Partido Comunista de España (VIII y IX Congresos) (Communist Party of Spain (8th and 9th Congresses)), a pro-Soviet splinter group of PCE. PCE (VIII-IX) was one of many groups that broke away from PCE during the period when Santiago Carrillo held the post of PCE general secretary and directed the party towards eurocommunism. A prominent leader of PCE(VIII-IX) was Augustín Gomez. PCE (VIII-IX) was founded in 1971. It published a magazine called Mundo Obrero (same name as the publication of PCE).

In 1980 PCE (VIII-IX) fused with Partido Comunista de los Trabajadores to form Partido Comunista de España Unificado . PCEU was later instrumental in creating Partido Comunista de los Pueblos de España in 1982.