Communist Action (Spanish: Acción Comunista, Catalan: Acció Comunista) was a Marxist organisation in Spain founded in exile in 1964, during the Francoist State. The organisation produced a newspaper entitled Acción Comunista. Among its members were Carlos Semprún and José Antonio Ubierna. In 1970 AC came in contact with workerist organizations like UHP and CRAS (Comunas Revolucionarias de Acción Socialista). In 1976 some of its members, especially in Catalonia, joined the POUM.