The Native American name controversy is an ongoing discussion about the changing terminology used by the Indigenous peoples of the Americas to describe themselves, as well as how they prefer to be referred to by others. Preferred terms vary primarily by region and age. As Indigenous peoples and communities are diverse, there is no consensus on naming. Historically, until late in the 20th century, most Indigenous people in the Americas were collectively called "Indians". The distinct people in the Arctic were called "Eskimos". Both terms have declined in usage in formal speech.
When discussing broad groups of peoples, naming may be based on shared language, region, or historical relationship, such as "Algonquin-speaking peoples", "Pueblo-dwelling peoples", "Plains Indians", or "LDN peoples" (Lakota, Dakota and Nakota peoples).
Many English exonyms have been used to refer to the Indigenous peoples of the Americas (also known as the New World), who were resident within their own territories when European colonists arrived in the 15th and 16th centuries. Some of these names were based on French, Spanish, or other European language terminology used by earlier explorers and colonists, many of which were derived from the names that tribes called each other; some resulted from the colonists' attempt to translate endonyms from the native language into their own, or to transliterate by sound. In addition, some names or terms were pejorative, arising from prejudice and fear, during periods of conflict (such as the American Indian Wars) between the cultures involved.
In the 20th and 21st centuries, there has been greater awareness among non-Indigenous peoples that Indigenous peoples in the Americas have been active in discussions of how they wish to be known. Indigenous people have pressed for the elimination of terms they consider to be obsolete, inaccurate, or racist. During the latter half of the 20th century and the rise of the Red Power movement, the United States government responded by proposing the use of the term "Native American" to recognize the primacy of Indigenous peoples' tenure in the country.