# List of converts to nontheism

This list of converts to nontheism includes individuals who formerly identified with a religious affiliation but have since then openly rejected their former religion and theism and became nontheist. The list is organised by former religious affiliation and theism.

## Former Buddhists

| Name | Country | Notes |
| Khorloogiin Choibalsan | Mongolia | Communist revolutionary, politician, and leader of Mongolia. |
| Mao Zedong | China | Communist revolutionary, politician and socio-political theorist and founding father of the People's Republic of China |

## Former Christians

| Name | Country | Notes |
| John Abraham | India | Bollywood actor born to a Zoroastrian mother and a Marthomite Syrian Christian father; left Christianity and became an agnostic atheist. |
| Amy Adams | United States | American actress; raised as a Mormon until her parents divorced in 1985 and left the church. |
| Sami Aldeeb | Switzerland | Swiss lawyer and author of many books and articles on Arab and Islamic law born to a Palestinian Christian family; left Christianity and became a nontheist. |
| Jacinda Ardern | New Zealand | Prime minister of New Zealand; raised Mormon, became agnostic. |
| Javier Bardem | Spain | Actor; raised Catholic, became an agnostic. |
| Dan Barker | United States | Former preacher turned atheist activist and co-president of the Freedom From Religion Foundation. |
| Ingmar Bergman | Sweden | Film director whose father was a parson; stated he lost his faith at age 8, but did not fully come to terms with that until making Winter Light. |
| Napoleon Bonaparte | France | Emperor of France from 1804 to 1815; was raised Catholic. |
| Martin Bormann | Nazi Germany | Nazi official and right-hand man of Adolf Hitler; raised Protestant. |
| Bob Brown | Australia | Australian senator and former Parliamentary Leader of the Australian Greens. |
| Dan Brown | United States | American author, raised Episcopalian but gravitated away from religion. |
| Warren Buffett | United States | American business magnate, investor, and philanthropist, who is the chairman and CEO of Berkshire Hathaway. He is considered one of the most successful investors in the world and has a net worth of US$88.9 billion as of December 2019, making him the fourth-wealthiest person in the world. Was raised as a Presbyterian, but has since described himself as agnostic. |
| Bart Campolo | United States | Humanist chaplain and son of pastor Tony Campolo. |
| Fidel Castro | Cuba | Cuban communist revolutionary and politician; Prime Minister of Cuba (1959–1976), and President (1976–2008); baptized into the Roman Catholic Church at the age of eight; later became an atheist. |
| Nikolay Chernyshevsky | Russia | Revolutionary democrat, materialist philosopher, critic, and socialist. |
| Helen Clark | New Zealand | Prime Minister; raised Presbyterian, became an agnostic. |
| George Clooney | United States | Actor; raised Catholic, became an agnostic. |
| Pat Condell | United Kingdom | Writer, political commentator, comedian and atheist internet personality. |
| Marie Curie | Poland | Physicist and chemist; raised Catholic, became an agnostic. |
| Charles Darwin | United Kingdom | British naturalist, geologist and biologist, best known for his contributions to the science of evolution; raised as a Unitarian, later became an agnostic. |
| Richard Dawkins | United Kingdom | British ethologist, evolutionary biologist and author; was brought up as an Anglican until ceasing to believe in a deity in his teens, concluding that the theory of evolution was a better explanation for life's complexity. |
| Emily Deschanel | United States | American actress. |
| Jerry DeWitt | United States | Former pastor of two evangelical churches; publicly converted to atheism in 2011 after twenty-five years of Christian ministry. He has written a book based on his career and experiences entitled Hope After Faith. |
| Matt Dillahunty | United States | Public speaker, raised Southern Baptist, considered becoming a minister. His religious studies, instead of bolstering his faith as he intended, led him to no longer believe in Christianity and then all religions. |
| Jonathan Edwards | United Kingdom | Former British triple jumper; former Olympic, Commonwealth, European and World champion; formerly a devout Christian, and even presented episodes of the BBC Christian worship programme Songs of Praise. |
