Partido Comunista Obrero Español (PCOE, Spanish Communist Workers' Party) is a minor communist political party in Spain. It was founded in 1973, when Enrique Líster (a Republican general in the Spanish Civil War) revolted against the Eurocommunist line of Communist Party of Spain (PCE) general secretary Santiago Carrillo. The party published Unidad y Lucha.
A catalyst for the split was the condemnation by the PCE of the Soviet intervention in Czechoslovakia in 1968. PCOE was legalized in 1977, during the Spanish transition to democracy. Its sister organisation in Catalonia was the Partit Comunista Obrer de Catalunya. PCOE had a youth organization called the Communist Youth Federation of Spain (Federación de Jóvenes Comunistas de España).
In the 1983 regional elections in the Valencian Community PCOE obtained 6,416 votes (0.,34%). It had an electoral pact with Partido Comunista de España Unificado ahead of the regional elections in Madrid of the same year. When PCEU and other groups unified themselves as the Communist Party of the Peoples of Spain, PCOE chose to remain on the outside. Today the party publishes Teoría Socialista and Análisis.