UFC 67: All or Nothing was a mixed martial arts event held by Ultimate Fighting Championship.

[6] Two former PRIDE stars made their debuts in the UFC at this event.

2006 PRIDE Open-Weight Grand Prix Champion Mirko Cro Cop made his debut in the United States and in the UFC at UFC 67 against Eddie Sanchez.

[7][8] Quinton Jackson — whose contract was acquired by the UFC after Zuffa's buyout of the World Fighting Alliance — made his debut against Marvin Eastman, whose contract with the WFA was also bought by Zuffa.

[9] It was also the UFC debut of future Light Heavyweight Champion, Lyoto Machida and also the debut of the future Lightweight Champion Frankie Edgar.