Australo-Melanesians (also known as Australasians or the Australomelanesoid, Australoid or Australioid race) is an outdated historical grouping of various people indigenous to Melanesia and Australia. Controversially, groups from Southeast Asia and South Asia were also sometimes included.
While most authors included Papuans, Aboriginal Australians and Melanesians (mainly from Fiji, New Caledonia, Solomon Islands and Vanuatu), there was controversy about the inclusion of the various Southeast Asian populations grouped as "Negrito", or a number of dark-skinned tribal populations of the Indian subcontinent.
The concept of dividing humankind into three, four or five races (often called Caucasoid, Mongoloid, Negroid, and Australoid) was introduced in the 18th century and further developed by Western scholars in the context of "racist ideologies" during the age of colonialism. With the rise of modern genetics, the concept of distinct human races in a biological sense has become obsolete. In 2019, the American Association of Biological Anthropologists stated: "The belief in “races” as natural aspects of human biology, and the structures of inequality (racism) that emerge from such beliefs, are among the most damaging elements in the human experience both today and in the past."
The term "Australoid" was coined in ethnology in the mid 19th century, describing tribes or populations "of the type of native Australians". The term "Australioid race" was introduced by Thomas Huxley in 1870 to refer to certain peoples indigenous to South and Southeast Asia and Oceania. In physical anthropology, Australoid is used for morphological features characteristic of Aboriginal Australians by Daniel John Cunningham in his Text-book of Anatomy (1902). An Australioid (sic, with an additional -i-) racial group was first proposed by Thomas Huxley in an essay On the Geographical Distribution of the Chief Modifications of Mankind (1870), in which he divided humanity into four principal groups (Xanthochroic, Mongoloid, Negroid, and Australioid).