| Anthony Fauci | United States | American physician-scientist and immunologist who served as the director of the U.S. National Institute of Allergy and Infectious Diseases (NIAID) and the chief medical advisor to the president, grew up Catholic, but then considered himself a humanist |
| Ricky Gervais | United Kingdom | Actor, abandoned Christianity at the age of eight. |
| Julia Gillard | Australia | Prime Minister; brought up in the Baptist faith, then became an atheist |
| Mikhail Gorbachev | Soviet Union | Ruler of the USSR; baptized Russian Orthodox, became an atheist. |
| Bob Hawke | Australia | Former politician who served as the 23rd Prime Minister of Australia from 1983 to 1991. |
| Francois Hollande | France | French president, was raised Catholic, but became an agnostic later in life. He now considers himself to be an atheist, but still professes respect for all religious practices. |
| Kim Il Sung | North Korea | North Korean leader, was raised in a Presbyterian family. |
| Abraham Kovoor | India | Indian professor and rationalist, noted for Abraham Kovoor's challenge. |
| Vladimir Lenin | Soviet Union | Russian revolutionary, then ruler of the Soviet Union; was baptized into Orthodox Christianity but later renounced his belief in God. |
| Glenn Loury | United States | American academic and scholar. |
| Emmanuel Macron | France | President of France, raised in a non-religious family, he was baptized a Roman Catholic at his own request at age 12. |
| Karl Marx | Germany | Philosopher; baptised into the Lutheran Church. |
| Joseph McCabe | United Kingdom | Ordained as "Father Antony", but left the Catholic priesthood and abandoned theism; then wrote The Totalitarian Church of Rome and stated that "Atheism will in this century be the common attitude of civilized people." |
| Jennette McCurdy | United States | American singer-songwriter, filmmaker, and former actress; was raised in The Church of Jesus Christ of Latter-day Saints, but left the religion in her early adulthood, citing fundamental disagreements with church doctrine. |
| François Mitterrand | France | President of France; his family was devoutly Catholic, became agnostic following an observation of Nazi concentration camps at the end of World War II. |
| Benito Mussolini | Italy | Italian politician, journalist and leader of the National Fascist Party, ruling the country as Prime Minister from 1922 to his ousting in 1943. |
| Friedrich Nietzsche | Germany | German philosopher, poet, cultural critic and classical philologist. |
| Millosh Gjergj Nikolla | Albania | Albanian poet and writer; trained to be an Orthodox priest, but became an atheist. |
| Nathan Phelps | Canada | American Canadian author and LGBT rights activist; son of Fred Phelps. |
| Brad Pitt | United States | Actor; raised as a Southern Baptist. |
| Alfred Rosenberg | Nazi Germany | Leader of NSDAP Office of Foreign Affairs; raised Protestant. |
| Maikel Nabil Sanad | Egypt | Egyptian political activist, blogger, and a former political prisoner. |
| Michael Shermer | United States | American science writer, historian of science, founder of The Skeptics Society, and editor-in-chief of its magazine Skeptic. |
| Morgan Spurlock | United States | American documentary filmmaker, humorist, television producer, screenwriter and playwright, raised Methodist but became agnostic later in life. |
| Joseph Stalin | Soviet Union | Russian revolutionary, then ruler of the USSR; studied to be an Orthodox priest but became an atheist after reading Karl Marx's books. |
| Meryl Streep | United States | American actress. |
| Julius Streicher | Nazi Germany | Nazi official and founder of the antisemitic newspaper Der Stürmer; raised Catholic. |
| Chris Stuckmann | United States | American film critic, filmmaker and YouTuber; raised as a Jehovah's Witnesses, but abandoned the faith around 2011, due to the faith's authority have been suppressing his hobby on film reviewing. And since referring himself as a areligious. |
| Julia Sweeney | United States | American actress, comedian and author. |
| Charles Templeton | Canada | Co-founder of Youth for Christ; rejected Christianity for agnosticism after a struggle with doubts. |
| Josip Broz Tito | Yugoslavia | Leader of the Yugoslav Partisans (Europe's most effective anti-Nazi resistance movement); revolutionary and statesman; Roman Catholic who became an atheist. |
| Michael J. Totten | United States | American journalist and author. |

