The 2018 Extreme Rules was the 10th annual Extreme Rules professional wrestling pay-per-view (PPV) and livestreaming event produced by WWE. It was held for wrestlers from the promotion's Raw and SmackDown brand divisions. The event took place on July 15, 2018, at the PPG Paints Arena in Pittsburgh, Pennsylvania. The concept of Extreme Rules is that the event features various hardcore-based matches.

The card consisted of 12 matches, including two on the Kickoff pre-show. Only three matches, including one pre-show match, were contested under a hardcore stipulation. In the main event, Dolph Ziggler retained Raw's Intercontinental Championship by defeating Seth Rollins 5–4 in an Iron Man match that went into sudden death overtime. This was the first time that an Intercontinental Championship match was the main event of a WWE pay-per-view since Backlash in April 2001. In the penultimate match, AJ Styles retained SmackDown's WWE Championship against Rusev. In other prominent matches, Alexa Bliss retained the Raw Women's Championship against Nia Jax in an Extreme Rules match, Bobby Lashley defeated Roman Reigns, and Shinsuke Nakamura defeated Jeff Hardy to win SmackDown's United States Championship.