State Route 93 (SR 93) is a north–south highway that stretches from Ironton at U.S. Route 52 to State Route 261 in Akron. It is the third longest state route in Ohio. The route from Ironton to West Lafayette was once signed as State Route 75. In 1962, to eliminate confusion with an interstate in Ohio having the same number, State Route 75 was replaced by State Route 93 which had previously terminated in West Lafayette.