The 2011 SummerSlam was the 24th annual SummerSlam professional wrestling pay-per-view (PPV) event produced by WWE. It was held for wrestlers from the promotion's Raw and SmackDown brand divisions. The event took place on August 14, 2011, at Staples Center in Los Angeles, California for the third consecutive year. It was the final WWE pay-per-view event held before the dissolution of the original brand extension, which was introduced in March 2002, although the brand split would be reintroduced in July 2016.

The card consisted of eight matches, including one on the pre-show. In the main event, WWE Champion CM Punk defeated WWE Champion John Cena to become the Undisputed WWE Champion with Triple H as the special guest referee, after which, Alberto Del Rio cashed in his Money in the Bank briefcase and defeated CM Punk to win the WWE Championship. In another prominent match, Randy Orton defeated Christian in a No Holds Barred match to regain the World Heavyweight Championship. SummerSlam attracted a sellout crowd of 17,404 fans at Staples Center in Los Angeles, grossing more than $1 million, marking the highest grossing SummerSlam held at Staples Center. The event garnered 296,000 pay-per-view buys, down from 350,000 buys the previous year.