What is close to Indonesia? Indonesia is located on the island of Sumatra in western Indonesia and is flanked by the Andaman Sea and the Indian Ocean. The country is located on the so-called “Ring of Fire” and is therefore prone to earthquakes and volcanic eruptions. The closest countries to Indonesia are Malaysia and Singapore, located just to the north of Sumatra. The Philippines lie to the east of Sumatra and are separated from Indonesia by the Celebes Sea.…