21 Members (excluding the associate or suspended members but including the countries represented on their behalf) [The rulers are not necessarily the representatives in the organisation. ] :
 |  | ARGENTINE | (Buenos Aires a + Olivos r) |  | President Roberto Marcelo Levingston |  | |
 |  | BOLIVIA | (Sucre cj + La Paz eir) |  | President Juan Jose Torres | | |
 |  | BRAZIL | (Brasilia) |  | President Emilio Garrastazu Medici | | |
 |  | CHILE | (Santiago of Chile a + Valparaiso l + Vina del Mar s) |  | President Salvador Allende | | |
 |  | COLOMBIA | (Bogota) |  | President Misael Pastrana Borrero | | |
 |  | COSTA RICA | (San Jose) |  | President Jose Figueres Ferrer |  | |
 |  | CUBA | (Havana) |  | Supreme Leader Fidel Castro | | |
 |  | DOMINICAN | (Santo Domingo de Guzman) |  | President Joaquin Balaguer | | |
 |  | ECUADOR | (San Francisco of Quito) |  | President Jose Maria Velasco Ibarra | | |
 |  | GUATEMALA | (Guatemala City) |  | President Carlos Manuel Arana Osorio | | |
 |  | HONDURAS | (Tegucigalpa a + Comayaguela c) |  | President Oswaldo Lopez Arellano | | |
 |  | HAITI | (Port Au Prince) |  | Supreme Chief Francois Duvalier Papa Doc | | |
 |  | ITALY | (Rome a) |  | President Giuseppe Saragat |  | |
 |  | MEXICO | (Mexico City) |  | President Luis Echeverria Alvarez | | |
 |  | NICARAGUA | (Managua) |  | President Anastasio Somoza Debayle | | |
 |  | PANAMA | (Panama City) |  | General Omar Torrijos Herrera | | |
 |  | PERU | (Lima) |  | President Juan Velasco Alvarado | | |
 |  | PARAGUAY | (Assumption) |  | President Alfredo Stroessner | | |
 |  | EL SALVADOR | (San Salvador) |  | President Fidel Sanchez Hernandez | | |
 |  | URUGUAY | (Montevideo) |  | President Jorge Pacheco Areco | | |
 |  | VENEZUELA | (Caracas) |  | President Rafael Caldera | | |
