- Abdul-Karim al-Jabbar (Sharmon Shah) - former NFL football player
- Abu Tammam - 9th century Arab poet born to Christian parents.
- Abu Usamah - controversial American-born Imam of Green Lane Masjid in Birmingham, UK. Accused of preaching messages of hate towards non-Muslims in a UK Television documentary.
- Adam Yahiye Gadahn - spokesperson for Al-Qaeda; on the FBI's Most Wanted Terrorists list
- Ahmad Rashād - Emmy award-winning sportscaster (mostly with NBC Sports) and former American football wide receiver.
- Ahmed Santos - Filipino, fugitive, founder of the Rajah Solaiman Movement & suspected by Filipino authorities to be an Al Qaeda operative converted From Catholicism
- Ahmad Thomson - British barrister and writer and also a member of the Murabitun movement.
- Akhenaton - French rapper and producer of French hip hop.
- Alexander Litvinenko - former Russian spy converted to Islam on his deathbed.
- Alexander Russell Webb - Former Presbyterian. American journalist, newspaper owner, and former Consul-General of the U.S.A. in the Philippines.
- André Carson - former Baptist, second Muslim to serve the United States Congress.
- Anne Sophie Roald a Swedish theologist
- Anthony Green or Abdul Raheem Green, Converted from Catholicism to Islam, and is now an Islamic lecturer.
- Art Blakey - American Jazz musician
- Aukai Collins - fought in Chechnya, paid FBI informant, author of an autobiographical book
- Benjamin Chavis - controversial former head of the NAACP; joined the Nation of Islam, which is not connected with traditional islam in anyway.
- Bernard Hopkins - American boxer
- Betty Shabazz - wife of Malcolm X; former Methodist.
- Bilal Philips - Islamic scholar and author
- Bruno Metsu - French coach of the Senegal team at the 2002 FIFA World Cup
- Busta Rhymes - Music artist, born to Rastafari parents
- Cat Stevens the English singer of Greek ancestry.
- Count Cassius- Visigothic aristocrat who founded the Banu Qasi dynasty of Muladi rulers.
- Chris Eubank - British boxer
- Claude Alexandre de Bonneval - 18th century French nobleman.
- Daniel Moore - poet
- Danny Thompson - English double bass player converted from Catholicism.
- Danny Williams - British boxer
- David Belfield - American, fled to Iran after assassinating Ali Akbar Tabatabai, an Iranian dissident.
- David Benjamin Keldani an Iranian priest, converted from Keldan Christinity.
- David Chappelle - comedian and television star
- David Hicks- Former Taliban fighter from Australia, recently released from detention in Adelaide. However, he later left Islam while incarcerated.]
- Dawud Wharnsby Ali (David Wharnsby) - Canadian singer/poet.
- Emin Pasha - physician, naturalist, and Egyptian governor.
- Éric Abidal (changed his name to Bilal) - French football player , converted to Islam after marriage.
- Everlast - Rapper from the Irish-American hip-hop group House of Pain, converted From Catholicism.
- Franck Ribéry- a French football player. His name after he converted to Islam is Bilal.
- Fredrick De la Marck a South African priest in Johannesberg.
- Gabriele Torsello - Italian freelance photojournalist based in London who was abducted in Helmand Province, Afghanistan.
- Gary Miller (Abdul-Ahad Omar) is a mathematician and a theologian.
- George XI of Kartli - Saffavid commander.
- Germaine Lindsay - participated and died in the 7 July 2005 London bombings
- Hamza Yusuf - American convert from Greek Orthodox; head of the Zaytuna Institute.
- Hedley Churchward - English painter
- Helen Richardson - Indian, Bollywood actress converted From Catholicism
- Ian Dallas - Shaykh Dr. Abdalqadir as-Sufi - Sufi shaykh of Scottish origins.
- Ibrahim Muteferrika (original name not known) - From Unitarian Christianity, an early example of a Muslim publisher and printer.
- Ibn Jurayj grand father converted from Roman Catholic.
- Ice Cube, the American Rapper.
- Idi Amin Former president of Uganda.
- Ilie II Rareş - prince of Moldavia.
- Ingrid Mattson - Canadian scholar and current president of the Islamic Society of North America (2006) converted From Catholicism.
- Isabelle Eberhardt - from Lutheran Christianity, 19th century explorer & writer
- Ivan Aguéli (Johan Agelii) - famous Swedish painter.
- Iyasu V - Ethiopian emperor.
- C. Jack Ellis - Mayor of Macon, Georgia
- Jacques-Francois Menou - French general under Napoleon I of France.
