Indonesia, officially the Republic of Indonesia, is a transcontinental country in Southeast Asia and Oceania, between the Indian and Pacific oceans. It is the world's largest island country, with more than seventeen thousand islands, and at 1,904,569 square kilometres, the 14th largest by land area and 7th in the combined sea and land area. With over 267 million people, it is the world's 4th most populous country as well as the most populous Muslim-majority country. Java, the world's most populous island, is home to more than half of the country's population. The country's capital, Jakarta, is the second-most populous urban area in the world.
The sovereign state is a presidential, constitutional republic with an elected legislature. It has 34 provinces, of which five have special status. The country shares land borders with Papua New Guinea, East Timor, and the eastern part of Malaysia. Other neighbouring countries include Singapore, Vietnam, the Philippines, Australia, Palau, and India's Andaman and Nicobar Islands. Despite its large population and densely populated regions, Indonesia has vast areas of wilderness that support a high level of biodiversity.