Arikara Indians, also called Arikaree and Ree, a loosely organized confederacy of subtribes of the Caddoan language family. They were closely related to the Pawnee. They lived along the Missouri River in Nebraska and the Dakotas. They were generally unfriendly to the whites, and in 1880 were placed on a reservation at Fort Berthold in North Dakota with the Mandan and Hidatsa Indians. They became assimilated with these Indians through intermarriage and have virtually disappeared as a separate group.

The Arikara lived in earthen lodges. They raised corn, beans, squashes, and pumpkins; most of their ceremonies concerned corn. They hunted buffalo, fished with basket traps, and used round boats made of buffalo hide.