There have been many philosophers in recorded history who were atheists. This is a list of atheist philosophers with articles in Wikipedia. Living persons in this list are people whose atheism is relevant to their notable activities or public life, and who have publicly identified themselves as atheists.
Zakī al-Arsūzī (1899-1968): Syrian philosopher, philologist, sociologist, historian, Arab nationalist, and one of the major founders of Ba'athism.
John Anderson (1893–1962): Scottish-born Australian philosopher, founder of the empirical philosophy known as 'Sydney realism'.
Hector Avalos (1958–): Mexican-American professor of Religious Studies at Iowa State University and author of several books about religion.
A. J. Ayer (1910–1989): British philosopher and an advocate of logical positivism. Though he viewed the concept of God existing as meaningless, he described himself as an atheist.
Alain Badiou (1937–): French philosopher.
Julian Baggini (1968–): British writer specialising in philosophy, author of Atheism: A Very Short Introduction.
Mikhail Bakunin (1814–1876): Russian philosopher, writer and anarchist.
Roland Barthes (1915–1980): French literary theorist, philosopher, linguist, critic and semiotician.
Georges Bataille (1897-1962): French intellectual and literary figure. He was the author of Story of the Eye, and his writings explored areas relating to philosophy, mysticism, and eroticism.
Bruno Bauer (1809–1882): German philosopher, theologian and historian, the first propounder of the Jesus myth hypothesis.
Jean Baudrillard (1929–2007): French sociologist, philosopher, cultural theorist, political commentator and photographer.
Simone de Beauvoir (1908–1986): French author and existentialist philosopher. Beauvoir wrote novels and monographs on philosophy, politics, social issues and feminism.
Jeremy Bentham (1748–1832): English author, jurist, philosopher, and legal and social reformer. He is best known for his advocacy of utilitarianism.
Simon Blackburn (1944–): British academic atheist philosopher known for his efforts to popularise philosophy.
Célestin Bouglé (1870–1940): French philosopher known for his role as one of Émile Durkheim's collaborators and a member of the L'Année Sociologique.
Yaron Brook (1961–): Israeli-born president and executive director of the Ayn Rand Institute.
Ludwig Büchner (1824–1899): German philosopher, physiologist and physician who became one of the exponents of 19th century scientific materialism.
Gustavo Bueno (1924-2016): Spanish philosopher who was a modern proponent of philosophical materialism.
Albert Camus (1913-1960): Algerian-born French absurdist philosopher and author. His non-fiction philosophical works include The Myth of Sisyphus and The Rebel.
Rudolf Carnap (1891–1970): German philosopher who was active in central Europe before 1935 and in the United States thereafter. He was a leading member of the Vienna Circle and a prominent advocate of logical positivism.
Robert Todd Carroll (1945–2016): American writer and academic, professor of philosophy at Sacramento City College until 1997, and keeper of the Skeptic's Dictionary website.
David Chalmers (1966–): Australian philosopher of mind.
Debiprasad Chattopadhyaya (1918–1993): Bengali Marxist philosopher.
Nikolay Chernyshevsky (1828–1889): Russian revolutionary democrat, materialist philosopher, critic, and socialist.
Randolph Clarke
Auguste Comte (1798–1857): French positivist thinker, credited with coining the term "sociologie" ("sociology").
André Comte-Sponville (1952–): French philosopher, author of L'Esprit de l'athéisme (2006) and The Little Book of Atheist Spirituality (2007).
Marquis de Condorcet (1743–1794): French philosopher, mathematician, and early political scientist who devised the concept of a Condorcet method.
Benedetto Croce (1866–1952): Italian philosopher and public figure.
Donald Davidson (1917–2003): American philosopher.
Gilles Deleuze (1925–1995): French philosopher of the late 20th century. From the early 1960s until his death, Deleuze wrote many influential works on philosophy, literature, film, and fine art.
Daniel Dennett (1942–): Philosopher of biology. Author of Breaking the Spell.
Jacques Derrida (1930–2004): Algerian-born French philosopher.
Henry Louis Vivian Derozio (1809–1831): Anglo-Indian poet and teacher.
