The Horn Scientific Expedition was the first primarily scientific expedition to study the natural history of Central Australia, sponsored by three Australian universities (University of Sydney, University of Adelaide and University of Melbourne). It took place from May to August 1894, with expedition members first traveling by train from Adelaide to the railhead at Oodnadatta in South Australia, then using camels for transport to traverse over 3000 km of largely uncharted country from Oodnadatta through the Finke River basin to Alice Springs and the Macdonnell Ranges in what is now the Northern Territory.
The expedition was equipped and sponsored by William Austin Horn, a wealthy pastoralist and mining magnate, who accompanied the expedition in its early stages. The area studied included the country of the Arrernte and Luritja people, whose assistance and goodwill was crucial to the success of the expedition through the provision of natural history specimens, artefacts and information.
Members of the expedition, with their responsibilities, included:
Other personnel were two collectors, one of whom was ornithologist George Keartland, a cook and four cameleers. Local Aboriginal guides were also used for parts of the expedition.
Among the achievements of the expedition was the collection and description of new mammal species, some of which are now locally extinct or threatened, including the: