
The Iowa or Ioway, known as the Bah-Kho-Je or Báxoje in their language, Chiwere, are a Native American Siouan people. Today, they are enrolled in either of two federally recognized tribes, the Iowa Tribe of Oklahoma and the Iowa Tribe of Kansas and Nebraska.

The Kaw Nation are a federally recognized Native American tribe in Oklahoma and parts of Kansas. They come from the central Midwestern United States. The tribe known as Kaw have also been known as the "People of the South wind", "People of water", Kansa, Kaza, Konza, Conza, Quans, Kosa, and Kasa. Their tribal language is Kansa, classified as a Siouan language.

The Meskwaki are a Native American people often known by Western society as the Fox tribe. They have been closely linked to the Sauk people of the same language family. In the Meskwaki language, the Meskwaki call themselves Meshkwahkihaki, which means "the Red-Earths", related to their creation story. Historically their homelands were in the Great Lakes region. The tribe coalesced in the St. Lawrence River Valley in present-day Ontario, Canada. Under French colonial pressures, it migrated to the southern side of the Great Lakes to territory that much later was organized by European Americans as the states of Michigan, Wisconsin, Illinois, and Iowa.

The Osage Nation is a Midwestern Native American tribe of the Great Plains. The tribe developed in the Ohio and Mississippi river valleys around 700 BC along with other groups of its language family. They migrated west of the Mississippi after the 17th century due to wars with Iroquois invading the Ohio Valley from New York and Pennsylvania in a search for new hunting grounds. The nations separated at that time, and the Osage settled near the confluence of the Missouri and Mississippi rivers.

The Otoe are a Native American people of the Midwestern United States. The Otoe language, Chiwere, is part of the Siouan family and closely related to that of the related Iowa and Missouri tribes.

The Peoria are a Native American people. Today they are enrolled in the federally recognized Peoria Tribe of Indians of Oklahoma. Historically, they were part of the Illinois Confederation.

The Piankeshaw, Piankashaw or Pianguichia Indigenous Peoples are Native Americans and members of the Miami Indians who lived apart from the rest of the Miami nation, therefore they were known as Peeyankihšiaki. They live in an area that now includes western Indiana and Ohio, and are closely allied with the Wea Indians. Piankeshaw villages have been reported along the White River in central Indiana, and along the Vermilion River in Illinois, near Ouiatenon. The Piankashaw were living along the Vermilion river in 1743.

The Sac or Sauk are a group of Native Americans of the Eastern Woodlands culture group, who lived primarily in the region of what is now Green Bay, Wisconsin, when first encountered by the French in 1667. Their autonym is oθaakiiwaki, and their exonym is Ozaagii(-wag) in Ojibwe. The latter name was transliterated into French and English by colonists of those cultures. Today they have three federally recognized tribes, together with the Meskwaki (Fox), located in Iowa, Oklahoma and Kansas.

The Shawnee are an Algonquian-speaking ethnic group indigenous to North America. In colonial times they were a semi-migratory Native American nation, primarily inhabiting areas of the Ohio Valley, extending from what became Ohio and Kentucky eastward to West Virginia, Virginia, Pennsylvania, and Western Maryland; south to Alabama and South Carolina; and westward to Indiana, and Illinois.