György Lukács was a Hungarian Marxist philosopher, literary historian, literary critic, and aesthetician. He was one of the founders of Western Marxism, an interpretive tradition that departed from the Soviet Marxist ideological orthodoxy. He developed the theory of reification, and contributed to Marxist theory with developments of Karl Marx's theory of class consciousness. He was also a philosopher of Leninism. He ideologically developed and organised Lenin's pragmatic revolutionary practices into the formal philosophy of vanguard-party revolution.

Marxist philosophy or Marxist theory are works in philosophy that are strongly influenced by Karl Marx's materialist approach to theory, or works written by Marxists. Marxist philosophy may be broadly divided into Western Marxism, which drew from various sources, and the official philosophy in the Soviet Union, which enforced a rigid reading of what Marx called dialectical materialism, in particular during the 1930s. Marxist philosophy is not a strictly defined sub-field of philosophy, because the diverse influence of Marxist theory has extended into fields as varied as aesthetics, ethics, ontology, epistemology, social philosophy, political philosophy, the philosophy of science, and the philosophy of history. The key characteristics of Marxism in philosophy are its materialism and its commitment to political practice as the end goal of all thought. The theory is also about the struggles of the proletariat and their reprimand of the bourgeoisie.