city, Fremont county, west-central Wyoming, U.S. It lies along the Bighorn River at the mouth of the Wind River. Founded as Wadsworth in 1906, it was renamed Riverton because of its location near the convergence of four rivers.

Riverton is a shipping point for the Wind River basin, which is irrigated by the Riverton Reclamation Project. The city has livestock interests, uranium and sulfuric acid plants, and mills that produce railroad cross ties and fence posts. Oil and natural-gas fields are nearby. Riverton is home to Central Wyoming College (1966; two-year). The city is adjacent to the Wind River Indian (Shoshone and Arapaho) Reservation. Inc. 1906. Pop. (1990) 9,202; (2000) 9,310.