The Ultimate Fighting Championship (UFC) is the largest Mixed Martial Arts promotion company in the world, which hosts most of the top-ranked fighters in the sport and produces events worldwide. Based in the United States, the UFC has eight weight divisions and enforces the Unified Rules of Mixed Martial Arts.Dana White serves as the president of the UFC while Frank and Lorenzo Fertitta control the UFC's parent company, Zuffa, LLC.

The first UFC event was held in 1993 in Denver, Colorado. The purpose of the event was to identify the most effective martial art in a real fight between competitors of different fighting disciplines, including Boxing, Brazilian Jiu-Jitsu, Tae Kwon Do, Wrestling, Muay Thai, Karate and other styles. In subsequent competitions, fighters ventured outside their base style to utilize effective techniques from other disciplines, which indirectly helped create an entirely separate style of fighting known as present-day mixed martial arts.

With a cable-television deal and expansion into Canada, Europe, Australia the Middle East,Asia and new markets within the United States, the UFC as of 2011^[update] has gained in popularity, along with greater mainstream-media coverage. As of 2001^[update] viewers can access UFC programming on pay-per-view television in the U.S., Brazil, Australia, Canada, New Zealand and Italy. UFC programming can also be found on FX, Fuel TV, and Fox in the U.S., on ESPN in the United Kingdom and Ireland, as well as in 150 countries and 22 different languages worldwide. UFC also carries a mobile site for on-the-go users and a Sports Bars page for fans to find places showing the pay-per-view. It is also available on the Roku streaming player.

Francisco Santos Miranda, III (born May 24, 1979), better known as Frank Mir, is an American mixed martial artist, as well as a black belt in Brazilian Jiu-Jitsu and Kenpō Karate.

Mir, one of the most accomplished heavyweights in MMA history, is a two time UFC Heavyweight Champion . He currently holds the record for most victories in the heavyweight division of the UFC with 14 and most wins by submission in UFC Heavyweight division history with 8. He is also the only man in UFC history to win a bout by toe hold. As of January 2012 he is ranked the #4 In the ESPN MMA Power Rankings.He holds the distinction of being the first and only man to both knock out and submit MMA legend Antônio Rodrigo Nogueira. Mir is the only person to submit former UFC Heavyweight Champion and NCAA Division I wrestler Brock Lesnar and highly regarded striker Cheick Kongo. Frank Mir has had more fights in the UFC than anyone else currently competing in the heavyweight division.

His father convinced him to begin wrestling, on the basis that it could help him avoid submissions. Mir then began wrestling at Bonanza High School in Las Vegas, Nevada where during his junior year he lost his first nine matches. During his senior year (1998) he went 44–1 and won the state championship. He was also on the school's football team that reached the Southern Zone semifinals in 1997 and where he played as fullback and defensive end. He also took up track and field in 1998 where his discus throw of 177 feet, 10 inches is still a Sunset Regional record.

Ronda Rousey (born February 1, 1987) is an American judoka and mixed martial artist and the current Strikeforce Women's Bantamweight Champion. She has finished all of her opponents by armbar in the first round. She formerly trained at the Olympic Training Center in Wakefield, Massachusetts under guidance of Jimmy Pedro and is now part of Team Hayastan in Santa Monica, California.

Rousey trains under Gokor Chivichyan and Edmond Tarverdyan of the Glendale Fighting Club in Glendale, CA. Rousey also trains with Leo Frincu and Gene Lebell, along with Team Hayastan fighters such as Manny Gamburyan, Karen Darabedyan, Sako Chivitchian and Sevak Magakian. She is managed by Darin Harvey of Fight Tribe MMA.

Rousey is currently the #1-ranked pound-for-pound female MMA fighter in the world by MMARising.com, and is ranked #1 at 135 pounds and #2 at 145 pounds according to the Unified Women's MMA Rankings.

At just 17, Rousey qualified for the 2004 Olympic Games in Athens, becoming the youngest judo player in the entire Games. Also in 2004, Rousey won a gold medal at the 2004 World Junior Judo Championships in Budapest, Hungary.

Holly Holm (born October 17, 1981) is a female boxer (who won titles in three divisions), mixed martial artist, and former kickboxer currently contracted under Fresquez Productions promoted by Lenny Fresquez.

5'8" southpaw Holly Holm from Sandia Heights in Albuquerque, New Mexico was born on October 17, 1981. Holm grew up in Bosque Farms and graduated from Manzano High School in 2000 and studied for a year at the University of New Mexico. She played soccer and tried gymnastics, swimming and diving before getting into boxing and kickboxing. Holly's path to a boxing career began with aerobics. "I started aerobics to keep in shape, saw the (kickboxing) class, thought it looked pretty cool, so I thought I'd try it for one fight and see what it was like," says Holm.

Her aerobics instructor was Mike Winkeljohn, who also taught kickboxing. Winklejohn soon saw Holm's potential. "She's got that instinct," he says, "When she gets hit, she knows it's time to come back. I wish I could bottle (what she has) and sell it." "(Boxing) came easier to me than I thought it would," says Holm. "When I first started, my punches seemed real clumsy, but Mr. Winkeljohn is a great instructor. He helped me with my technique, and he felt ... he could work with me." In Kansas City, MO in the Fall of 2001, Holly competed in the International Kickboxing Federation and Ringside's annual amateur kickboxing USA national championship tournament. Holly defeated Chrisanne Roseleip by unanimous decision in the final round of the tournament, winning the national title in the international rules adult women's welterweight division, which would mark her last kickboxing appearance before her pro debut. Her overall amateur kickboxing record stood at 6-0-2.

Miesha Tate (pronounced /ˈmiːʃə/; born August 18, 1986) is a professional mixed martial artist. She is the former Strikeforce Women's Bantamweight Champion and the current Freestyle Cage Fighting Women's Bantamweight Champion. She has also competed and won a silver medal in the FILA Grappling Championships.

Tate is currently the #6-ranked pound-for-pound female MMA fighter in the world by MMARising.com and the #3-ranked 135-pound female fighter according to the Unified Women's MMA Rankings.

Tate wrestled on the boys' wrestling team in high school. In 2005, she won the high school women's state championship and went on to win nationals at the World Team Trials in the 158 lb division.

While attending Central Washington University Miesha's colleague, Rosalia Watson, encouraged her to attend the mixed martial arts club with her. Soon after attending, Tate officially joined the mixed martial arts sport club at Central Washington University that was run by her current boyfriend and trainer, Bryan Caraway. She amassed a 5-1 amateur record in MMA before turning pro.