Canadian is a city in, and the county seat of, Hemphill County, Texas, United States. The population was 2,339 at the 2020 census, down from 2,649 in 2010. It is named for the nearby Canadian River, a tributary of the Arkansas River. Incorporated in 1908, Canadian is sometimes called "the oasis of the High Plains". Canadian is on the eastern side of the Texas Panhandle, close to the border with Oklahoma.