Lone Oak High School was a public secondary school (grades 9–12) located in Paducah, Kentucky, a community served by the post office of nearby Paducah. Its nickname was Purple Flash, and its school colors were purple and gold, although some athletic teams, such as the marching band and football team, had adopted purple and black, excluding gold, in the school's final years. The school closed in 2013 with the consolidation of the three high schools in the McCracken County Public Schools (MCPS) district into a new McCracken County High School.