Western Cordilleras can refer to The North American Cordillera, along the western side of North America Mountain ranges in the Andes of South America: Cordillera Occidental (Central Andes), in Bolivia and Chile Cordillera Occidental (Colombia) Cordillera Occidental (Ecuador) Cordillera Occidental (Peru) Part of the Cordillera Central (Luzon) in the Philippines A mountain range in Borneo