Socialist Workers Party (Peru)

Socialist Workers Party (in Spanish: Partido Socialista de los Trabajadores, or PST) is a Trotskyist political party in Peru.

In 1980, PST had its candidates on the lists of PRT. On March 7, 1982, the majority wing of the Revolutionary Marxist Workers Party (POMR), led by Senator Ricardo Napurí, merged into PST.

PST is a member of LIT-CI. It publishes Bandera Socialista.

In 1992, PST split, and a group adhering to UIT-CI formed a parallel PST.