Philosophers born in the 20th century (and others important in the history of philosophy) listed alphabetically:

Note: This list has a minimal criterion for inclusion and the relevance to philosophy of some individuals on the list is disputed.

A Elisa Aaltola (born 1976) Richard Aaron (1901–1987) Gholamreza Aavani (born 1943) Nicola Abbagnano (1901–1990) Ruth Abbey (born 1961) Bijan Abdolkarimi (born 1963) Taha Abdurrahman (born 1944) Masao Abe (1915–2006) Henry D. Abelove (born 1945) Raziel Abelson (1921–2017) Miguel Abensour (1939–2017) Arash Abizadeh William Emmanuel Abraham (born 1934) David Abram (born 1957) Gerd B. Achenbach (born 1947) Peter Achinstein (born 1935) Hans Achterhuis (born 1942) Felicia Nimue Ackerman (born 1947) J. L. Ackrill (1921–2007) H. B. Acton (1908–1974) Carol J. Adams (born 1951) James Luther Adams (1901–1994) Marilyn McCord Adams (1943–2017) Maynard Adams (1919–2003) Robert Merrihew Adams (1937–2024) Peter Adamson (born 1972) Matthew Adler (born 1962) Mortimer J. Adler (1902–2001) Mantas Adomėnas (born 1972) Theodor Adorno (1903–1969) Sediq Afghan (born 1958) Michel Aflaq (1910–1989) Sylviane Agacinski (born 1945) Giorgio Agamben (born 1942) Joseph Agassi (1927–2023) Khurshid Ahmad (born 1932) Arif Ahmed Scott Aikin (born 1971) Timo Airaksinen (born 1947) Shabbir Akhtar (1960–2023) Lilli Alanen (1941–2021) David Albert (born 1954) Hans Albert (1921–2023) Rogers Albritton (1923–2002) Linda Martín Alcoff (born 1955) Virgil Aldrich (1903–1998) Gerda Alexander (1908–1994) Aleksandr Danilovich Aleksandrov (1912–1999) Robert Alexy (1945–2026) Keimpe Algra (born 1959) Lucy Allais George James Allan (born 1935) Trevor Allan (born 1955) Amy Allen Anita L. Allen (born 1953) Diogenes Allen (1932–2013) William B. Allen (born 1944) Henry E. Allison (1937–2023) Ferdinand Alquié (1906–1985) William Alston (1921–2009) Jimmy Altham (born 1944) Louis Althusser (1918–1990) Thomas J. J. Altizer (1927–2018) Alexander Altmann (1906–1987) Peter Alward (born 1964) Alice Ambrose (1906–2001) Karl Ameriks (born 1947) Roger T. Ames (born 1947) Günther Anders (1902–1992) Alan Ross Anderson (1925–1973) C. Anthony Anderson (born 1940) Elizabeth S. Anderson (born 1959) John Mueller Anderson (1914–1999) Pamela Sue Anderson (1955–2017) R. Lanier Anderson Judith Andre Kristin Andrews (born 1971) Antanas Andrijauskas (born 1948) Irving Anellis (1946–2013) Ian Angus (born 1949) Loreta Anilionytė Julia Annas (born 1946) G. E. M. Anscombe (1918–2001) Keith Ansell-Pearson (born 1960) Dario Antiseri (born 1940) Maria Rosa Antognazza (born 1964) John P. Anton (1920–2014) G. Aldo Antonelli (1962–2015) Louise Antony Karl-Otto Apel (1922–2017) Kwame Anthony Appiah (born 1954) Richard Appignanesi (born 1940) Richard E. Aquila (born 1944) Lennart Åqvist (born 1932) István Aranyosi (born 1975) Reza Davari Ardakani (born 1933) Hannah Arendt (1906–1975) Türker Armaner (born 1968) Leslie Armour (1931–2014) A. H. Armstrong (1909–1997) David Malet Armstrong (1926–2014) John Armstrong (born 1966) Juan Arnau (born 1968) Richard Arneson Rudolf Arnheim (1904–2007) Raymond Aron (1905–1983) Robert Arp (born 1970) Nomy Arpaly (born 1973) Robert Arrington (1938–2015) Kenneth Arrow (1921–2017) Zaki al-Arsuzi (1899–1968) Sergei N. Artemov (born 1951) John Arthur (1946–2007) Mariano Artigas (1938–2006) Adil Asadov (born 1958) Molefi Kete Asante (born 1942) Karl Aschenbrenner (1911–1988) Pandurang Shastri Athavale (1920–2003) Margaret Atherton (born 1943) George N. Atiyeh (1923–2008) Ronald Field Atkinson (1928–2005) Henri Atlan (born 1931) Syed Muhammad Naquib al-Attas (born 1931) Robin Attfield (born 1931) Elspeth Attwooll (born 1943) Gwenaëlle Aubry (born 1971) Robert Audi (born 1941) Lene Auestad (born 1973) John Langshaw Austin (1911–1960) Randall Auxier (born 1961) Armen Avanessian (born 1973) Jeremy Avigad (born 1968) Anita Avramides (born 1952) Kostas Axelos (1924–2010) Francisco J. Ayala (1934–2023) Alfred Jules Ayer (1910–1989) Michael R. Ayers (born 1935) Hiroki Azuma (born 1971) Joxe Azurmendi (born 1941) Jody Azzouni (born 1954)

