Philosophy: Biographies
- Friedrich Heinrich Jacobi
- Friedrich Wilhelm Joseph von Schelling
- Friedrich Wilhelm Nietzsche
- Gabriel Marcel
- Gaston Bachelard
- Georg Wilhelm Friedrich Hegel
- George Berkeley
- George Edward Moore
- George Herbert Mead
- George Santayana
- Gerard of Cremona
- Gilbert Ryle
- Giordano Bruno
- Giovanni Battista Vico
- Giovanni Gentile
- Giovanni Pico della Mirandola
- Gorgias
- Gottfried Wilhelm Baron von Leibniz
- Gottlob Frege
- Handsome Lake