International Socialist League (Latin America)

''This is about the International Socialist League in Latin America. For other organisations of the same name, see International Socialist League (disambiguation)''

The International Socialist League is a group of Trotskyist parties organised around the ideas of Nahuel Moreno. It was founded in 2005 by those members of the International Centre of Orthodox Trotskyism who chose not to rejoin the International Workers League (Fourth International).

The members of the league are:


 * Workers Party of Honduras (Partido de los Trabajadores de Honduras, PT (H))
 * Revolutionary Workers Party of Nicaragua (Partido Revolucionario de los Trabajadores de Nicaragua, PRT (N))
 * Socialist Workers Party of Costa Rica (Partido Socialista de los Trabajadores de Costa Rica, PST (CR))
 * Internationalist Workers League of Brazil (Liga Operaria Internacionalista de Brasil LOI (B))
 * Revolutionary Socialist Party - Workers Cause of Argentina (Partido de la Revolución Socialista - La Causa Obrera de Argentina PRS-LCO)