The Socialist Workers Party of Romania (Romanian: Partidul Socialist al Muncitorilor din România, PSMR), later renamed the Independent Socialist Party of Romania (Partidul Socialist Independent din România, PSIR), was a political party in Romania. The party was founded in Bucharest on 15 July 1928, as a leftist splinter group of the Social Democratic Party, formed by a minority that opposed the cooperation with the National Peasants' Party.