Affiliated Parties Revolutionary Workers' Party - Posadist (Partido Obrero Revolucionario - Posadista), Argentina Revolutionary Worker's Party - Trotskyist (Parti Ouvrier Révolutionnaire - Trotskiste), Belgium Revolutionary Workers' Party (Trotskyist Posadist) (Partido Obrero Revolucionario (Trotskista Posadista)), Bolivia Brazilian Section of the Trotskyist-Posadist IVth International (Seção Brasileira da IV Internacional Trotskista-Posadista) Revolutionary Workers' Party (Trotskyist), Britain Revolutionary Workers' Party (Posadist) (Partido Obrero Revolucionario (Posadista)), Chile Posadist Trotskist Workers Party (Partido Obrero Trotskista Posadista), Colombia Revolutionary Communist Party (Trotskyist) (Parti Communiste Révolutionnaire (Trotskyiste)), France Revolutionary Communist Party-Posadists (Epanastatiko Kommounistiko Komma-Posadistes), Greece Revolutionary Communist Party (Trotskyist-Posadist) (Partito Comunista Rivoluzionario (Trotzkista-Posadista)), Italy Revolutionary Worker's Party - Trotskyist (Partido Obrero Revolucionario (Trotskista)), Spain Revolutionary Workers' Party (Trotskyist-Posadist) (Partido Obrero Revolucionario (Trotskista-Posadista)), Uruguay