B Harriet Baber (born 1950) Babette Babich (born 1956) Rebeca Baceiredo (born 1979) Kent Bach (born 1943) Bronisław Baczko (1924–2016) Alain Badiou (born 1937) Julian Baggini (born 1968) Archie J. Bahm (1907–1996) Annette Baier (1929–2012) Kurt Baier (1917–2010) Moya Bailey Alan Baker Gordon Park Baker (1938–2002) Lynne Rudder Baker (1944–2017) Albena Bakratcheva (born 1961) Gopal Balakrishnan (born 1966) Tom Baldwin (born 1947) Étienne Balibar (born 1942) Renford Bambrough (1926–1999) Hassan al-Banna (1906–1949) Michael Banner (born 1961) Yehoshua Bar-Hillel (1915–1975) Dorit Bar-On (born 1955) Karen Barad (born 1956) Amiri Baraka (1934–2014) José Barata-Moura (born 1948) Renaud Barbaras (born 1955) Ian Barbour (1923–2013) Alejandro Bárcenas Sidi Mohamed Barkat (born 1948) Jason Barker (born 1971) Stephen F. Barker (1927–2019) Elizabeth Barnes Hazel Barnes (1915–2008) Jonathan Barnes (born 1942) Marcia Baron (born 1955) William Barrett (1913–1992) Eduardo Barrio Phillip Barron Brian Barry (1936–2009) Christian Barry Norman P. Barry (1944–2008) Roland Barthes (1915–1980) Lauren Swayne Barthold (born 1965) Sandra Bartky (1935–2016) Steven James Bartlett (born 1945) W. W. Bartley III (1934–1990) Renate Bartsch (born 1939) Shadi Bartsch (born 1966) Jon Barwise (1942–2000) Jacques Barzun (1907–2012) David Basinger (born 1947) Diderik Batens (born 1944) Gregory Bateson (1904–1980) David Batstone (born 1958) Jean Baudrillard (1929–2007) Nancy Bauer (born 1960) Zygmunt Bauman (1925–2017) Charles A. Baylis (1902–1975) Francoise Baylis (born 1961) Jc Beall (born 1966) Monroe Beardsley (1915–1985) Tom Beauchamp (born 1939) Jean Beaufret (1907–1982) Emily Beausoleil Simone de Beauvoir (1908–1986) Anthony Beavers (born 1963) William Bechtel (born 1951) Lewis White Beck (1913–1997) Gerhold K. Becker (born 1943) Lawrence C. Becker (1939–2018) Francis J. Beckwith (born 1960) Hugo Bedau (1926–2012) Mark Bedau (born 1950) Helen Beebee (born 1968) Hasna Begum (1935–2020) Ernst Behler (1928–1997) Werner Beierwaltes (1931–2019) Frederick C. Beiser (born 1949) Charles Beitz (born 1949) Daniel Bell (1919–2011) John Lane Bell (born 1945) Shannon Bell (born 1955) Robert N. Bellah (1927–2013) Kathryn Sophia Belle (born 1978) Nuel Belnap (born 1930) Yemima Ben-Menahem (born 1946) Aaron Ben-Ze'ev (born 1949) Paul Benacerraf (born 1931) Linos Benakis (born 1928) José Benardete (1928–2016) Seth Benardete (1930–2001) David Benatar (born 1966) Seyla Benhabib (born 1950) Piers Benn (born 1962) Jonathan Bennett (born 1930) Geoffrey Bennington (born 1956) Alain de Benoist (born 1943) Bruce Ellis Benson (born 1960) Sergio Benvenuto (born 1948) Floris van den Berg (born 1973) Peter L. Berger (1929–2017) Frithjof Bergmann (1930–2021) Gustav Bergmann (1906–1987) Michael Bergmann (born 1964) Lars Bergström Arnold Berleant (born 1932) Isaiah Berlin (1909–1997) Marshall Berman (1940–2013) José Benardete (1928–2016) Seth Benardete (1930–2001) Robert Bernasconi (born 1950) Walter Berns (1919–2015) Andrew Bernstein (born 1949) Jay Bernstein (born 1947) Mark H. Bernstein Richard J. Bernstein (born 1932) Marcus Berquist (1934–2010) Wendell Berry (born 1934) Ludwig von Bertalanffy (1901–1972) Peter Anthony Bertocci (1910–1989) Steven Best (born 1955) Gábor Betegh (born 1968) Richard Bett Mark Bevir (born 1963) Jean-Yves Béziau (born 1965) Homi K. Bhabha (born 1949) Roy Bhaskar (1944–2014) Nalini Bhushan Vladimir Bibikhin (1938–2004) Cristina Bicchieri (born 1950) Jacques Bidet (born 1935) Jean Biès (1933–2014) Simone Bignall Anat Biletzki (born 1952) Akeel Bilgrami (born 1950) Purushottama