhi[26], Abu Zayd al-Balkhi[27], and Ahmad ibn al-Tayyib al-Sarakhsi[39].

Works and Contributions

Notable works include Q19455250[40], a literary work[41]; Q19497982[42], a literary work[43]; De Gradibus[44], a version, edition or translation[45], founded in 0850[46]; Q19497987[47]; Q19498040[48]; and On the Intellect[49].

Personal Life

Al-Kindi's religion is recorded as Islam[50].

Death and Burial

Recorded date of death include January 1, 870[5] and 873[15]. Al-Kindi passed away in Baghdad[4].

Why It Matters

Al-Kindi ranks in the top 0.69% of human entities by monthly Wikipedia readership (2,058 views/month, #6,939 of 1,000,298).[11] He has Wikipedia articles in 27 language editions, a strong signal of global cultural recognition.[51] He is known by 72 alternative names across languages and contexts.[52]

He has been cited as an influence by Thomas Aquinas[53], a theologian[54], 1225–1274[55], specialised in philosophy[56]; Avicenna[57], a philosopher[58], 0980–1037[59], specialised in medicine[60]; Ibn Miskawayh[61], a philosopher[62], 0932–1030[63], of Buyid dynasty[64], specialised in theology[65]; Isaac ben Solomon al-Israeli[66], a physician[67], 0832–0932[68], of Fatimid Caliphate[69], specialised in philosophy[70]; and Ibn Habal[71], a physician[72], 1122–1213[73].

He is credited with the discovery of substitution cipher[74] and frequency analysis[75], a type of cryptographic attack[76]. Works attributed to him include De Gradibus[77], a version, edition or translation[78], founded in 0850[79].

FAQs

Where was Al-Kindi born?

Born in Kufa[2], Al-Kindi…

Where did Al-Kindi die?

Al-Kindi died in Baghdad[4].

What did Al-Kindi do for work?

Al-Kindi worked as philosopher[6], mathematician[7], cryptologist[8], astronomer[9], and physician[10].

Who did Al-Kindi influence?

Al-Kindi has been cited as an influence by Thomas Aquinas[53], Avicenna[57], Ibn Miskawayh[61], and Isaac ben Solomon al-Israeli[66].

What did Al-Kindi discover?

Al-Kindi is credited as discoverer of substitution cipher[74] and frequency analysis[75].

References

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

Direct Wikidata claims

  1. [2] . wikidata.org.
  2. [12] . wikidata.org.
  3. [4] . wikidata.org.
  4. [16] . wikidata.org.
  5. [19] . wikidata.org.
  6. [20] . wikidata.org.
  7. [21] . wikidata.org.
  8. [22] . wikidata.org.
  9. [23] . wikidata.org.
  10. [24] . wikidata.org.
  11. [17] . wikidata.org.
  12. [6] . wikidata.org.
  13. [7] . wikidata.org.
  14. [8] . wikidata.org.
  15. [9] . wikidata.org.
  16. [10] . wikidata.org.
  17. [18] . wikidata.org.
  18. [25] . wikidata.org.
  19. [50] . wikidata.org.
  20. [3] . wikidata.org.
  21. [13] . wikidata.org.
  22. [14] . wikidata.org.
  23. [5] . wikidata.org.
  24. [15] . wikidata.org.
  25. [40] . wikidata.org.
  26. [42] . wikidata.org.
  27. [44] . wikidata.org.
  28. [47] . wikidata.org.
  29. [48] . wikidata.org.
  30. [49] . wikidata.org.
  31. [26] . wikidata.org.
  32. [27] . wikidata.org.
  33. [39] . wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [53] . wikidata.org. → on this site
  2. [57] . wikidata.org. → on this site
  3. [61] . wikidata.org. → on this site
  4. [66] . wikidata.org. → on this site
  5. [71] . wikidata.org. → on this site
  6. [74] . wikidata.org. → on this site
  7. [75] . wikidata.org. → on this site
  8. [77] . wikidata.org. → on this site

Inline context (facts about related entities)

  1. [28] . Wikidata. wikidata.org. → on this site
  2. [29] . Wikidata. wikidata.org. → on this site
  3. [30] . Wikidata. wikidata.org. → on this site
  4. [31] . Wikidata. wikidata.org. → on this site
  5. [32] . Wikidata. wikidata.org. → on this site
  6. [33] . Wikidata. wikidata.org. → on this site
  7. [34] . Wikidata. wikidata.org. → on this site
  8. [35] . Wikidata. wikidata.org. → on this site
  9. [36] . Wikidata. wikidata.org. → on this site
  10. [37] . Wikidata. wikidata.org. → on this site
  11. [38] . Wikidata. wikidata.org. → on this site
  12. [41] . Wikidata. wikidata.org. → on this site
  13. [43] . Wikidata. wikidata.org. → on this site
  14. [45] . Wikidata. wikidata.org. → on this site
  15. [46] . Wikidata. wikidata.org. → on this site
  16. [54] . Wikidata. wikidata.org. → on this site
  17. [55] . Wikidata. wikidata.org. → on this site
  18. [56] . Wikidata. wikidata.org. → on this site
  19. [58] . Wikidata. wikidata.org. → on this site
  20. [59] . Wikidata. wikidata.org. → on this site
  21. [60] . Wikidata. wikidata.org. → on this site
  22. [62] . Wikidata. wikidata.org. → on this site
  23. [63] . Wikidata. wikidata.org. → on this site
  24. [64] . Wikidata. wikidata.org. → on this site
  25. [65] . Wikidata. wikidata.org. → on this site
  26. [67] . Wikidata. wikidata.org. → on this site
  27. [68] . Wikidata. wikidata.org. → on this site
  28. [69] . Wikidata. wikidata.org. → on this site
  29. [70] . Wikidata. wikidata.org. → on this site
  30. [72] . Wikidata. wikidata.org. → on this site
  31. [73] . Wikidata. wikidata.org. → on this site
  32. [76] . Wikidata. wikidata.org. → on this site
  33. [78] . Wikidata. wikidata.org. → on this site
  34. [79] . Wikidata. wikidata.org. → on this site

