The 2001 SummerSlam was the 14th annual SummerSlam professional wrestling pay-per-view (PPV) event produced by the World Wrestling Federation (WWF, now WWE). It took place on August 19, 2001, at the Compaq Center at San Jose in San Jose, California. It was the last SummerSlam promoted under the WWF name, as the promotion was renamed to World Wrestling Entertainment (WWE) in May 2002. It was also the last SummerSlam held before the introduction of the brand extension in March 2002.

In the main event, The Rock defeated Booker T for the WCW Championship, after executing a Rock Bottom. The other two main matches on the card were Steve Austin versus Kurt Angle for the WWF Championship, which Angle won, after Austin was disqualified for attacking referees, and Rob Van Dam defeated Jeff Hardy in a ladder match for the WWF Hardcore Championship. The other main match on the undercard was the Winners Take All Steel cage match between WCW Tag Team Champions Undertaker and Kane and WWF Tag Team Champions Diamond Dallas Page and Kanyon, which Undertaker and Kane won, after Undertaker executed the Last Ride and pinned Page to win both titles.