
The year 2018 is the 8th year in the history of the ONE Championship, a mixed martial arts, kickboxing and muay thai promotion based in Singapore.

The year 2018 is the 26th year in the history of the Ultimate Fighting Championship (UFC), a mixed martial arts promotion based in the United States and founded in November 1993. This year, the UFC celebrated its 25th anniversary, and an anniversary event was held on November 10, 2018 in Denver, Colorado, the city where the historical UFC 1 was held.

2018 is the second year in the history of Legacy Fighting Alliance, a mixed martial arts promotion based in the United States.

UFC 220: Miocic vs. Ngannou was a mixed martial arts event produced by the Ultimate Fighting Championship that was held on January 20, 2018, at TD Garden in Boston, Massachusetts.

UFC 221: Romero vs. Rockhold was a mixed martial arts event produced by the Ultimate Fighting Championship that was held on February 11, 2018, at Perth Arena in Perth, Western Australia.

UFC 222: Cyborg vs. Kunitskaya was a mixed martial arts event produced by the Ultimate Fighting Championship that was held on March 3, 2018, at the T-Mobile Arena in Paradise, Nevada, part of the Las Vegas metropolitan area.

UFC 223: Khabib vs. Iaquinta was a mixed martial arts event produced by the Ultimate Fighting Championship that was held on April 7, 2018, at the Barclays Center in Brooklyn, New York.

UFC 224: Nunes vs. Pennington was a mixed martial arts event produced by the Ultimate Fighting Championship that was held on May 12, 2018, at the Jeunesse Arena in Rio de Janeiro, Brazil.

UFC 225: Whittaker vs. Romero 2 was a mixed martial arts event produced by the Ultimate Fighting Championship that was held on June 9, 2018, at the United Center in Chicago, Illinois.

UFC 226: Miocic vs. Cormier was a mixed martial arts event produced by the Ultimate Fighting Championship held on July 7, 2018, at the T-Mobile Arena in Paradise, Nevada, part of the Las Vegas Metropolitan Area.

UFC 227: Dillashaw vs. Garbrandt 2 was a mixed martial arts event that was produced by the Ultimate Fighting Championship and held on August 4, 2018, at the Staples Center in Los Angeles, California.

UFC 228: Woodley vs. Till was a mixed martial arts event produced by the Ultimate Fighting Championship that was held on September 8, 2018 at American Airlines Center in Dallas, Texas.

UFC 229: Khabib vs. McGregor was a mixed martial arts event produced by the Ultimate Fighting Championship (UFC) that was held on October 6, 2018 at T-Mobile Arena in Paradise, Nevada, part of the Las Vegas Metropolitan Area.

UFC 230: Cormier vs. Lewis was a mixed martial arts event produced by the Ultimate Fighting Championship that was held at Madison Square Garden in New York City, New York.

UFC 231: Holloway vs. Ortega was a mixed martial arts event produced by the Ultimate Fighting Championship held on December 8, 2018 at Scotiabank Arena in Toronto, Ontario, Canada.

UFC 232: Jones vs. Gustafsson 2 was a mixed martial arts event produced by the Ultimate Fighting Championship that was held on December 29, 2018 at The Forum in Inglewood, California.

UFC Fight Night: Barboza vs. Lee was a mixed martial arts event produced by the Ultimate Fighting Championship that was held on April 21, 2018, at Boardwalk Hall in Atlantic City, New Jersey.

UFC Fight Night: Blaydes vs. Ngannou 2 was a mixed martial arts event produced by the Ultimate Fighting Championship that was held on November 24, 2018 at Cadillac Arena in Beijing, China.

UFC Fight Night: Cowboy vs. Edwards was a mixed martial arts event produced by the Ultimate Fighting Championship that was held on June 23, 2018, at Singapore Indoor Stadium in Kallang, Singapore.

UFC Fight Night: Cowboy vs. Medeiros was a mixed martial arts event produced by the Ultimate Fighting Championship that was held on February 18, 2018, at Frank Erwin Center in Austin, Texas, United States.

