Damon Mcknight
Australia is surrounded by several fascinating countries, each offering a unique experience for tourists. But which country is the closest to Australia? Papua New Guinea and Indonesia, which share coastlines to the north and east, are the closest countries to Australia. At its closest point, Indonesia is approximately 570 kilometers (354 miles) from mainland Australia. Papua New Guinea is even closer, with the closest distance between the two countries being 2,369 kilometers, and only 4 kilometers between their closest points.
| Characteristics | Values |
|---|---|
| Closest country to Australia | Papua New Guinea, Indonesia |
| Distance from Papua New Guinea | 2,369 kilometers |
| Distance from Indonesia | 570 kilometers |
| Distance from New Zealand | 4,155 kilometers |
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What You'll Learn
Papua New Guinea: 2,369km away from Australia
Papua New Guinea is the closest country to Australia. The closest distance between the two countries is 2,369 kilometres. At its closest point, the two countries are only 4 kilometres apart. Papua New Guinea shares a coastline with Australia to the north.
Papua New Guinea was once under Australian administration, gaining its independence in 1975. In 1978, the two countries established their maritime border, which now includes several Australian islands within Papua New Guinea's maritime boundaries.
Papua New Guinea is known for its rich biodiversity and traditional cultures. It is an attractive destination for adventurous and culture-loving tourists. The country also boasts stunning natural scenery, with pristine beaches and turquoise waters.
Indonesia is also recognised as one of Australia's closest neighbours, with a shared maritime border. At its closest point, Indonesia is approximately 570 kilometres from mainland Australia.
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Indonesia: a shared maritime border with Australia
Australia's closest neighbour is Papua New Guinea, with the two countries separated by just 4km at their closest point. However, Indonesia shares a maritime border with Australia.
The maritime border between Australia and Indonesia is divided into three segments. The first two are broken by the Timor Gap, where Australian and East Timorese territorial waters meet. The first segment runs from the Australia-Indonesia-Papua New Guinea tripoint in the western entrance to the Torres Straits, through the Arafura Sea and Timor Sea, to the point where the territorial waters of the two countries touch the eastern limits of Timor-Leste's territorial waters claim. The second segment runs westward from this point, to the Indian Ocean. The third segment is in the Indian Ocean, between Australia's external territory of Christmas Island and the Indonesian island of Java.
The border between the two countries has been established through four treaties. The first, signed in 1971, established part of the eastern segment of the seabed boundary. A second treaty, signed in 1972, demarcated the rest of the eastern segment and a portion of the western segment of the seabed boundary. A third treaty, signed in 1997, extended the boundary further west, terminating in the Indian Ocean where the two countries' exclusive economic zone limits diverge. This treaty also established the boundary between Christmas Island and Java. The fourth treaty has been signed but not yet ratified.
The 1997 treaty also separated the sovereignty of the seabed and water column in the area, with Australia having sovereignty over the seabed and its resources, and Indonesia having sovereignty over the water column and the resources within it. This treaty settled most grey areas between the two countries, whose relations have ranged from cordial to hostile, concerning their common maritime boundary.
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New Zealand: 4,155km away from Australia
New Zealand is 4,155km away from Australia, but it is not the closest country to the island nation. In 2004, Australia and New Zealand signed an agreement in Adelaide that defined their maritime boundaries. This agreement came into effect in 2006 and reaffirmed a treaty signed between the two countries in the 1980s.
New Zealand is a popular tourist destination for Australians, known for its glaciers, mountains, and adventure activities such as bungee jumping. The two countries share close cultural and economic ties, with many New Zealanders travelling to Australia for work or leisure and vice versa. New Zealand is also home to a significant Australian expatriate community.
Despite the close relationship between the two countries, the distance between them is considerable. At over four thousand kilometres, it is a long journey by plane or boat, and the two nations are separated by the vast expanse of the Tasman Sea.
The closest country to Australia is Papua New Guinea, with the closest distance between the two nations being 2,369 kilometres. Indonesia is also a close neighbour, with a distance of approximately 570 kilometres from mainland Australia. These countries offer rich biodiversity, traditional cultures, and welcoming people, making them attractive destinations for adventurous and culturally inclined tourists.
