Fidel Alejandro Castro Ruz ( born August 13, 1926) is a Cuban political leader and communist revolutionary.

As the primary leader of the Cuban Revolution, Castro served as the Prime Minister of Cuba from February 1959 to December 1976, and then as the President of the Council of State of Cuba and the President of Council of Ministers of Cuba until his resignation from the office in February 2008. He served as First Secretary of the Communist Party of Cuba from the party's foundation in 1961.

His younger brother Ra繳l Castro is currently Second Secretary of the Communist Party and President of the Councils of State and Ministers and previously served under Fidel as Minister of Defence in 1959-2008.