Class ancestry

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

Aggregate / graph-position facts

  1. [11] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [51] . Wikidata sitelinks. wikidata.org.
  3. [52] . 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). Al-Kindi. Retrieved April 10, 2026, from https://4ort.xyz/entity/al-kindi
MLA “Al-Kindi.” 4ort.xyz Knowledge Graph, 4ort.xyz, 10 Apr. 2026, https://4ort.xyz/entity/al-kindi.
BibTeX @misc{4ortxyz_al-kindi_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Al-Kindi}}, year = {2026}, url = {https://4ort.xyz/entity/al-kindi}, 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. 6d ago · ~2026-49355-20 · 2026-09-12 view diff on Wikidata ↗
    Described by source Small Brockhaus and Efron Encyclopedic Dictionary, Brockhaus and Efron Encyclopedic Dictionary, Great Soviet Encyclopedia (1926–1947) +6
    Image
    Occupation philosopher, mathematician, cryptologist +6
    "/* wbremoveclaims-remove:1| */ [[Property:P18]]: Al-Kindi.jpg"
  2. 4w ago · ForzaGreen · 2026-08-19 view diff on Wikidata ↗
    Name in native language الكندي, يعقوب بن إسحاق بن الصباح الكندي
    Place of birth Kufa, Basra
    Date of death +0870-01-01T00:00:00Z, +0873-00-00T00:00:00Z
    "/* wbcreateclaim-create:1| */ [[Property:P1559]]: يعقوب بن إسحاق بن الصباح الكندي, [[:toollabs:quickstatements/#/batch/269160|batch #269160]]"
  3. 4w ago · Crinkly.sun · 2026-08-18 view diff on Wikidata ↗
    Image
    "/* wbsetclaim-create:2||1 */ [[Property:P19]]: [[Q137387318]]"
  4. 4w ago · 004bvan · 2026-08-17 view diff on Wikidata ↗
    Image
    "/* wbremoveclaims-remove:1| */ [[Property:P18]]: Al-Kindi Portrait.jpg"
  5. 8w ago · Pierrotrgr · 2026-07-22 view diff on Wikidata ↗
    Biblissima authority id Silvrettahorn
    "/* wbsetclaim-create:2||1 */ [[Property:P11493]]: Q16688, Import ID Biblissima V2 ([[:toollabs:editgroups/b/OR/74d891b831c|details]])"
  6. 10w ago · Nyuhn · 2026-07-10 view diff on Wikidata ↗
    P14541 2DmPkv
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/40849|batch #40849]]: ZGBK ID"
  7. 11w ago · A121008 · 2026-06-29 view diff on Wikidata ↗
    Great norwegian encyclopedia id al-Kindi
    "/* wbsetclaim-create:2||1 */ [[Property:P4342]]: al-Kindi"
  8. 13w ago · Bargioni · 2026-06-17 view diff on Wikidata ↗
    Parsifal cluster id 50520, 567320, 321210 +1
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/37018|batch #37018]]: add P1810 to P12458"
  9. 13w ago · Epìdosis · 2026-06-16 view diff on Wikidata ↗
    Parsifal cluster id 50520, 567320, 321210 +1
    "/* wbsetclaim-create:1||1 */ [[Property:P12458]]: 321210, Matched to [[:toollabs:mix-n-match/#/entry/161202162|Ya qub b. Ishaq Al-Kindi (#161202162)]] in [[:toollabs:mix-n-match/#/catalog/6216|Parsifa"
  10. 14w ago · MariuszRokin · 2026-06-07 view diff on Wikidata ↗
    Parsifal cluster id 50520, 567320, 321210 +1
    "/* wbcreateclaim-create:1| */ [[Property:P12458]]: 567320, [[:toollabs:quickstatements/#/batch/259387|batch #259387]]"
  11. 18w ago · Epìdosis · 2026-05-15 view diff on Wikidata ↗
    Cerl thesaurus id cnp01325435
    "/* wbremoveclaims-remove:1| */ [[Property:P1871]]: cnp00401770, [[:toollabs:quickstatements/#/batch/257929|batch #257929]]"
  12. 18w ago · Epìdosis · 2026-05-12 view diff on Wikidata ↗
    Cerl thesaurus id cnp01325435
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/30846|batch #30846]]: match CERL IDs on the basis of GND (4)"
  13. 19w ago · Bargioni · 2026-05-07 view diff on Wikidata ↗
    Image purged license
    Image needs reharvest
    Image last checked license
    Image unavailable reason
    + 1 other property edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/30465|batch #30465]]: add P1810 to P5739 1/3"
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