## Former Hindus

* Kamal Haasan – despite being born into a Hindu Brahmin family, declared himself an atheist
* Goparaju Ramachandra Rao – Indian activist for atheism; wrote in We Become Atheists, "I was conventionally orthodox and superstitious in the days of my boyhood. I believed in the claims of divine revelations by my parental aunt."
* Ram Gopal Varma – born into a Hindu family; claimed himself atheist
* Vinayak Damodar Savarkar – president of Hindu Mahasabha; founder of the Hindutva movement; atheist; did not define "Hindutva" by religion, and used to publicly advertise lectures on atheism and the non-existence of God
* Shreela Flather, Baroness Flather of Windsor and Maidenhead – first Hindu woman in British politics; described herself as a "Hindu atheist"
* Rajeev Khandelwal – Indian film and television actor; states himself an atheist
* Doja Cat - American rapper and singer; born to an Ashkenazi Jewish mother and practiced Hinduism for 4 years.

## Former Jews

| Name | Country | Notes |
| Jack Cohen | United Kingdom | Reproductive biologist; worked with science fiction writers; co-wrote books including Evolving the Alien; his grandfather was a rabbi; he attended synagogue for cultural reasons, but was an atheist |
| Émile Durkheim | France | Sociologist descended from a long line of rabbis; had an interest in religion as a social phenomenon; wrote The Elementary Forms of the Religious Life; was an agnostic by adulthood; besides an interest, he saw some value in religion, but stated, "We must discover the rational substitutes for these religious notions that for a long time have served as the vehicle for the most essential moral ideas." |
| Al Goldstein | United States | Pornographer; widely regarded as the father of Internet pornography |
| Rebecca Goldstein | United States | Novelist and professor of philosophy; born into an Orthodox Jewish family; has an older brother who is an Orthodox rabbi; in 2011 she was named AHA's Humanist of the Year, and is an atheist |
| Carlo Strenger | Switzerland | Swiss-Israeli psychologist who describes his transition from Orthodox Judaism to secular atheism as the defining experience of his life |

## Former Muslims

* As'ad Abu Khalil – Lebanese professor of political science at California State University, Stanislaus; describes himself as an "atheist secularist"
* Zackie Achmat – South African anti-HIV/AIDS activist; founder of the Treatment Action Campaign
* Ismail Adham – Egyptian writer and philosopher
* Mina Ahadi – Iranian-born pacifist, founder of the German organization Central Council of Ex-Muslims
* Javed Akhtar – Indian writer, lyricist, TV show host, secular and nationalist activist
* Mirza Fatali Akhundov – 19th-century Azerbaijani playwright and philosopher
* Waleed Al-Husseini – Qalqilyan blogger, writer, secular humanist, and founder of the Council of Ex-Muslims of France
* Ramiz Alia – Albanian communist leader and former president of Albania
* Bisi Alimi – Nigerian gay rights activist based in the United Kingdom
* Kareem Amer – Egyptian blogger
* Mustafa Kemal Atatürk – Turkish field marshal, statesman, secularist reformer, and author; a deist or an atheist
* Humayun Azad – Bangladeshi author, poet, scholar and linguist
* Hassan Bahara – Moroccan-Dutch writer
* Pelin Batu – Turkish actress and television personality
* Hafid Bouazza – Moroccan-Dutch writer
* Parvin Darabi – Iranian-born American writer and women's rights activist
* Turan Dursun – Turkish author; was once a Turkish mufti; later authored many books critical of Islam
* Afshin Ellian – Iranian professor
* Enver Hoxha – Communist dictator who declared Albania the first atheist state
* Ismail Kadare – World-renowned Albanian writer
* Sarmad Kashani – 17th-century mystical poet and sufi saint; arrived from Persia to India; beheaded for assumed heresy by the Mughal emperor Aurangzeb; renounced Judaism, briefly converting to Islam and then Hinduism; later denounced all religions and rejected belief in God
* Raheem Kassam – British conservative activist
* Al-Ma'arri – blind Arab philosopher, poet and writer
* Lounès Matoub – Algerian Berber Kabyle singer and activist
* Asif Mohiuddin – Bangladeshi blogger and secularist
* Seema Mustafa – Indian journalist, political editor and Delhi Bureau Chief of The Asian Age newspaper
* Maryam Namazie – Iranian communist, political activist and leader of the British apostate-organization Council of Ex-Muslims of Britain
* Kumail Nanjiani – Pakistani American stand-up comic and actor
* Taslima Nasrin – Bangladeshi author, feminist, human rights activist and secular humanist
* Armin Navabi – Iranian-born atheist and secular activist, author, podcaster and vlogger, known as founder of the popular website Atheist Republic.
* Aziz Nesin – Turkish humorist and author of more than 100 books
* Barack Obama Sr. – Kenyan senior governmental economist, and the father of Barack Obama
* Catherine Perez-Shakdam – French Jewish journalist, political analyst and commentator; formerly a marital convert to Sunni Islam
* Ibn al-Rawandi – 9th-century early skeptic of Shia Islam, of Persian origin
* Salman Rushdie – British-Indian novelist and essayist
* Nyamko Sabuni – Politician in Sweden
* Zohra Sehgal – Indian actress who has appeared in several Hindi and English language films
* Anwar Shaikh – British author of Pakistani descent
* Dr. Younus Shaikh – Pakistani medical doctor, human rights activist, rationalist and free-thinker
* Ali Soilih – Comorian socialist revolutionary; president of the Comoros
* Wafa Sultan – Syrian-born American psychiatrist; controversial critic of Islam; describes herself as a "secular humanist"
* Arzu Toker – Turkish-born German writer, journalist, publicist and translator; founder of the German organization Central Council of Ex-Muslims
* Cenk Uygur – Turkish-American co-founder and main host of the progressive talk radio show The Young Turks; agnostic
* Ibn Warraq – British Pakistani secularist author; founder of the Institute for the Secularisation of Islamic Society
* Rishvin Ismath – Sri Lankan atheist and humanist; co-founder of Council of Ex-Muslims of Sri Lanka

## Former Shintos

| Name | Country | Notes |
| Hideki Tojo | Japan | Politician, military general, and Prime Minister of Japan. |