1930 in philosophy

• Paul Dirac, Principles of Quantum Mechanics (1930)

• Robert Musil, The Man Without Qualities (1930-1942)

• March 8 – Ernst Tugendhat (died 2023)
• March 12 – Kurt Flasch
• April 9 – Nathaniel Branden (died 2014)
• April 12 – Bryan Magee (died 2019)
• May 3 – Luce Irigaray
• June 13 – Paul Veyne (died 2022)
• July 11 – Harold Bloom (died 2019)
• July 15 – Jacques Derrida (died 2004)
• July 19 – Daniel Callahan (died 2019)
• August 1 – Pierre Bourdieu (died 2002)
• September 14 – Allan Bloom (died 1992)
• September 28 – Immanuel Wallerstein (died 2019)

• January 19 - Frank Ramsey (born 1903)