Cayuga is one of the languages of the Haudenosaunee (Iroquois Confederacy). Only about 350 people still speak Cayuga, most in Ontario (though there are still a few Cayuga-speaking elders in New York State.)

Mingo is a dialect of Seneca spoken by a tribe of Seneca who left the Haudenosaunee (Iroquois confederacy) and settled in the West Virginia area. Mingo is nearly extinct now, though some in the community are trying to revive it. Though Mingo and Seneca are mutually comprehensible, political distinctions have caused many to view them as separate languages rather than merely dialects. The Mingo call their own language Ökwe'öwé, Unötawa'ká', or Unyääsháôt.

Mohawk, called Kanien'kehaka by its own speakers, is the most-spoken languageof the Haudenosaunee (Iroquois Confederacy). It is spoken by about 3000 people, half in Canada and half in New York state.

Oneida is one of the languages of the Haudenosaunee (Iroquois Confederacy). There are around 250 speakers of Oneida in Canada and New York State.

Onondaga is one of the languages of the Haudenosaunee (Iroquois Confederacy). Only around 100 speakers of Onondaga remain, most in Canada.

Seneca is one of the languages of the Haudenosaunee (Iroquois Confederacy). Around 200 speakers of Seneca remain, most in New York state. Mingo, a dialect of Seneca, is spoken in the West Virginia region by a group of Seneca who left the Haudenosaunee. Though Mingo and standard Seneca are mutually comprehensible, political distinctions have led many to treat it as a separate language.

Cherokee--more properly spelled Tsalagi--is an Iroquoian language with an innovative written syllabary invented by the Cherokee scholar Sequoyah. It is spoken by about 22,000 people primarily in Oklahoma and North Carolina. Though Cherokee is one of the healthier Indian languages of North America and the one in which the most literature being published, it is still in imperilled condition because of government policies as late as the fifties which enforced the removal of Cherokee children from Tsalagi-speaking homes, reducing the number of young Cherokees being raised bilingually from 75% to less than 5% today.

Tuscarora is one of the languages of the Haudenosaunee (Iroquois Confederacy). It is spoken by no more than two dozen elders now, most in New York State.

Huron (Wendat) and Wyandot are dialects of the same, unfortunately extinct language. It was last spoken by the Huron people in Quebec in the 1910's and by the Wyandot in Oklahoma in the 1960's.