Starting in 1996, Alexa Internet has been donating their crawl data to the Internet Archive. Flowing in every day, these data are added to the Wayback Machine after an embargo period.
Khadijah - wife of Muhammad. First convert to Islam.
Shabbetai Tzevi - seventeenth-century Turkish Jew who had claimed to be Messiah and attracted a large following. His conversion to Islam largely dissolved this mass messianic Jewish movement, but also resulted in the development of the ongoing Donmeh religious movement.
Malcom X - early leader of American "Black Muslim"/Nation of Islam movement; later a convert to Sunni Islam
Cat Stevens - British rock musician; changed name to Yusuf Islam
Art Blakey - American Jazz musician
Muhammad Ali - boxer
Mike Tyson - boxer
Hamdan Chris Eubank - boxer (super middleweight boxing champion)
Kareem Abdul-Jabbar - basketball player
Queen Noor - American-born queen of Jordan
Maryam Jameelah - Jewish American essayist and poet. Formerly Margaret Marcus.
Daniel Moore - Anglo-American poet
Muhammad Marmaduke (William) Pickthall - author and Quran translator
Michael Wolfe - author, journalist (The Hadj: An American's Pilgrimage to Mecca; One Thousand Roads to Mecca: Ten Centuries of Travelers Writing About the Muslim Pilgrimage; ABC Nightline documentary "An American in Mecca")
Jemima Goldsmith - daughter of British billionaire Sir James, who married Imran Khan. Changed name to Haiqa Khan.
Famous People who are NOT Converts to Islam
The following famous individuals have been the subject of widely circulated but completely fabricated "conversion to Islam" rumors:
Neil Armstrong
Jacques Cousteau
Michael Jackson
Links
Suite101: Famous Converts to Islam - Anayat Durrani has an excellent and useful list of famous converts to Islam. It has more information about each person. It was from here that we were able to learn about and add four additional names to our list: Kareem Abdul-Jabbar, Muhammad Marmaduke (William) Pickthall, Hamdan Chris Eubank, and Michael Wolfe. (We also recommend the entire Suite101 Islam site as an excellent resource.)