Social Democratic Workers' Party in Subcarpathian Rus'

The Social Democratic Workers' Party in Subcarpathian Rus' (Ukrainian: Соціал-демократична робітнича партія на Підкарпатській Русі, Sotsial-demokratichna robitnicha partiya na Pidkarpats'kiy Rusi; Czech: Sociálně demokratická strana dělnická na Podkarpatské Rusi) was a social democratic political party in Carpathian Ruthenia (or Subcarpathian Rus') in Czechoslovakia.

[2] The party obtained the support of the Gregory Žatkovich, the first governor of Subcarpathian Rus, during his tenure 1920–1921.

The party activists came from working and middle-class background, recruiting members from the Rusyn, Hungarian, Jewish and Czech communities.

[2] The party established several cooperatives and trade unions, particularly in the lumber industry.

[3] Leading members of the party included Jacko Ostapčuk, Julian Révaý [cs; uk], Jaromír Nečas, Dmytro Nimčuk, Stephan Kločurak and János Horváth.