John Dewey (1859–1952): American philosopher, psychologist and educational reformer whose ideas have been influential in education and social reform. Dewey was an important early developer of the philosophy of pragmatism and one of the founders of functional psychology. He was a major representative of progressive education and liberalism.
Diagoras of Melos (5th century BC): Ancient Greek poet and sophist known as the Atheist of Milos, who declared that there were no Gods.
Denis Diderot (1713–84): editor-in-chief of the Encyclopédie.
Theodore Drange (1934–): Philosopher of religion and Professor Emeritus at West Virginia University. Drange authored Nonbelief & Evil: Two arguments for the nonexistence of God.
Umberto Eco (1932-2016): Italian novelist, literary critic, and philosopher that wrote on semiotics. He was also the author of Foucault's Pendulum and The Name of the Rose.
Paul Edwards (1923–2004): Austrian-American moral philosopher and editor of The Encyclopedia of Philosophy.
Empedocles (c. 490–430 BC): Greek pre-Socratic philosopher and a citizen of Agrigentum, a Greek city in Sicily. Empedocles' philosophy is best known for being the originator of the cosmogenic theory of the four Classical elements.
Dylan Evans (1966–): British philosopher, known for his work on emotion and the placebo effect.
Fan Zhen (circa 450 – 515): Chinese philosopher remembered today for his treatise Shén Miè Lùn ("On the Annihilation of the Soul").
Ludwig Andreas Feuerbach (1804–1872): German philosopher whose major work, The Essence of Christianity, maintains that religion and divinity are projections of human nature.
Friedrich Karl Forberg (1770–1848): German philosopher and classical scholar.
Michel Foucault (1926–1984): French philosopher and social theorist famous for his influential analysis of power and discourse. He is best known for his revolutionary philosophical analyses of social institutions such as Discipline and Punish and The History of Sexuality.
José Ortega y Gasset (1883-1955): Spanish philosopher, author, and essayist who wrote The Revolt of the Masses.
William Godwin (1756–1836): English journalist, political philosopher and novelist. He is considered one of the first exponents of utilitarianism, and the first modern proponent of anarchism.
Rebecca Goldstein (1950-): American philosopher of science, and author of Thirty-Six Arguments for the Existence of God: A Work of Fiction.
A. C. Grayling (1949–): British philosopher and author of, among others, Against All Gods: Six Polemics on Religion and an Essay on Kindness.
John Harris (1947–): British professor of bioethics at the University of Manchester, and member of the UK Human Genetics Commission.
Sam Harris (1967–): American author, philosopher, and neuroscientist. He is the co-founder and CEO of Project Reason.
Claude Adrien Helvétius (1715–71): French philosopher whose ethical and social views helped shape the school of utilitarianism later made famous by Jeremy Bentham.
Heraclitus (c. 535 BC–c. 475 BC): pre-Socratic Greek philosopher, a native of the Greek city Ephesus, Ionia, on the coast of Asia Minor. He was of distinguished parentage. Little is known about his early life and education, but he regarded himself as self-taught and a pioneer of wisdom. From the lonely life he led, and still more from the riddling nature of his philosophy and his contempt for humankind in general, he was called "The Obscure" and the "Weeping Philosopher".
Eric Hoffer (1902–1983): American moral and social philosopher. He was the author of ten books and was awarded the Presidential Medal of Freedom in February 1983. His first book, The True Believer, published in 1951, was widely recognized as a classic, receiving critical acclaim from both scholars and laymen.
Baron d'Holbach (1723–1789): French philosopher and encyclopedist, most famous as being one of the first outspoken atheists in Europe.
David Hume (1711–76): Scottish Enlightenment philosopher and historian.
Eino Kaila (1890-1958): Finnish philosopher, psychologist, and critic who contributed to a variety of fields, including physics and theatre.
Alexandre Kojève (1902–1968): Russian-born French philosopher and statesman.
Leandro Konder (1936–2014): Brazilian Marxist philosopher.
Julia Kristeva (1941–): Bulgarian-French philosopher, literary critic, psychoanalyst, sociologist, feminist and novelist.
Corliss Lamont (1902–1995): American humanist and Marxist philosopher, and advocate of various left-wing and civil liberties causes.
Bernard-Henri Lévy (b. 1948): French-Jewish co-founder of the Nouveaux Philosophes (New Philosophers) movement in 1976.
