The 2016 SummerSlam was the 29th annual SummerSlam 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 August 21, 2016, at the Barclays Center in Brooklyn, New York for the second consecutive year. It was the first PPV event held after the brand extension, which was reintroduced in July, went into full effect.

Twelve matches were contested at the event, including three on the Kickoff pre-show. In the main event, which was an interbrand match, Raw's Brock Lesnar defeated SmackDown's Randy Orton by technical knockout. In another marquee match, "The Demon King" Finn Bálor defeated Seth Rollins to become the inaugural WWE Universal Champion, which was introduced to be Raw's world championship. In other prominent matches, Dean Ambrose defeating Dolph Ziggler to retain SmackDown's WWE World Championship, and AJ Styles defeated John Cena in a singles match.