Workers Party of Socialist Unity (Portuguese: Partido Operário de Unidade Socialista, pronounced [pɐɾˈtiðwɔpɨˈɾaɾju ðɨ uniˈðaðɨ susjɐˈliʃtɐ], POUS) was a small Trotskyist former political party in Portugal, founded by Aires Rodrigues and Carmelinda Pereira in 1979 after a split from the Portuguese Socialist Party.

[1] It is a member of the Fourth International led by Pierre Lambert.

It disbanded itself as a registered political party on November 14, 2020.

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