- Jacques Vergès - French lawyer and famous anti-colonialism known for defending left- and right-wing international terrorists and dictators in court
- James Yee - previously Lutheran and former U.S. Army Muslim chaplain.
- Jean de Béthencourt - French explorer who led an expedition to the Canary Islands.
- Jeffrey Lang, a mathematics professor in USA.
- Jermaine Jackson (Muhammad Abdul Aziz) - former member of The Jackson 5 and brother of popstars Michael and Janet Jackson.
- Jerôme Courtailler - one of two French brothers convicted by French authorities in 2004 for abetting terrorists
- Jimmy Cliff - Jamaican reggae musician.
- Joe Tex - soul singer and recording artist.
- St. John Philby - Arabist, explorer, writer, and British colonial office intelligence operative; converted from Anglicanism.
- John Walker Lindh - the "American Taliban" converted From Catholicism
- John Whitehead - an American singer, songwriter, and record producer.
- John Nelson - first recorded Englishman to become a Muslim.
- Jonathan Birt, Jonathan Birt, the son of Lord Birt, former director-general of the BBC, and Emma Clark, the granddaughter of former liberal prime minister Herbert Asquith
- José Javier Gallego (born 1955) a Spanish thinker, writer, crtic of philosophy and history.
- Joseph Thomas - Australian convert, acquitted of terrorism charges, placed under a control order under the Australian Anti-Terrorism Act 2005, currently pending retrial.
- Judar Pasha - conqueror of the Songhai Empire.
- Kareem Abdul-Jabbar (Lew Alcindor) - retired basketball player & the NBA's all-time leading scorer
- Keith Ellison - American, Representative from Minnesota's 5th congressional district, first Muslim to be elected to the United States Congress, converted From Catholicism
- Kevin Barrett - university lecturer and member of Scholars for 9/11 Truth
- Khalid Yasin - Executive Director of the Islamic Teaching Institute, and a Shaykh currently residing in Australia.
- Knud Holmboe - Danish journalist and explorer converted From Catholicism.
- Dolores "LaLa" Brooks - American musician.
- Lee Boyd Malvo - convicted of capital murder and arrested for the Beltway sniper attacks, for being involved in 16 murders and 7 additional attempted murders.[
- Lennox Philip see Yasin Abu Bakr below.
- Léon Roche a french who lived in Algeria author of "Dix Ans à travers l’Islam" (Paris: 1904)[
- Lorik Cana the Albanian footballer of Olympique de Marseille.
- Mahmoud Abdul-Rauf (Chris Jackson) - retired basketball player[
- Malcolm X - American, from Christianity to Nation of Islam to Sunni Islam, African-American civil rights leader.
- Marmaduke Pickthall - famous translator of the Quran.
- Mario Scialoja - Italian ambassador and President of the World Muslim League.
- Martin Lings (Abu Bakr Siraj Ad-Din) (1909 – 2005) a British thinker & philosipher.
- Maryam Muhammad or Tawana Brawley see below.
- Matthew Saad Muhammad (formerly Matthew Franklin) - former boxer, converted From Catholicism.
- Maurice Bucaille a French medical doctor, author of The Bible, The Qur'an and Science, that was translated into several languages.
- Michael Muhammad Knight - American novelist, writer, and journalist.
- Michael Wolfe the American director.
- Mihnea Turcitul - was a Prince (Voivode) of Walachia. Converted from Eastern Orthodox Christianity.
- Muhammad Ali (formally Cassius Clay), from Baptist to The Nation of Islam to Sunni Islam. famous boxer.
- Mohammad Yousuf - Pakistani cricketer. Known for holding the world record for the most Test runs in a single calendar year, converted From Catholicism.
- Mohammed Knut Bernström - Swedish ambassador to Venezuela (1963–1969), Spain (1973–1976) and Morocco (1976–1983)
- Mohammed Zakariya - an American master of Arabic calligraphy, best known for his work on the popular Eid U.S. postage stamp.
- Muhammad Abd-al-Rahman Barker (Philip Barker) - professor of Urdu, former chair of the University of Minnesota's Department of South Asian studies and creator of the Tékumel fantasy world.
- Murad Wilfred Hofmann - NATO official, converted From Catholicism
- Nicolas Anelka - French football player[
- Nuh Ha Mim Keller - from Catholicism to agnosticism to Sufism, Islamic scholar.[
- Queen Noor of Jordan (formerly Lisa Najeeb Halaby)[
- Olivier Saint-Jean see Tariq Abdul-Wahad below.
- Omar Bongo - Gabonese, President of Gabon.
- Omar Pasha - Ottoman general. Converted from Serbian Orthodoxy.
