Last updated: July 1, 2026
Quick Definition
Biting in MMA is the use of the teeth against an opponent, and it is banned in every sanctioned bout. Under the Unified Rules of Mixed Martial Arts, biting in any form counts as a foul and can cost a fighter the fight on the spot.
What is biting in MMA?
Biting is what it sounds like: closing the teeth on any part of an opponent during a fight. The Unified Rules of Mixed Martial Arts, the ruleset the UFC and most athletic commissions follow, state it in six plain words: “Biting in any form is illegal” (Association of Boxing Commissions, Unified Rules of MMA).
It belongs on the same list of fouls as eye gouging and headbutts, the actions the sport treats as off-limits no matter the situation. Referees give it no leeway, and no promotion carves out an exception.
The rule also puts a duty on the fighter being bitten. A referee circling a clinch cannot always see teeth touch skin, so the Unified Rules tell a fighter to signal the referee if they are being bitten during a bout (Association of Boxing Commissions). That instruction is small, but it decides how these situations actually play out in the cage.
Why biting is banned
Safety is the first reason. A human bite can break the skin and carries a genuine risk of infection, and that kind of injury has no place in a sport built around measurable skill.
Sportsmanship is the second. Biting reads as the move of a desperate street scrap rather than a licensed contest, and shedding that image is exactly what MMA spent decades working to do.
The ban is old. When the first UFC event took place on November 12, 1993, it was sold as a competition with almost no rules, yet even that night outlawed two things: biting and eye gouging (Gold BJJ). Nearly everything about the sport has changed since. This prohibition has not.
What happens if a fighter bites
Only the referee can call a foul in MMA. A judge might see one from cageside, but they have no power to penalize it. When a referee does act, the punishment scales with how serious and deliberate the foul was, running from a verbal warning at the mild end up to an outright disqualification. A point deduction sits somewhere in the middle.
Biting almost never lands at the mild end. Referees treat it as a flagrant foul, the type that can end a fight immediately with no warning first. The Unified Rules are specific here: an intentional foul that injures an opponent badly enough to halt the bout hands the offender a disqualification loss. Compare that to an accidental foul, say, an unintentional eye poke, which can instead be ruled a no contest. Teeth sinking into an arm rarely reads as an accident.
Punishment tends to reach past the disqualification itself. A state athletic commission can add fines and suspensions, and a promotion can release the fighter outright.
The clearest modern case unfolded in March 2024. Brazilian flyweight Igor Severino bit Andre Lima on the arm in the second round of their bout at a UFC Fight Night event in Las Vegas. Lima felt it, raised his arm, and told referee Chris Tognoni; a ringside doctor checked the bite mark, and Tognoni waved the fight off at 2:52 of the round (ESPN). Both men were making their UFC debut.
The fallout was steep. Severino lost by disqualification, and UFC CEO Dana White cut him from the roster that same night (ESPN). The Nevada State Athletic Commission followed with a nine-month suspension and a $2,000 fine (Fox News / MMA Junkie). Severino later rebuilt his career overseas with Oktagon MMA (Sports Illustrated).
How biting compares to similar fouls
People often lump biting in with a small group of other close-range fouls that go after the face and mouth. They are not identical, and how a referee reads intent can change the penalty.
| Foul | What it is | Typical outcome |
|---|---|---|
| Biting | Using the teeth on any part of the opponent | Flagrant foul, often immediate disqualification |
| Fish-hooking | Putting fingers in the mouth, nose, or cheek and pulling | Warning, point deduction, or disqualification if flagrant |
| Eye gouging | Pressing a finger, thumb, or elbow into the eye | Warning through disqualification, based on damage and intent |
| Spitting | Spitting at an opponent | Unsportsmanlike foul, can draw a deduction or disqualification |
Each of these fouls goes after a soft, unprotected area that no legitimate technique needs. The difference is doubt. An eye poke can be a genuine accident from an open glove, the sort of thing that happens when two fighters are trading punches at close range. Teeth on skin almost never are.
Frequently Asked Questions
Is biting ever legal in MMA?
No. Every sanctioned promotion follows a ruleset that bans biting, the UFC and ONE Championship included. No weight class, format, or amateur tier permits it.
Has a fighter ever been disqualified in the UFC for biting?
Yes. Igor Severino was disqualified and then released after biting Andre Lima in March 2024, the most prominent biting case in modern UFC history (ESPN).
Is biting a foul or an automatic disqualification?
It is a foul on paper. Because referees treat it as flagrant, though, they tend to skip straight to disqualification instead of handing out a warning or deducting a point.
Is spitting treated the same as biting?
Both are fouls, and both are judged as unsportsmanlike. Spitting is treated as its own act in the rules, and it can carry a comparable penalty, up to a deduction or disqualification.
Do amateur and professional rules differ on biting?
No. The ban runs through the Unified Rules and the equivalent amateur rulesets, which keeps biting illegal at every level of sanctioned competition.
Sources
- Association of Boxing Commissions and Combative Sports. “Unified Rules of MMA (Fouls).” Accessed June 2026.
https://www.abcboxing.com/wp-content/uploads/2015/09/unified_rules_fouls_rev0816.pdf - UFC. “Unified Rules of Mixed Martial Arts.” Accessed June 2026.
https://www.ufc.com/unified-rules-mixed-martial-arts - ESPN. “Igor Severino released by UFC for biting opponent in debut.” March 24, 2024.
https://www.espn.com/mma/story/_/id/39796422/igor-severino-cut-ufc-biting-opponent-arm/ - CNN. “Andre Lima vs. Igor Severino: UFC fighter disqualified for biting opponent.” March 24, 2024.
https://www.cnn.com/2024/03/24/sport/igor-severino-andre-lima-bite-ufc-spt-intl/index.html - Fox News / MMA Junkie. “UFC fighter Igor Severino suspended nine months, fined after biting opponent.” June 2024.
https://www.foxnews.com/sports/ufc-fighter-igor-severino-suspended-nine-months-fined-after-biting-opponent-during-fight-report - Sports Illustrated. “Ex-UFC Fighter Banned for Biting Opponent Signs with Major Promotion.” August 27, 2024.
https://www.si.com/fannation/mma/news/ex-ufc-fighter-banned-for-biting-opponent-signs-with-major-promotion - Gold BJJ. “12 Illegal MMA Moves That are Banned in the UFC.” Accessed June 2026.
https://goldbjj.com/blogs/roll/illegal-mma-moves
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