Taiwanese aborigines (Chinese: 原住民; pinyin: yuánzhùmín; Wade–Giles: yüan2-chu4-min2; Pe̍h-ōe-jī: gôan-chū-bîn; literally "original inhabitants") is the term commonly applied in reference to the indigenous peoples of Taiwan. Although Taiwanese indigenous groups hold a variety of creation myths, recent research suggests their ancestors may have been living on the islands for approximately 8,000 years before major Han Chinese immigration began in the 17th century (Blust 1999). Taiwanese aborigines are Austronesian peoples, with linguistic and genetic ties to other Austronesian ethnic groups, such as peoples of the Philippines, Malaysia, Indonesia, Madagascar, Polynesia, and Oceania (Hill et al. 2007; Bird, Hope & Taylor 2004). The issue of an ethnic identity unconnected to the Asian mainland has become one thread in the discourse regarding the political status of Taiwan.

For centuries, Taiwan's aboriginal peoples experienced economic competition and military conflict with a series of colonizing peoples. Centralized government policies designed to foster language shift and cultural assimilation, as well as continued contact with the colonizers through trade, intermarriage and other dispassionate intercultural processes, have resulted in varying degrees of language death and loss of original cultural identity. For example, of the approximately 26 known languages of the Taiwanese aborigines (collectively referred to as the Formosan languages), at least ten are extinct, five are moribund (Zeitoun & Yu 2005:167) and several are to some degree endangered. These languages are of unique historical significance, since most historical linguists consider Taiwan to be the original homeland of the Austronesian language family (Blust 1999).

Indigenous peoples are ethnic groups that are defined as "indigenous" according to one of the various definitions of the term, though there is no universally accepted definition.

In the late twentieth century, the term began to be used primarily to refer to ethnic groups that have historical ties to groups that existed in a territory prior to colonization or formation of a nation state, and which normally preserve a degree of cultural and political separation from the mainstream culture and political system of the nation state within the border of which the indigenous group is located. The political sense of the term defines these groups as particularly vulnerable to exploitation and oppression by nation states. As a result, a special set of political rights in accordance with international law have been set forth by international organizations such as the United Nations, the International Labour Organization and the World Bank. The United Nations have issued a Declaration on the Rights of Indigenous Peoples to protect the collective rights of indigenous peoples to their culture, identity, language, employment, health, education and natural resources. Depending on which precise definition of "indigenous people" used, and on the census, estimates of a world total population of Indigenous people range from 220 million Indigenous peoples in 1997 to 350 million in 2004.