| Polish Socialist Youth Union | |
| Native Name: | Polish: Związek Socjalistycznej Młodzieży Polskiej |
| Founded: | June, 1976 |
| Headquarters: | Warsaw, Poland |
| Mother Party: | Polish United Workers' Party (until 1990) |
| International: | World Federation of Democratic Youth (formerly) |
| National: | Front 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.