Indonesia (Indonesia: Indonesia) or official name is Republik Indonesia. Indonesia is the largest archipelago in the world. Located between the Indochina Peninsula and Australia. And between the Indian Ocean and the Pacific Ocean It borders with Malaysia on the island of Borneo or Kalimantan. (Kalimantan), Papua New Guinea on the island of New Guinea or Irian, and Timor-Leste on the island of Timor.