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 (born 1937) 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 (born 1927) Khurshid Ahmad (born 1932) Arif Ahmed Scott Aikin (born 1971) Timo Airaksinen (born 1947) Shabbir Akhtar (born 1960) Lilli Alanen (1941–2021) Rachel Albeck-Gidron (born 1960) David Albert (born 1954) Hans Albert (born 1921) Rogers Albritton (1923–2002) Linda Martín Alcoff (born 1955) Virgil Aldrich (1903–1998) Gerda Alexander (1908–1994) Aleksandr Danilovich Aleksandrov (1912–1999) Robert Alexy (born 1945) 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 (born 1937) 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 Aquila (born 1944) Lennart Åqvist (born