Santiago José Carrillo Solares (18 January 1915 – 18 September 2012) was a Spanish politician who served as General Secretary of the Communist Party of Spain (PCE) from 1960 to 1982. Born in Gijón, Asturias province, Carrillo was the son of the prominent Socialist leader Wenceslao Carrillo and wife María Rosalía Solares Martínez. When he was six years old, his family moved to Madrid. After attending school, he began to work in El Socialista, the Spanish Socialist Workers' Party (PSOE) newspaper at the age of 13. At the same time, he joined the Socialist Union, the Workers' General Union and the Socialist Youth.
In 1932, he joined the Executive Commission of the Socialist Youth and became editor of its newspaper, Renovación. Carrillo was on the left wing of the organisation. In 1933, as the Socialist Youth was becoming more radical, Carrillo was elected as General Secretary. From October 1934 to February 1936 he was jailed, due to his participation in the failed 1934 leftist coup (Carrillo was a member of the National Revolutionary Committee).