- Omar Sharif the Egyptian & International actor.
- Peter Murphy - vocalist of the goth/rock group Bauhaus, converted From Catholicism.
- Philip Barker or Muhammad Abd-al-Rahman Barker see above.
- Philippe Troussier - French, former football player & trainer of a Japanese football team
- Poncke Princen - Dutch soldier, later human rights activist, converted From Catholicism.
- Preacher Moss - Former Baptist, American comedian and comedy writer.
- Prince Buster, Jamaican singer and producer
- Radu cel Frumos - was the younger brother of Vlad Ţepeş (Dracula) and prince of the principality of Wallachia, converted From Catholicism
- René Guénon - French Author in the field of metaphysics, converted From Catholicism.
- Richard Colvin Reid - shoe bomber (convicted terrorist)
- Richard Thompson - British musician, best known for his guitar playing and songwriting.
- Robert D. Crane is the former adviser to the late President Richard Nixon, and is former Deputy Director (for Planning) of the U.S. National Security Council.
- Robin Padilla - Filipino actor.
- Roger Garaudy - French philosopher, converted From Catholicism.
- Rowland Allanson-Winn, 5th Baron Headley - British soldier and peer.[
- Rudolf Carl von Slatin - Anglo-Austrian soldier and administrator in the Sudan.
- Rustie Lee - British television chef and celebrity.
- Ruqaiyyah Waris Maqsood - British author, converted from Protestantism.
- Ryan G. Anderson - former Lutheran, convicted of charges of espionage for Al Qaeda
- Ryan Harris- football player for the Denver Broncos
- Salman the Persian A convert from Christianity who was previously Zoroastrian. In search for truth, he traveled to Syria to follow Christianity. Upon the death of his teachers, he was directed to head to Arabia, where he was told the final prophet will rise. He later converted to Islam and became one of Muhammad's first companions.
- Sana al-Sayegh, dean of the Science and Technology Faculty at Palestine International University, converted to Islam in August 2007. Fatah has accused its political rival Hamas of forcing the professor to convert from Christianity, a charge Hamas denies.
- Sarah Joseph - commentator on women's issues and founder of emel magazine, converted From Catholicism.
- Brad Terrence Jordan ("Scarface") - American rapper
- Silma Ihram - formerly a born again Baptist who is an Australian pioneer of Muslim education in the West, founder and former school Principal of the 'Noor Al Houda Islamic College', campaigner for racial tolerance, and Author.
- Siraj Wahaj - Former Baptist.African-American Imam, noted for his efforts to eliminate Brooklyn's drug problems.
- Sheila Musaji - founder of The American Muslim magazine.
- Suha Arafat - the wife of the late Palestinian Liberation Organization chairman, Yasser Arafat
- Suhaib Webb - American Islamic activist and speaker.
- Suleiman Pasha - French-born Egyptian commander.
- Sultaana Freeman - sued the state of Florida for niqab restrictions.
- Tariq Abdul-Wahad (Olivier Saint-Jean) - originally from France, former basketball player for the Mavericks and Kings
- Tawana Brawley (changed her name to Maryam Muhammad) - African American woman noted for claiming to have been raped by several white men, a claim determined to be a fabrication by a grand jury. Later in life she converted to Islam.
- Tekuder - Mongol leader of the Ilkhan empire who was formerly a Nestorian Christian
- Thomas J. Abercrombie - photographer
- Timothy Winter - prominent British Islamic thinker and scholar, and a lecturer in Islamic studies in the Faculty of Divinity at the University of Cambridge.
- Top Topham - rock guitarist from England.
- Torquato Cardilli - Italian ambassador, converted From Catholicism.
- Vincenzo Luvineri - American rapper and the lyricist behind the Philadelphia underground hip-hop group Jedi Mind Tricks, converted From Catholicism
- Wadih el-Hage born to a Maronite Christian family in Sidon, Lebanon, a former al-Qaeda member.
- William Abdullah Quilliam - 19th century British poet, ambassador and journalist.
- Willie Brigitte - French convert to Islam who associated with al-Qaeda in Pakistan and was possibly involved in a plot to conduct a terrorist operation in Australia.
- Will Ellis - American artist and scholar
- Yahiya Emerick - American Muslim scholar, President of the Islamic Foundation of North America, converted from Protestantism.
- Yasin Abu Bakr (Lennox Philip) - of Trinidad and Tobago, under trial for an attempted coup as of March 9, 2006
- Yusuf Estes - Former preacher and federal prison chaplain, converted from Protestantism.
- Yvonne Ridley - British journalist, from Anglicanism. She converted after being kidnapped and released by the Taliban