The Revolutionary Socialist Workers' Party (, DSðP) is a Trotskyist party in Turkey. It was founded by à Âevket DoÃÂan Tarkan and his friends from Trotskyist journal Socialist Worker in 1997. The group had links to far-left Kurtuluà  Hareketi (Liberation Movement) before the 1980 Turkish coup d'état.
An opposition grouping within DSðP named Antikapitalist was formed following a split in DSðP. The group had no relation with DSðP after that split.
The party did not participate in elections in Turkey but supported left-wing electoral alliances. At the 2007 elections, they declared support for the independent candidates of Democratic Society Party. The party voted "yes" in the 2010 Turkish constitutional referendum as part of the Yetmez Ama Evet ("Not Enough but Yes") campaign.
The DSðP is the Turkish section of the International Socialist Tendency. The DSðP supports the political magazine Altüst.
The party is one of the participants in the Peoples' Democratic Congress, a political initiative instrumental in founding the Peoples' Democratic Party in 2012.
Lawyer Mücteba Kñlñç, a member of the DSðP who was once on the agenda with the Young Civilians Initiative, was detained within the scope of the 'FETÃÂ' operation in 2016.