786 - 833

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Abu al-Abbas Abd Allah ibn Harun al-Rashid (Arabic: أبو العباس عبد الله بن هارون الرشيد, romanized: Abū al-ʿAbbās ʿAbd Allāh ibn Hārūn ar-Rashīd; 14 September 786 – 9 August 833), better known by his regnal name al-Ma'mun (Arabic: المأمون, romanized: al-Maʾmūn), was the seventh Abbasid caliph, who reigned from 813 until his death in 833. He succeeded his half-brother al-Amin after a civil war, during which the cohesion of the Abbasid Caliphate was weakened by rebellions and the rise of local strongmen; much of his domestic reign was consumed in pacification campaigns. Well educated and with a considerable interest in scholarship, al-Ma'mun promoted the Translation Movement, the flowering of learning and the sciences in Baghdad, and the publishing of al-Khwarizmi's book now known as "Algebra". Read more on Wikipedia

Since 2007, the English Wikipedia page of Al-Ma'mun has received more than 947,918 page views. His biography is available in 53 different languages on Wikipedia (up from 50 in 2019). Al-Ma'mun is the 804th most popular politician (down from 770th in 2019), the 26th most popular biography from Iraq (down from 25th in 2019) and the 13th most popular Iraqi Politician.

Al-ma'mun was most famous for his efforts to make the Islamic world more tolerant and open to other religions. He sponsored debates between Muslim scholars and Christian, Jewish, and Zoroastrian leaders. He also invited the Persian scholar Abu Ali al-Hussein ibn Ishaq al-Kindi to Baghdad to translate Greek texts into Arabic.

Memorability Metrics

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    Historical Popularity Index (HPI)

  • 53

    Languages Editions (L)

  • 6.58

    Effective Languages (L*)

  • 3.54

    Coefficient of Variation (CV)


Among politicians, Al-Ma'mun ranks 804 out of 19,576Before him are Tamar of Georgia, Antiochus IV Epiphanes, Hideki Tojo, Gro Harlem Brundtland, Taejong of Joseon, and Emmanuel Joseph Sieyès. After him are Igor of Kiev, Andromache, Charles XIII of Sweden, Publius Quinctilius Varus, Alexis of Russia, and Leonid Kuchma.

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Among people born in 786, Al-Ma'mun ranks 1After him are Emperor Saga, and Al-Ḥajjāj ibn Yūsuf ibn Maṭar. Among people deceased in 833, Al-Ma'mun ranks 1After him are Ibn Hisham, Al-Ḥajjāj ibn Yūsuf ibn Maṭar, García Galíndez, and Enravota.

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In Iraq

Among people born in Iraq, Al-Ma'mun ranks 26 out of 384Before him are Alexander IV of Macedon (-323), Ezra (-500), Sargon II (-750), Ahmad Sanjar (1100), Khosrow II (570), and Fuzûlî (1494). After him are Muhammad al-Mahdi (869), Jalal Talabani (1933), Ismail al-Jazari (1136), Belshazzar (-600), Al-Ash'ari (873), and Gudea (-2200).

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Among politicians born in Iraq, Al-Ma'mun ranks 13Before him are Ashurbanipal (-685), Nur ad-Din (1116), Nebuchadnezzar I (-1200), Alexander IV of Macedon (-323), Sargon II (-750), and Khosrow II (570). After him are Jalal Talabani (1933), Gudea (-2200), Möngke Khan (1209), Al-Mu'tasim (796), Antiochus I Soter (-324), and Ur-Nammu (-2200).