The Missouria or Missouri are a Native American tribe that originated in the Great Lakes region of what is now the United States before European contact. The tribe belongs to the Chiwere division of the Siouan language family, together with the Ho-Chunk, Winnebago, Iowa, and Otoe.

The Ho-Chunk, also known as Hocąk, Hoocągra, or Winnebago, are a Siouan-speaking Native American people whose historic territory includes parts of Wisconsin, Minnesota, Iowa, and Illinois. Today, Ho-Chunk people are enrolled in two federally recognized tribes, the Ho-Chunk Nation of Wisconsin and the Winnebago Tribe of Nebraska.