Syndicalist Party (Spanish: Partido Sindicalista; Catalan: Partit Sindicalista) was a left-wing political party in Spain, formed by Ángel Pestaña in 1932. Pestaña, a leading member of the Confederación Nacional del Trabajo (CNT) trade union, formed the party in response to the growing influence of the Iberian Anarchist Federation over the CNT. He and other notable members of the CNT had previously signed a Manifest dels Trenta ("Manifesto of the Thirty"), which had got them expelled.
The Syndicalist Party published a daily newspaper, El Pueblo. In Barcelona the Catalan Federation of the party published Hora Sindicalista (1936-1937) and then Mañana until January 1939. The youth wing of the party was the Syndicalist Youth (Juventud Sindicalista). In 1936 two party members, Pestaña and Benito Pabón, were elected to the parliament as affiliates of the Popular Front.
The group backed the Republic during the Spanish Civil War. Affected by Pestaña's death in December 1937, it still numbered around 30,000 members. In 1974 a group of people coming from anarcho-syndicalist and left-falangist traditions launched a party with the same name.