| Sioux |
| Indian |
| Amerind |
| A Siouan |
| Dissonant |
| An Amerind |
| Sioux tribe |
| U.S. Indian |
| Iowa native |
| N.A. Indian |
| U. S. Indian |
| Plains tribe |
| Okla. Indian |
| Sioux Indian |
| Indian tribe |
| Siouan tribe |
| Plains people |
| Plains native |
| Plains Indian |
| Siouan Indian |
| Western tribe |
| Midwest tribe |
| Siouan people |
| Indian of West |
| Western Indian |
| Oklahoma tribe |
| Plains Indians |
| Plains dweller |
| Midwest Indian |
| Oklahoma Indian |
| American Indian |
| Oklahoma native |
| Siouan tribesman |
| Chiwere speakers |
| Midwestern tribe |
| Great Plains tribe |
| Old buffalo hunter |
| North American Indian |
| Certain Native American |
| Tribe encountered by Lewis and Clark |