David Kellogg Lewis (1941–2001): American philosopher. One of the leading thinkers of the second half of the 20th century.
Peter Lipton (1954–2007): British philosopher, the Hans Rausing Professor and Head of the Department of History and Philosophy of Science at Cambridge University until his unexpected death in November 2007. He was "one of the leading philosophers of science and epistemologists in the world."
Jean-François Lyotard (1924–1998): French philosopher, sociologist and literary theorist
Kazimierz Łyszczyński (also known in English as "Casimir Liszinski"; 1634–89): Polish-Lithuanian nobleman and philosopher, author of a philosophical treatise, De non existentia Dei (On the Non-existence of God), who was condemned to death and brutally executed for atheism.
John Leslie Mackie (1917–1981): Australian philosopher who specialized in meta-ethics as a proponent of moral skepticism. Wrote The Miracle of Theism, discussing arguments for and against theism and concluding that theism is rationally untenable.
Michael Martin (1932–2015): analytic philosopher and professor emeritus at Boston University, author of, amongst others, Atheism: A Philosophical Justification (1989) and The Impossibility of God (2003).
Harriet Martineau (1802–1876): an English writer and philosopher, renowned in her day as a controversial journalist, political economist, abolitionist and lifelong feminist.
Karl Marx (1818–1883): philosopher, political economist, sociologist, humanist, political theorist and revolutionary. Often called the father of communism, Marx was both a scholar and a political activist. In 1843, Karl Marx published Contribution to Critique of Hegel's Philosophy of Right, in which he dealt more substantively with religion, describing it as "the opiate of the people".
Colin McGinn (1950–): British philosopher and author, best known for his work in the philosophy of mind.
Jean Meslier (1678–1733): French village Catholic priest who was found, on his death, to have written a book-length philosophical essay, entitled Common Sense but commonly referred to as Meslier's Testament, promoting atheism.
Julien Offray de La Mettrie (1709–51): French physician and philosopher, earliest materialist writer of the Enlightenment, claimed as a founder of cognitive science.
John Stuart Mill (1806–1873): The famous philosopher declared his atheism, and that of his father, in a famous essay published posthumously.
Ted Nelson (1937–): American sociologist, philosopher, and pioneer of information technology. He coined the terms "hypertext" and "hypermedia" in 1963 and published them in 1965.
Michael Neumann (1946–): American professor of philosophy at Trent University, noted for his work on utilitarianism, rationality and anti-Semitism.
Kai Nielsen (1926–): adjunct professor of philosophy at Concordia University in Montreal and professor emeritus of philosophy at the University of Calgary.
Friedrich Nietzsche (1844–1900): German philosopher whose Beyond Good and Evil sought to refute traditional notions of morality. Nietzsche penned a memorable secular statement of the Doctrine of Eternal Recurrence in Thus Spoke Zarathustra and is forever associated with the phrase, "God is dead" (first seen in his book, The Gay Science).
Piergiorgio Odifreddi (1950–): Italian mathematician and popular science writer.
Michel Onfray (1958–): French philosopher, founder of Université populaire de Caen, and author of Atheist Manifesto: The Case Against Christianity, Judaism, and Islam.
Graham Oppy (1960–): Australian philosopher and Associate Dean of Research at Monash University, and Associate Editor of the Australasian Journal of Philosophy. His main area of research is the philosophy of religion.
Leonard Peikoff (1933–): an Objectivist philosopher, Ayn Rand's legal heir. He is a former professor of philosophy, a former radio talk show host, and founder of the Ayn Rand Institute.
Herman Philipse (1951–): professor of philosophy at Utrecht University in the Netherlands. Philipse has written many philosophical works in Dutch, including the widely read Atheist Manifesto and the Unreasonableness of Religion (Atheistisch manifest & De onredelijkheid van religie).
Hilary Putnam (1926–2016): American philosopher, mathematician, and computer scientist who was a central figure in analytic philosophy from the 1960s, especially in philosophy of mind, philosophy of language, philosophy of mathematics, and philosophy of science.
Willard Van Orman Quine (1908–2000): American philosopher and logician.
