For neighboring states see also the following categories: Colorado, Kansas, Missouri, Arkansas, Texas and New Mexico.

Wikimedia Commons has media related to Oklahoma.

• Oklahoma — a U.S. state in the Great Plains and southern central United States regions.

Pages in this category should be moved to subcategories where applicable. This category may require frequent maintenance to avoid becoming too large. It should directly contain very few, if any, pages and should mainly contain subcategories.