The Unified Communist Party of Spain ( es, Partido Communista Unificado de España, abbreviated PCEUMartínez de Sousa, José.
Manual de estilo de la lengua española
'. Gijón: Trea, 2001. p. 515) was a

political party A political party is an organization that coordinates candidates to compete in a particular country's elections. It is common for the members of a party to hold similar ideas about politics, and parties may promote specific political ideology ...

Spain , image_flag = Bandera de España.svg , image_coat = Escudo de España (mazonado).svg , national_motto = ''Plus ultra'' (Latin)(English: "Further Beyond") , national_anthem = (English: "Royal March") , i ...

. PCEU was a pro-Soviet rival to the

Eurocommunist Eurocommunism, also referred to as democratic communism or neocommunism, was a trend in the 1970s and 1980s within various Western European communist parties which said they had developed a theory and practice of social transformation more rele ...

Communist Party of Spain The Communist Party of Spain ( es, Partido Comunista de España; PCE) is a Marxist-Leninist party that, since 1986, has been part of the United Left coalition, which is part of Unidas Podemos. It currently has two of its politicians serving as ...

(PCE).
Radio Free Europe research
', Vol. 5, Edition 21–31. 1980. p. 92 PCEU was founded at an 'extraordinary congress of unification' in Madrid in May 1980, merging the

Communist Party of Spain (8th and 9th Congresses) The Communist Party of Spain (8th and 9th Congresses) (in Spanish: ''Partido Comunista de España (VIII y IX Congresos)'') was a pro-Soviet splinter group of Communist Party of Spain (PCE). PCE (VIII-IX) was one of many groups that broke away fr ...

(PCE (VIII-IX)) and the Workers' Communist Party (PCT).Molas, Isidre, and Joan B. Culla i Clarà.
Diccionari del partits polítics de Catalunya: segle XX
'. Barcelona: Enciclopèdia Catalana, 2000. p. 225 News of the merger were carried by Czechoslovak and East German press. In June 1980 an extraordinary party conference was held in

Alicante Alicante ( ca-valencia, Alacant) is a city and municipality in the Valencian Community, Spain. It is the capital of the province of Alicante and a historic Mediterranean port. The population of the city was 337,482 , the second-largest in t ...

to ratify the merger. In the trade union movement PCEU supported ''

Comisiones Obreras The Workers' Commissions ( es, Comisiones Obreras, CCOO) since the 1970s has become the largest trade union in Spain. It has more than one million members, and is the most successful union in labor elections, competing with the Unión General de ...

''. The youth wing of PCEU was called Unified Communist Youth of Spain (''Juventud Comunista de España Unificada'', JCEU).Moreno Sáez, Francisco.
PARTIDOS, SINDICATOS Y ORGANIZACIONES CIUDADANAS EN LA PROVINCIA DE ALICANTE DURANTE LA TRANSICIÓN (1974-1982)
' The PCEU congress held in

Bilbao ) , motto = , image_map = , mapsize = 275 px , map_caption = Interactive map outlining Bilbao , pushpin_map = Spain Basque Country#Spain#Europe , pushpin_map_caption ...

in March 1981 was considered illegitimate by one sector of the party, leading to a split of the party into two. One group was led by Carlos Delgado. The other group was led by Fèlix Valero and Carlos Tuya. Both groups published identically named organs titled ''Mundo Obrero y Comunista'' and ''La Voz Comunista''. Both factions had youth wings named JCEU. The Delgado group took part in the 1984 Unity Coordination of Communists, that included the Movement to Recover the Communist Party of Spain (MRPCE), the Communist Collectives and the

Party of Communists of Catalonia Party of the Communists of Catalonia ( ca, Partit dels i les Comunistes de Catalunya) was a communist party in Catalonia that existed from 1982 to 2014. The main organ of PCC was ''Avant'' and the theoretical organ was ''Realitat''. Every year the ...

. The Valero/Tuya group continued to exist until 1984. Tuya served as party president.
El País, anuario ...
'. 1985. p. 98

References

1980 establishments in Spain 1984 disestablishments in Spain Defunct communist parties in Spain Political parties disestablished in 1984 Political parties established in 1980 {{Spain-party-stub