John Maynard Keynes, 1st Baron Keynes, Order of the Bath (5 June 1883–21 April 1946) ek British economist rahaa, jiske ideas ke Keynesian economics bola jaawe hae. Uu bolis rahaa ki sarkar ke ke tax aur banking measures ke kaam me laae ke economic recessions, depressions aur booms ke control kare ke chaahi. Uu modern theoretical of macroeconomics ke guru rahaa.