Clarkston is a town in Cache County, Utah, United States. The population was 749 at the 2020 census. It is included in the Logan, Utah-Idaho Metropolitan Statistical Area. The community celebration is held in June each year and is known as The Pony Express Days. Clarkston is noted for being the last home of Martin Harris, one of the Three Witnesses of the Book of Mormon. He is buried in Clarkston, and every other year a pageant commemorates his life. The pageant was discontinued in 2018.