Best MMA Betting Sites

We at Gambling.com have decades of combined experience testing and reviewing sports betting sites. After years of analyzing sites and reviewing feedback from real bettors, we’ve seen firsthand what makes or breaks a great betting site. Our goal is to connect you with books that aren’t just safe but offer great odds and a smooth experience from sign-up to payout.

Our team of industry-leading experts grades each of the betting sites they review on a scale of one to 10 across 10 different categories that we deem to be most important to sports bettors. To determine these scores, we don’t just sit behind a screen and rate sites—we test them, compare them, and really dig into the user experience to see how they stack up. Our process ensures we only recommend MMA betting sites that meet our high standards.

In addition to identifying the best sports betting sites, we are committed to promoting responsible gambling. That’s why we only review fully licensed operators and offer tools and resources that address responsible betting practices. When deciding which betting site to use, make sure you are wagering with a reputable book, such as the ones you find here at Gambling.com, that provides the most competitive odds possible.

In 1993, the Ultimate Fighting Championship introduced the concept of no-holds-barred fighting (eventually renamed mixed martial arts) to the Western world. Since then, the sport has exploded into the public consciousness.

MMA betting is now as popular as wagering on boxing. With a smaller pool of fighters to keep track of and events happening nearly every weekend, MMA betting is much easier to get into, so long as you know how, where to bet, and what fights to bet on.

Betting on MMA is simple and often called a “Three-way Money Line.” Odds are released on each of the three potential outcomes for a fight: Fighter A wins, Fighter B wins, or the fight is ruled a Draw by judges.

Draws are extremely rare in MMA, so betting mainly focuses on choosing winners. Most betting sites do not even offer betting on a draw. In those instances, the site will refund the bet entirely as a “push.”

American Odds

In the American odds format, the favored fighter will have a negative number next to their name, like -150, meaning you need to wager $150 (or the equivalent in your currency) to win $100, plus the return of your original stake.

For the underdog, a positive number is shown, such as +275, which means a bettor can win $275 for a $100 wager, plus the return of their initial stake.

Decimal Odds

The same odds would be represented in decimal odds as 1.67 for the favorite (-150) and 3.75 for the underdog (+275). 

To calculate your potential payout with decimal odds, you multiply your stake by the decimal number. 

For example, a $100 bet at odds of 1.67 would return $167 (including your $100 stake), while a $100 bet at 3.75 would return $375.

Fractional Odds

In fractional odds, the favorite's odds of -150 would be represented as 2/3, meaning for every $3 you stake, you’ll win $2 in profit. The underdog’s odds of +275 would be described as 11/4, meaning for every $4 you stake, you would win $11 in profit. 

To calculate your total payout, multiply your stake by the fraction and add your original stake.

For example:

• A $100 bet at 2/3 would return $166.67 (including your $100 stake).
• A $100 bet at 11/4 would return $375 (including your $100 stake).

Betting on MMA has fewer factors to consider compared to most other sports. After all, with only two fighters competing, the potential outcomes of an MMA fight are relatively limited. With so few variables, MMA betting is much easier to attack, assuming you follow a few simple rules.

• UFC: UFC is the premier global MMA organization, featuring elite fighters and a comprehensive betting landscape for every event
• Bellator: This is the second most prominent MMA organization in the world, featuring a lot of elite fighters
• Rizin: Founded in 2015, Rizin is the premier Japanese mixed martial arts organization.
• ONE Championship: Southeast Asia's MMA leader recently made several high-profile acquisitions to become a global player in MMA.
• Professional Fighters League: The PFL is an American MMA organization founded in 2017. Similar to traditional sports leagues, it features a regular season, playoffs, and a championship.
• Konfrontacja Sztuk Walki: KSW is the premier MMA organization in Poland.
• Invicta: Invicta is an all-female organization, primarily a feeder league to the UFC.

We at Gambling.com take responsible gambling very seriously. Our main goals are to connect you with reliable betting operators while maintaining a safe gambling environment for all users.

MMA betting sites must follow strict protocols to spot, prevent, and reduce gambling-related harm. These aren't optional measures; they're legal requirements and essential safeguards that protect vulnerable players from developing problematic habits.

We always keep these requirements in mind whenever we review and rate a betting site, and we only partner with licensed operators that adhere to legal standards. Moreover, all betting sites we review here have responsible gambling tools and resources to help you stay in control of your betting.