1748 in philosophy

• David Hume's An Enquiry Concerning Human Understanding
• Montesquieu's The Spirit of the Laws
• Julien Offray de La Mettrie's Man a Machine

• February 6 - Adam Weishaupt (died 1830)
• February 15 - Jeremy Bentham (died 1832)
• April 3 - Dietrich Tiedemann (died 1803)
• April 27 - Adamantios Korais (died 1833)
• May 7 - Olympe de Gouges (died 1793)

• April 3 - Jean-Jacques Burlamaqui