The Northern Territory (abbreviated as NT) is a federal Australian territory in the centre and central northern regions. It shares borders with Western Australia to the west (129th meridian east), South Australia to the south (26th parallel south), and Queensland to the east (138th meridian east). To the north, the territory is bordered by the Timor Sea, the Arafura Sea and the Gulf of Carpentaria. Despite its large area—over 1,349,129 square kilometres (520,902 sq mi), making it the third largest Australian federal division—it is sparsely populated. The Northern Territory's population of 243,700 (2014) makes it is the least populous of Australia's eight major states and territories, having fewer than half as many people as Tasmania.

The archaeological history of the Northern Territory begins over 40,000 years ago when Indigenous Australians settled the region. Makassan traders began trading with the indigenous people of the Northern Territory for trepang from at least the 18th century onwards, and very likely for 300 years prior to that. The coast of the territory was first seen by Europeans in the 17th century. The British were the first Europeans to attempt to settle the coastal regions. After three failed attempts to establish a settlement (1824–1828, 1838–1849, and 1864–66), success was achieved in 1869 with the establishment of a settlement at Port Darwin. Today the economy is based on tourism, especially Kakadu National Park in the Top End and the Uluru-Kata Tjuta National Park (Ayers Rock) in central Australia, and mining.

The history of the Northern Territory began over 60,000 years ago when Indigenous Australians settled the region. Makassan traders began trading with the indigenous people of the Northern Territory for trepang from at least the 18th century onwards , and possibly for 300 years prior to that.

The coast of the Territory was first seen by Europeans in the 17th century. The British were the first to attempt to settle the coastal regions of the Territory in the 19th century; however no attempt was successful until the establishment of a settlement at Port Darwin in 1869.

Prehistory

Although sparse, the archeological record of the Northern Territory provides evidence of settlement around 60,000 years ago at Malakunanja and Nauwalabila, although there is controversy surrounding the thermoluminescent dating of these sites. During this period, sea levels were 100 - 150m lower than at present, and Australia and New Guinea along with large tracts of what is now the Timor Sea formed one single landmass.