Thanthai Periyar (1879–1973): Indian philosopher, social activist, politician and businessman affectionately called by his followers as Periyar or E. V. R., who started the Self-Respect Movement or the Dravidian Movement. He is also the founder of political party, Dravidar Kazhagam Periyar E. V. Ramasamy
James Rachels (1941–2003): American philosopher who specialized in ethics.
Frank P. Ramsey (1903–1930): British mathematician who also made significant contributions in philosophy and economics.
Ayn Rand (1905–1982): Russian-American founder of Objectivism and novelist.
John Rawls (1921–2002): American philosopher and a leading figure in moral and political philosophy.
Jean-François Revel (1924–2006): French politician, journalist, author, prolific philosopher and member of the Académie française.
Richard Rorty (1931–2007): American philosopher.
Alexander Rosenberg (1946–): Philosopher of science. Author of The Atheist's Guide to Reality.
Michael Ruse (1940–): Philosopher of biology, known for his work on the argument between creationism and evolutionary biology.
Bertrand Russell (1872–1970): British philosopher, logician, mathematician, historian, and social critic.
Marquis de Sade (1740–1814): French aristocrat, revolutionary politician, philosopher, and writer, famous for his libertine sexuality.
Nathan Salmon (1951–): American philosopher and distinguished professor at the University of California, Santa Barbara, whose writings include work on fictional characters and mythical objects.
George Santayana (1863–1952): Philosopher in the naturalist and pragmatist traditions who called himself a "Catholic atheist."
Jean-Paul Sartre (1905–1980): French existentialist philosopher, dramatist and novelist who declared that he had been an atheist from age twelve. Although he regarded God as a self-contradictory concept, he still thought of it as an ideal toward which people strive. He rejected the Nobel Prize for Literature in 1964. According to Sartre, his most-repeated summary of his existentialist philosophy, "Existence precedes essence," implies that humans must abandon traditional notions of having been designed by a divine creator.
Fernando Savater (born 1947): Spanish philosopher and essayist.
Moritz Schlick (1882–1936): German philosopher, physicist and the founding father of logical positivism and the Vienna Circle.
Michael Schmidt-Salomon (1967–): German author, philosopher, and public relations manager. As chairman of the Giordano Bruno Foundation, a humanist organization that is critical of religion"
Arthur Schopenhauer (1788–1860): German philosopher and author of the book The World as Will and Representation.
John Searle (1932–): American philosopher, Slusser Professor of Philosophy at the University of California, Berkeley, widely noted for contributions to the philosophy of language, the philosophy of mind, and to social philosophy.
Boris Sidis (1867–1923): Ukrainian psychologist, physician, psychiatrist, and philosopher of education.
Peter Singer (1946–): Australian utilitarian philosopher, proponent of animal rights, and Ira W. DeCamp Professor of Bioethics at Princeton University.
B. F. Skinner (1904–1990): American psychologist, behaviorist, author, inventor, social philosopher and poet.
George H. Smith (1949–): Libertarian philosopher, author and educator. Smith authored Atheism: The Case Against God.
Quentin Smith (1952–): Philosopher of physics. Smith co-authored the book Theism, Atheism and Big Bang Cosmology with William Lane Craig.
Herbert Spencer (1820–1903), English philosopher, biologist, sociologist, and prominent classical liberal political theorist of the Victorian era.
Max Stirner (1806–1856): German philosopher, who ranks as one of the fathers of nihilism, existentialism, post-modernism and anarchism, especially of individualist anarchism. Stirner's main work is The Ego and Its Own.
Raymond Tallis (1946–): British philosopher, poet, novelist, gerontologist and cultural critic. He has focused mainly on the philosophy of mind.
Theodorus the Atheist (lived around 300 BC): Philosopher of the Cyrenaic school who taught that the goal of life was to obtain joy and avoid grief.
Lucilio Vanini (1585–1619): Italian philosopher, brutally executed for his atheism.
Sir Bernard Williams FBA (1929–2003): British philosopher, widely cited as the most important British moral philosopher of his time.
Sherwin Wine (1928–2007): Founder of the non-theistic Society for Humanistic Judaism, who has also called himself an "ignostic".
Slavoj Žižek (1949–): Slovenian sociologist, postmodern philosopher, and cultural critic.
