The 2018 Ohio gubernatorial election took place on November 6, 2018, to elect the next governor of Ohio, concurrently with the election of Ohio's Class I U.S. Senate seat, as well as other elections to the United States Senate in other states, elections to the United States House of Representatives, and various Ohio and local elections. Incumbent Republican Governor John Kasich was term-limited and could not seek a third consecutive term.
Republicans nominated Ohio Attorney General and former U.S. senator Mike DeWine, while Democrats nominated former Consumer Financial Protection Bureau Director and former Ohio attorney general Richard Cordray. This was the second contest between DeWine and Cordray, following the 2010 attorney general election, which DeWine won, 47.5% to 46.3%.