The Kiamichi River is a river in southeastern Oklahoma, United States of America. A tributary of the Red River of the South, its headwaters rise on Pine Mountain in the Ouachita Mountains near the Arkansas border. From its source in Polk County, Arkansas, it flows approximately 177 miles (285 km) to its confluence with the Red River at Hugo, Oklahoma.

Tuskahoma is an unincorporated community and census-designated place in northern Pushmataha County, Oklahoma, United States, four miles east of Clayton. It was the former seat of the Choctaw Nation government prior to Oklahoma statehood. The population was 102 as of the 2020 United States census.