The 2018 Oklahoma gubernatorial election was held on November 6, 2018, to elect the next governor of Oklahoma. Incumbent Republican governor Mary Fallin was term-limited, and was prohibited by the Constitution of Oklahoma from seeking another gubernatorial term. Republican Businessman Kevin Stitt was elected with 54.3% of the vote, defeating Democratic nominee and former Oklahoma attorney general Drew Edmondson.
Primary elections occurred on June 26, 2018. Edmondson won the Democratic nomination outright. Stitt, however, faced a runoff election against former Oklahoma City mayor Mick Cornett. On August 28, 2018, Stitt won the Republican primary runoff and became the Republican nominee for the office. The Libertarian Party also held a primary, which advanced to a runoff, with Chris Powell, a former chair of the Libertarian Party of Oklahoma, winning the nomination.
This was the first election in which the Libertarian Party has been on the ballot to participate in a gubernatorial election in Oklahoma, and the only time since 1986 that a candidate from the incumbent president's party was elected Governor of Oklahoma.
A member of the Cherokee Nation, Stitt became the first tribally enrolled Native American to serve as governor of a U.S. state.
Republican primary.
Endorsements.
 ;templatestyles src="Endorsements box/styles.css"/ ;Mick Cornett
 ;templatestyles src="Endorsements box/styles.css"/ ;Todd Lamb
 ;templatestyles src="Endorsements box/styles.css"/ ;Gary Richardson
 ;templatestyles src="Endorsements box/styles.css"/ ;Kevin Stitt
First round.
Polling.
 ;templatestyles src="Template:Hidden begin/styles.css"/ ;Hypothetical polling
References.
 ;templatestyles src="Reflist/styles.css" / ;
External links.
Official campaign websites