Douglas H. Johnston, governor of the Chickasaw Nation (born 1856)

Douglas Hancock Cooper Johnston, also known as "Douglas Henry Johnston", was a tribal leader who served as the last elected governor of the Chickasaw Nation from 1898 to 1902. He was re-elected in 1904.

The Chickasaw Nation is a federally recognized Indigenous nation with headquarters in Ada, Oklahoma, in the United States. The Chickasaw Nation descends from an Indigenous population historically located in the southeastern United States, including present-day northern Mississippi, northwestern Alabama, southwestern Kentucky, and western Tennessee. Today, the Chickasaw Nation is the 12th largest Indigenous nation in the United States, with a population exceeding 80,000 citizens, most of whom reside in Oklahoma.