Yanis Kordatos was a Greek Marxist historian, sociologist and politician. Kordatos wrote over twenty historical works dealing with Ancient, Byzantine, and Modern Greek history. Some of his most notable books include A History of Greek Literature from 1453-1961 (1962), The Last Days of the Byzantine Empire (1975), A History of Ancient Greek Philosophy, The Commune of Thessalonica (Salonika), 1342-1349 (1975), and The Social Meaning of the Greek War of Independence of 1821 (1972). He is considered the father of Greek Marxist historiography.

The Communist Party of Greece is a Marxist–Leninist political party in Greece. It was founded in 1918 as the Socialist Labour Party of Greece and adopted its current name in November 1924. It is the oldest political party in modern Greek politics.