UFC 151: Jones vs. Henderson was a planned mixed martial arts event that was to be held by the Ultimate Fighting Championship on September 1, 2012, at the Mandalay Bay Events Center in Las Vegas, Nevada. It was to be headlined by a UFC Light Heavyweight Championship bout, between champion Jon Jones and former dual-division PRIDE FC and Strikeforce champion Dan Henderson. However, the event was cancelled on August 23, when the UFC announced Henderson was unable to fight due to injury, and Jones refused to take a replacement fight against longtime middleweight contender, Chael Sonnen.

Jonathan Dwight Jones is an American professional mixed martial artist signed to the Ultimate Fighting Championship (UFC), where he is the UFC Heavyweight Champion. A professional competitor since 2008, Jones was previously the UFC Light Heavyweight Champion from 2011 to 2015 and from 2018 to 2020, as well as the interim UFC Light Heavyweight Champion in 2016. As of November 7, 2023, he is #2 in the UFC men's pound-for-pound rankings. He is regarded as one of the greatest mixed martial artists of all time.