UFC 86: Jackson vs. Griffin was a mixed martial arts (MMA) pay-per-view event held by the Ultimate Fighting Championship (UFC) on July 5, 2008, at the Mandalay Bay Events Center in Las Vegas, Nevada.

The main event was between Quinton "Rampage" Jackson and Forrest Griffin, coaches on The Ultimate Fighter: Team Rampage vs.

Team Forrest, and was for Jackson's UFC Light Heavyweight Championship.

[1] A welterweight bout between Steve Bruno and Chris Wilson was originally scheduled to take place at this event.

[2] However, the fight would be postponed and instead took place at UFC 87 on August 9, 2008.