Proletarian Catalan Party (, 1934–1936) was a political party in Catalonia, Spain. PCP was founded in January 1934. Its main leader was Jaume Compte. PCP had its origins in the Estat Català-Partit Proletari, founded in 1932.
The goal of PCP was the creation of a Catalan Socialist Republic.
The party had a large influence with the trade union Centre Autonomista de Dependents de Comerç i Industria (CADCI).
The party had around 500–800 members at its peak, mainly from Barcelona.