SummerSlam (2006) was the nineteenth annual SummerSlam professional wrestling pay-per-view event produced by World Wrestling Entertainment (WWE). It took place on August 20, 2006, at the TD Banknorth Garden in Boston, Massachusetts, and involved performers from the Raw, SmackDown!, and ECW brands. This marked the first inter-brand pay-per-view including the ECW brand.

The main match on the Raw brand pitted Edge against John Cena for the WWE Championship, which Edge won by pinfall after hitting Cena in the back of the head with a pair of brass knuckles. The main match on the SmackDown brand pitted King Booker against Batista for the World Heavyweight Championship, which Batista won by disqualification following interference from Queen Sharmell. The primary match on the ECW brand pitted The Big Show against Sabu in an Extreme rules match for the ECW World Championship. Big Show won the match and retained the title after pinning Sabu following a chokeslam through a table. The undercard included D-Generation X (Triple H and Shawn Michaels) against Vince and Shane McMahon) as well as Hulk Hogan against Randy Orton, which is Hogan's last match in the WWE.