Here are few Prominent Ulema of Islam

Muslim scholars (Ulema) are either born in a Muslim families, or converted to Islam.

• Abu Bakr, first Muslim Caliph after the prophet
• Umar Bin Khattab, second Muslim Caliph after the prophet
• Uthman Bin Affan, third Muslim Caliph after the prophet
• Ali ibn Abu Talib - 599, fourth Muslim Caliph, cousin and son-in law of the Last Prophet Muhammad
• Husayn ibn Ali - Son of Ali ibn Abi Taalib
• Ibn Abbas - 619, Arab
• Abdullah ibn Masoud - d. 652
• Zayd ibn Thabit - pre-610
• Hassan al-Basri - (642 - 728 or 737)
• Umar Bin Abdul Aziz - (682 - 720)
• Abu Hanifa an-Nu'man - (699 - 767), Compiler of Hadith collection Kitaab-ul-Aathar and founder of Hanafi school of Islamic jurisprudence
• Malik ibn Anas - (715 - 796), Al-Muwatta
• Geber (Jabir ibn Hayyan) - (721 - 815), Arab polymath and father of chemistry
• Muhammad ibn Mūsā al-Khwārizmī (780 - 850) Khwarizmi Persian astronomer and father of algebra
• Abu 'Abd Allah ash-Shafi'i - (767 - 820)
• Ahmad ibn Hanbal - (780 - 855), Musnad Ahmad ibn Hanbal
• Yaqub ibn Ishaq al-Kindi - (801 - 873), Arab, multiple fields
• Muhammad Ibn Ismail al-Bukhari ibn ahmed - (810 - 870), Persian, Hadith, Sahih Bukhari Most trusted hadith collector inIslam
• Ibn Hisham - (d. 834)
• Abu Dawud as-Sidjistani, (817 - 888) (Basra), Sunan Abu Dawud, Persian, Hadith compiler
• Imam Muslim ibn al-Hajjaj - (821 - 875), Sahih Muslim, , Persian
• Al-Tirmidhi - (824 - 892), Jami at-Tirmidhi
• Ibn Majah - (824 - 887) Persia Sunan ibn Majah
• Ibn Qutaybah - (828-889)
• Al-Nasa'i - (829 - 915) Hadith collection , Persian
• ibn Jarir al-Tabari - (838 - 923), Sunni, Persian, multiple fields, Tarikh al-Tabari/Tafsir al-Tabari
• Abu al-Hasan al-Ash'ari - (874 – 936) Arab
• At-Tahawi - (853 - 933) Egypt Aqeedah at-Tahawiyyah
• Abu Mansur Al Maturidi - d. 333 AH / 944 CE Persian
• Al-Farabi - (870 - 950), Persian
• Al-Barbahaaree - (d. 940) Iraqi scholar, authored The Explanation of the Creed.
• al-Tabarani - (875 - 975) al-Mu'jam al-Kabeer
• Hakim al-Nishaburi - (933 - 1012/1014) Persian, Mustadrak al-Hakim
• Abu al-Qasim al-Zahrawi (Abulcasis) (936-1013), Andalusian Arab physician and father of modern surgery
• Ibn al-Haytham (Alhacen) (965-1039), Arab or Persian universal genius, father of optics, pioneer of scientific method, founder of psychophysics and experimental psychology, and the "first scientist"
• Al-Mawardi (972- 1058), Arab
• Ibn Hazm - (994 – 1064), (Cordoba) Andalusian philosopher
• Al-Khatib al-Baghdadi - (1001 - 1072)
• Nizam al-Mulk - (1018 – 1092) Persian Siyasatnama
• Avicenna (Ibn Sina) - (980-1037), Persian universal genius and father of modern medicine and momentum
• Al-Juwayni - (1020 - 1079), Fara'id al-Simtayn
• Ali ibn Tahir al-Sulami - d. 1106
• Al-Ghazali - (1058-1111) Persian theologian and philosopher
• Ibn Yaḥyā al-Maghribī al-Samawʾal -(1130-1180) The Good Jew from Morocco
• Ibn Qudamah al-Maqdisi - (1147-1223) al-Mughni
• Fakhr al-Din al-Razi, (1149-1209) Persian
• Ali ibn al-Athir - (1160 - 1233), The Complete History
• Mahmud al-Alusi - (1217 - 1270), Ruh al-Ma'ani Tafseer
• Sibt ibn al-Jawzi - d. 1257
• Al-Qurtubi - d. 1273 Tafsir al-Qurtubi Andalusian
• Al-Nawawi - (1233-1278) Sharh Sahih Muslim, Riyadh as-Saaliheen, 40 Hadith Nawawi
• Abul Fida Ismail Ibn Hamwi, (1273 -1331), Sunni Shafii (?), Syria, multiple fields, Tarikh Abul Fida
• Al-Dhahabi - (1274-1348) Talkhis al-Mustadrak
• Ibn al-Qayyim al-Jawziyyah - (1292-1350) Za'ad al-Ma'ad
• al-Haafizh ibn Kathir - (1301-1373) Tafsir ibn Kathir
• Ali ibn Abu Bakr al-Haythami - 13??, Majma al-Zawa'id
• Ibn Khaldun - (1332 - 1406), Arab polymath, historian, and father of demography, historiography, philosophy of history,sociology, and social sciences
• al-Hafidh ibn Rajab al-Hanbali - (1335-1392) Damascus
• Ibn Hajar al-Asqalani - (1372-1449) Muhaddith author of al-Fath al-Baari and Bulugh al-Maram
• al-Suyuti - (1445 - 1505), History of the Caliphs
• Ibn Hajar Al-Haythami - (1525 - 1590) Al-Sawa'iq al-Muhriqah
• Shah Waliullah - (1703–1762)
• Imam Ahmed Rida Khan Mujaddid - (1856-1921)
• Huzoor Hafize Millat Hazrat Abdul Aziz Muhaddis Muradabadi -  (  ) Founder Al-jamiatul Ashrafia Arabic University in Mubarak pur Azamgarh U.P India this is one of the Biggest Sunni Madarsa in the world. for more information please visit  http://www.aljamiatulashrafia.org/