Bilimoria Nikola Biller-Andorno Katalin Bimbó (born 1963) Harry Binswanger (born 1944) Alexander Bird (born 1964) Garrett Birkhoff (1911–1996) Peg Birmingham Jeffrey Bishop (born 1967) Frode Alfson Bjørdal (born 1944) Max Black (1909–1988) Simon Blackburn (born 1944) Russell Blackford (born 1954) Oliva Blanchette (1929–2021) Patricia Blanchette Maurice Blanchot (1907–2003) Joseph Leon Blau (1909–1986) David Blitz Ned Block (born 1942) Allan Bloom (1930–1992) Lawrence Blum (born 1943) Albert Blumberg (1906–1997) Hans Blumenberg (1920–1996) Andy Blunden (born 1945) Norberto Bobbio (1909–2004) Chris Bobonich (born 1960) Susanne Bobzien (born 1960) Jozef Maria Bochenski (1902–1995) Remo Bodei (1938–2019) Margaret Boden (born 1936) James Bogen Paul Boghossian (born 1957) Peter Boghossian David Bohm (1917–1992) Gernot Böhme (born 1937) Hilary Bok (born 1959) Sissela Bok (born 1934) Alisa Bokulich Daniel Bonevac Dietrich Bonhoeffer (1906–1945) Laurence BonJour (born 1943) Murray Bookchin (1921–2006) George Boolos (1940–1996) William James Booth Susan Bordo Michael Bordt (born 1960) Emma Borg Albert Borgmann (born 1937) Eugene Borowitz (1924–2016) Giovanna Borradori Lisa Bortolotti (born 1974) David Bostock (1936–2019) Inga Bostad (born 1963) Nick Bostrom (born 1973) George Botterill (born 1949) Eileen Hunt Botting (born 1971) Alain de Botton (born 1969) Tina Fernandes Botts Pierre Bourdieu (1930–2002) Jacques Bouveresse (1940–2021) Luc Bovens David Frederick Bowers (1906–1945) Andrew Bowie (born 1952) Bernard Boxill Jan Boxill (born 1939) Richard Boyd (1942–2021) Joseph A. Bracken (born 1930) Costica Bradatan Richard Bradley (born 1964) Michael Brady (born 1965) Rémi Brague (born 1947) Rosi Braidotti (born 1954) David Braine (1940–2017) Richard-Bevan Braithwaite (1900–1990) Theodore Brameld (1904–1987) Myles Brand (1942–2009) Robert Brandom (born 1950) Richard B. Brandt (1910–1997) Eva Brann (born 1929) Ray Brassier (born 1965) Michael Bratman (born 1945) Stephen E. Braude (born 1945) David Braybrooke (1924–2013) Geoffrey Brennan (born 1944) Jason Brennan (born 1979) Samantha Brennan Teresa Brennan (1952–2003) Bill Brewer Jean Bricmont (born 1952) Ingo Brigandt Harry Brighouse Liam Kofi Bright David O. Brink (born 1958) Susan Brison Luc Brisson (born 1946) Charles Francis Brittain Alexander Broadie Sarah Broadie (1941–2021) Dan W. Brock (1937–2020) May Brodbeck (1917–1983) Berit Brogaard (born 1970) Johannes Bronkhorst (born 1946) Stephen Bronner (born 1949) Thom Brooks (born 1973) John Broome (born 1947) Janet Broughton Harvey Brown (born 1950) Wendy Brown (born 1955) Kimberley Brownlee (born 1978) Bartosz Brożek (born 1977) Pascal Bruckner (born 1948) Robert Brumbaugh (1918–1992) Fernand Brunner (1920–1991) Brian Bruya (born 1966) Edwin Bryant (born 1957) Levi Bryant Jeffrey Bub (born 1942) Allen Buchanan (born 1948) Ian Buchanan (born 1969) James M. Buchanan (1919–2013) Gerd Buchdahl (1914–2001) Justus Buchler (1914–1991) Henry Bugbee (1915–1999) Mario Bunge (1919–2020) Martin Bunzl (born 1948) Tyler Burge (born 1946) Ronna Burger (born 1947) J. Peter Burgess (born 1961) John P. Burgess (born 1948) Teresa Blankmeyer Burke Arthur Burks (1915–2008) James Burnham (1905–1987) John Burnheim (1927–2023) Elizabeth Burns Myles Burnyeat (1939–2019) David Burrell (born 1933) Roderick D. Bush (1945–2013) Panayot Butchvarov (born 1933) Judith Butler (born 1956) Jeremy Butterfield (born 1954) Victor L. Butterfield (1904–1975) Stephen Butterfill Charles Butterworth (born 1938)

C Amílcar Cabral (1924–1973) Julio Cabrera Massimo Cacciari (born 1944) John Cage (1912–1992) Cheshire Calhoun Daniel Callahan (1930–2019) Joan Callahan (1946–2019) Agnes Callard (born 1976) Craig Callender (born 1968) J. Baird Callicott (born 1941) Elisabeth Camp Donald T. Campbell (1916–1996) John Campbell (born 1956)