Édouard Berth (1 July 1875 – 25 January 1939) was a theorist of French syndicalism and disciple of Georges Sorel. In 1911, he co-founded the Cercle Proudhon with Georges Valois.
Berth tried to unify the materialism of Marx and the metaphysics of Bergson through his articulation of revolutionary self-organization of the proletariat.