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Idris Elba is a modern Renaissance man, and MMA is one of his many interests. A 2017 documentary called 'Idris Elba: Fighter' followed his journey to become a professional kickboxer.
Bieber created a stir in 2019 when he challenged Tom Cruise to a fight in the Octagon on Twitter! Conor McGregor declared that he'd be willing to host the fight if Cruise accepted, but nothing came of it...yet.
Ashton Kutcher has been studying jiu-jitsu with a famous master for years, and has earned himself a purple belt.
Fans may have noticed a change in Wiz Khalifa's physique over the past couple of years. The famous stoner started MMA training and gained 32 lbs (15 kg) of muscle!
Halle Berry has been training with MMA champion Brian Ortega in preparation for her role in the movie 'Bruised.' It's her first time in the director's chair, but she also stars as a washed-up MMA fighter struggling for redemption.
Cindy Crawford is another model who isn't afraid of a bit of blood. She's pictured here at a fight beside Dana White.
Actor Olivia Munn is a regular at the UFC and is good friends with president Dana White. She's often seen partying with the MMA pros after the fight.
Brazilian supermodel Adriana Lima has always used martial arts as a key part of her fitness routine. She spent 20 years with Victoria's Secret so it must be working.
Robert Downey Jr. is an avid MMA fan. He was once a guest on the Joe Rogan Podcast where he expressed his deep knowledge and love of the sport.
Efron also said he was shocked to see he'd be given a seat beside Madonna at the epic Alvarez vs. McGregor fight. She's another MMA fan apparently!
Arnold Schwarzenegger is a big fan of all fighting sports and the UFC stars love to meet him when he shows up to watch! He's pictured here with Conor McGregor.
Mandy Moore has been a UFC fan for years and even appears on TV before fights to offer insights and predictions.
Demi Lovato not only practices MMA herself, she also loves attending the fights, has dated multiple fighters, and sang the national anthem at the infamous Mayweather vs. McGregor fight. She's deep into the world of UFC!
The one place you might spot him is in the audience at a UFC event. He's a big fan and was even added as a fighter to the EA sports UFC game!
If there's a big fight, you'll always find Hugh Jackman in the front row, jumping out of his seat!
Charlize Theron is another boss actor who can handle some seriously physical roles. She trained in martial arts for months for her role in 'Atomic Blonde,' and ended up doing most of her own stunts.
Matt Damon was spotted front row next to his buddy and fellow UFC fan Chris Hemsworth. It's no surprise that Hemsworth follows a strict fitness regime to maintain his Thor physique, and it includes lots of martial arts.
Justin Bieber has been a fan of MMA for years, frequently attending UFC fights. He's pictured here with UFC president Dana White.
Surprise surprise, Dwayne Johnson is an MMA fan!
He's heavily involved in the UFC without actually fighting. He was even presented with his own honorary BMF belt (a belt awarded to the baddest motherf***er in UFC).
In the documentary he also trains in MMA, and discusses his love for the sport. He's also often seen ringside at UFC events.
Boxing legend Mike Tyson is another sportsman who loves to get involved with UFC. He's often interviewed for opinions on big fights.
Sources:. (The Things) (The Delite)
Brazilian supermodel Gisele Bündchen has probably done all sorts of sports to keep in shape, but she says MMA is the most fun way to release stress!
Zac Efron expressed his love of UFC on 'Jimmy Kimmel Live!' and said he's a big Conor McGregor fan.
These celebs are obsessed with MMA
Some are more surprising than others!
CELEBRITY Sports
Mixed martial arts is a wild combat sport. Fighters wearing no protection use moves from a range of different fighting disciplines to beat each other to a pulp inside a giant cage. What's not to love?
The UFC fights are some of the most publicized sporting events of the year. Getting a front-row cageside seat is the equivalent to sitting courtside during the NBA finals. Lots of celebrities are eager to get a seat close to the action, but only a handful are serious fans. Some might even take their turn in the Octagon if given the chance! Click on to see who the most famous MMA fans are.