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East Timor (Timor-Leste): shares a border with Indonesia
Australia is a country surrounded by several fascinating nations, each offering unique experiences to tourists. One of Australia's closest neighbours is East Timor (Timor-Leste). Located in the eastern part of Timor Island, East Timor shares a border with Indonesia to its west and is situated south of Darwin. This proximity to Australia makes it easily accessible for adventurous travellers seeking to explore new destinations.
East Timor's position as one of Australia's nearest neighbours is significant, given its geographical proximity and accessibility. Its location in the eastern part of Timor Island places it in close proximity to the northern coast of Australia. This closeness opens up opportunities for travellers wishing to explore the region. With its strategic position, East Timor serves as a convenient gateway to the diverse landscapes and vibrant cultures that Australia and the surrounding areas have to offer.
The accessibility of East Timor as a travel destination is further enhanced by its shared border with Indonesia. This shared border highlights the interconnectedness of the region and presents opportunities for travellers to explore multiple countries in a single trip. Indonesia itself is an attractive tourist destination, renowned for its rich culture, history, and ancient attractions. Visitors can explore magnificent Buddhist and Hindu temples, wander through traditional markets, and indulge in delicious local cuisine.
The close distance between East Timor and Australia, as well as its connection to Indonesia, creates a unique travel corridor. Travellers can easily move between these countries, immersing themselves in a variety of cultural and natural experiences. Australia, with its diverse landscapes and vibrant culture, provides a stark contrast to the ancient attractions and traditional markets of Indonesia. East Timor, as a neighbouring country, offers its own distinct attractions and cultural experiences, contributing to a well-rounded travel itinerary.
In conclusion, East Timor (Timor-Leste): shares a border with Indonesia and is one of Australia's closest neighbours. Its geographical proximity, accessibility, and cultural offerings make it an attractive destination for adventurous travellers seeking to explore Australia and the surrounding regions. With its interconnectedness to Indonesia and proximity to Australia, East Timor serves as a strategic gateway, providing diverse travel experiences and cultural insights to those eager to discover new horizons.
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New Caledonia: a French territory
New Caledonia is an archipelago in the southwestern Pacific Ocean, about 900 miles (1,500 km) east of Australia. It is a French territory, although it has a level of autonomy. The islands were settled by Melanesians around 3000 BCE and were probably cut off from outside contact until the late 18th century. The British explorer James Cook landed on the islands in 1774, naming the main island New Caledonia for his father's native Scotland. Regular European contact began in 1841 with the arrival of sandalwood traders from Australia.
In 1853, New Caledonia became a French colony. The French used the islands as a penal colony, sending around 22,000 convicts there between 1864 and 1897. They also imported indentured labourers from various countries to work on public works and in other industries. In 1946, New Caledonia became an overseas territory.
During the late 1940s and early 1950s, New Caledonia strengthened its economic ties with Australia, supplying nickel in exchange for coal. In 1953, all New Caledonians were granted French citizenship, regardless of ethnic origin. In 1988, the French government negotiated the Matignon Accords, which granted New Caledonia wide-reaching autonomy and changed its status from an overseas territory to an overseas country.
The Nouméa Accord, signed in 1998, provided for up to three referendums on independence, to be held between 15 and 20 years after the signing of the agreement. The first two referendums, held in 2018 and 2020, resulted in voters rejecting independence by narrow margins. The third referendum, held in 2021, saw over 95% of voters reject independence, but the poll was boycotted by the pro-independence movement and turnout was low.
In 2024, riots broke out in New Caledonia over a proposed electoral reform. In response, the French government scrapped the bill and imposed a curfew, which was lifted in December of that year. In July 2025, a deal was struck between the French government and New Caledonia to establish a new "État de Nouvelle-Calédonie" or "State of New Caledonia", with the status to be enshrined in the French Constitution. This deal is yet to be confirmed by the French Parliament and put to a referendum in New Caledonia.
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Frequently asked questions
Papua New Guinea is the closest country to Australia. At their closest points, the two countries are only 4km apart.
At their furthest points, Papua New Guinea and Australia are 2,369km apart.
Yes, Indonesia, East Timor (Timor-Leste), and New Zealand are also close to Australia.
The distance between New Zealand and Australia is 4,155km.
