The 2004 Vengeance was the fourth annual Vengeance professional wrestling pay-per-view (PPV) event produced by World Wrestling Entertainment (WWE). It was held exclusively for wrestlers from the promotion's Raw brand division. The event took place on July 11, 2004, from the Hartford Civic Center in Hartford, Connecticut.

The main event was Chris Benoit versus Triple H for the World Heavyweight Championship, which Benoit won by pinning Triple H with a roll-up. The predominant match on the card was Randy Orton versus Edge for the WWE Intercontinental Championship, which Edge won by pinfall after executing a Spear. The primary matches on the undercard included Matt Hardy versus Kane in a No Disqualification match, which Hardy won after he hit Kane with a steel chair to get the pin, and Batista versus Chris Jericho, which Batista won by pinfall after executing a Batista Bomb.

The event grossed US$370,000 with 7,000 ticket sales and had a 0.43 buyrate. Following the event, Benoit began a feud with Randy Orton over the World Heavyweight Championship. The two would have a match at SummerSlam, where Orton would win the World Heavyweight Championship, and become the youngest world champion in WWE history. Edge went on to defend the Intercontinental Championship against Batista and Chris Jericho in a Triple Threat match at SummerSlam. Kane and Matt Hardy continued their feud at SummerSlam in a "Till Death Do Us Part" match, where the winner would get to marry Lita. Kane was the victor, and as a result, Lita had to marry Kane.