12 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 Jorge Rafael Videla |  | |
 |  | BOLIVIA | (Sucre cj + La Paz eir) |  | President Luis Garcia Meza Tejada | | |
 |  | BRAZIL | (Brasilia) |  | President Joao Figueiredo | | |
 |  | CHILE | (Santiago of Chile a + Vina del Mar s) |  | General Augusto Pinochet | | |
 |  | COLOMBIA | (Bogota) |  | President Julio Cesar Turbay Ayala | | |
 |  | CUBA | (Havana) |  | Supreme Leader Fidel Castro |  | |
 |  | ECUADOR | (San Francisco of Quito) |  | President Jaime Roldos Aguilera | | |
 |  | MEXICO | (Mexico City) |  | President Jose Lopez Portillo | | |
 |  | PERU | (Lima a + Arequipa d) |  | President Fernando Belaunde Terry | | |
 |  | PARAGUAY | (Assumption) |  | President Alfredo Stroessner | | |
 |  | URUGUAY | (Montevideo) |  | President Aparicio Mendez | | |
 |  | VENEZUELA | (Caracas) |  | President Luis Herrera Campins | | |
