1820 in philosophy
Publications
- Thomas Brown - Lectures on the Philosophy of the Human Mind
- Georg Wilhelm Friedrich Hegel - ''Grundlinien der Philosophie des Rechts''
Births
- 22 January - James Hutchison Stirling, English philosopher
- 27 April – Herbert Spencer, English philosopher and sociologist
- 23 June –, German author and philosopher
- 28 November – Friedrich Engels, German revolutionary, political economist, philosopher, industrialist, and military historian
Deaths
- 24 March – Jean-Baptiste-René Robinet, French philosopher
- 2 April – Thomas Brown, Scottish philosopher and doctor
- 20 July –, Swedish philosopher