The 2001 King of the Ring was the ninth annual King of the Ring professional wrestling pay-per-view (PPV) event produced by the World Wrestling Federation (WWF, now WWE) that featured the 15th King of the Ring tournament. It was the final King of the Ring PPV and tournament held under the WWF name as the promotion was renamed to World Wrestling Entertainment (WWE) in May 2002, thus the Last King Of The Ring of the Attitude Era. The event took place on June 24, 2001, at the Continental Airlines Arena in East Rutherford, New Jersey. The main event was a Triple threat match, a match involving three competitors, for the WWF Championship. Stone Cold Steve Austin defeated Chris Benoit and Chris Jericho to retain the title. The undercard featured the 2001 King of the Ring tournament, which was won by Edge.

There were other matches on the undercard, including a Street Fight between Kurt Angle and Shane McMahon, a WWF Light Heavyweight Championship match between champion Jeff Hardy and challenger X-Pac and a WWF Tag Team Championship between champions Dudley Boyz (Bubba Ray Dudley and D-Von Dudley) and the challenger team of Kane and Spike Dudley. The show is also notable for featuring the WWF debut of Booker T.