Introduction
The surest way to win an MMA fight is to knock the opponent out cold. Not only does it put an immediate stop to the fight, but it also puts on a good show for the crowd that’s watching. Across the history of the UFC, there have been many knockout artists that have put on a show in the cage, and many of them tie for KO wins.
So, let’s take a look at all of them. Note that we’re looking at the most knockouts in all bouts, not just title bouts. If you’re interested in big-league MMA fighting and how the fighters are besting one another, you may be interested in placing bets on the outcomes of fights. If that’s you, you’ll want to check out UFC fight night prelims.
12 KO Wins
The most knockout wins accrued by an individual fighter is 12. Only two fighters in the entire history of the UFC have knocked a whole dozen of their opponents out. Those fighters are Vitor Belfort and Derrick Lewis.
Vitor Belfort
To those who know his fighting prowess, it’s no surprise that Vitor Belfort is at the top of this list. He’s known for his explosive punching, especially when he gets the opponent down, where he hammers punches down hard and fast onto them until the referee calls an end to things. That’s how most of his KOs were decided, though some were also head kicks. Needless to say, opponents who face Belfort are in trouble if they find themselves on the mat.
Derrick Lewis
The other fighter who has knocked out 12 people is Derrick Lewis. While Vitor’s career is winding down, Lewis is nearly a whole decade younger and may be able to rack up another knockout or two in the future. He’s currently #3 in the official UFC heavyweight rankings and is known for his “swangin’ and bangin’,” a term he uses to describe aggressive stand-up fighting. Grapplers have often had trouble getting him down and, in trying, they’ve ended up on the wrong side of his fists.
[#7 W105] 
[#8 MW] 
[#13 MW] 
[#6 LW] 
