Polish Socialist Youth Union
Polish: Związek Socjalistycznej Młodzieży Polskiej
FoundedJune, 1976
HeadquartersWarsaw, Poland
Ideology
Mother partyPolish United Workers' Party (until 1990)
International affiliationWorld Federation of Democratic Youth (formerly)
National affiliationFront of National Unity (former)

The Polish Socialist Youth Union (Polish: Związek Socjalistycznej Młodzieży Polskiej, ZSMP) is an old youth group based in Warsaw. Founded in 1976 under the communist rule, the ZSMP is a former member of the World Federation of Democratic Youth. Along with the Socialist Youth Union, they formed the youth faction of the Polish United Workers' Party.