The Communist Manifesto, originally the Manifesto of the Communist Party, is a political pamphlet written by Karl Marx and Friedrich Engels, commissioned by the Communist League and originally published in London in 1848. The text is the first and most systematic attempt by Marx and Engels to codify for wide consumption the historical materialist idea that "the history of all hitherto existing society is the history of class struggles", in which social classes are defined by the relationship of people to the means of production. Published amid the Revolutions of 1848 in Europe, the Manifesto remains one of the world's most influential political documents.

Karl Marx was a German-born philosopher, economist, political theorist, historian, sociologist, journalist, and revolutionary socialist. His best-known works are the 1848 pamphlet The Communist Manifesto and the three-volume Das Kapital (1867–1894); the latter employs his critical approach of historical materialism in an analysis of capitalism and is the culmination of his intellectual efforts. Marx's ideas and theories and their subsequent development, collectively known as Marxism, have exerted enormous influence on modern intellectual, economic and political history.