Having studied at the famous Karolos Koun Drama School, he made his stage debut in 1957 and then collaborated with many stage groups. He participated in numerous Greek films.
He stood against the military dictatorship that was imposed in 1967 and was imprisoned in 1973, just a year before the Junta's fall.
A staunch leftist, Kostas Kazakos was among the artists who protested actively against NATO's imperialist war in Yugoslavia in 1999, participating in anti-war demonstrations in Athens.
In the 2007 Greek legislative elections he was elected an MP of the Communist Party of Greece (KKE) and he was re-elected in 2009, holding this position until 2012.
In a statement issued today, the Press Office of the Central Committee of the KKE expresses deep sorrow for the death of Kostas Kazakos, characterizing him a gifted actor, generous personality and valuable comrade.