UFC Fight Night: dos Santos vs. Ivanov was a mixed martial arts event produced by the Ultimate Fighting Championship that was held on July 14, 2018 at CenturyLink Arena in Boise, Idaho, United States.

UFC Fight Night: dos Santos vs. Tuivasa was a mixed martial arts event produced by the Ultimate Fighting Championship that was held on 2 December 2018 at Adelaide Entertainment Centre in Adelaide, Australia.

UFC Fight Night: Gaethje vs. Vick was a mixed martial arts event produced by the Ultimate Fighting Championship that was held on August 25, 2018 at Pinnacle Bank Arena in Lincoln, Nebraska, United States.

UFC Fight Night: Hunt vs. Oleinik was a mixed martial arts event produced by the Ultimate Fighting Championship held on September 15, 2018 at Olimpiyskiy Stadium in Moscow, Russia.

UFC Fight Night: Machida vs. Anders was a mixed martial arts event produced by the Ultimate Fighting Championship held on February 3, 2018, at Arena Guilherme Paraense in Belém, Brazil.

UFC Fight Night: Magny vs. Ponzinibbio was a mixed martial arts event produced by the Ultimate Fighting Championship that was held on November 17, 2018 at Estadio Mary Terán de Weiss in Buenos Aires, Argentina.

UFC Fight Night: Maia vs. Usman was a mixed martial arts event produced by the Ultimate Fighting Championship that was held on May 19, 2018, at Movistar Arena in Santiago, Chile.

UFC Fight Night: Rivera vs. Moraes was a mixed martial arts event produced by the Ultimate Fighting Championship that was held on June 1, 2018, at Adirondack Bank Center in Utica, New York.

UFC Fight Night: Santos vs. Anders was a mixed martial arts event produced by the Ultimate Fighting Championship held on September 22, 2018 at Ginásio do Ibirapuera in São Paulo, Brazil.

UFC Fight Night: Shogun vs. Smith was a mixed martial arts event produced by the Ultimate Fighting Championship held on July 22, 2018, at Barclaycard Arena in Hamburg, Germany.

UFC Fight Night: Stephens vs. Choi was a mixed martial arts event produced by the Ultimate Fighting Championship held on January 14, 2018, at Scottrade Center in St. Louis, Missouri.

UFC Fight Night: The Korean Zombie vs. Rodríguez was a mixed martial arts event produced by the Ultimate Fighting Championship that was held on November 10, 2018 at Pepsi Center in Denver, Colorado, United States.

UFC Fight Night: Thompson vs. Till was a mixed martial arts event produced by the UFC that was held on May 27, 2018, at the Echo Arena in Liverpool, England.

UFC Fight Night: Volkan vs. Smith was a mixed martial arts event produced by the Ultimate Fighting Championship that was held on October 27, 2018 at Avenir Centre in Moncton, New Brunswick, Canada.

UFC Fight Night: Werdum vs. Volkov (also known as UFC Fight Night 127) was a mixed martial arts event produced by the Ultimate Fighting Championship that was held on March 17, 2018, at The O2 Arena in London, England.

UFC on Fox: Alvarez vs. Poirier 2 was a mixed martial arts event produced by the Ultimate Fighting Championship held on July 28, 2018 at the Scotiabank Saddledome in Calgary, Alberta, Canada.

UFC on Fox: Emmett vs. Stephens was a mixed martial arts event produced by the Ultimate Fighting Championship held on February 24, 2018, at Amway Center in Orlando, Florida, United States.

UFC on Fox: Jacaré vs. Brunson 2 was a mixed martial arts event produced by the Ultimate Fighting Championship held on January 27, 2018, at Spectrum Center in Charlotte, North Carolina, United States.

UFC on Fox: Lee vs. Iaquinta 2 was a mixed martial arts event produced by the Ultimate Fighting Championship that was held on December 15, 2018 at Fiserv Forum in Milwaukee, Wisconsin, United States.

UFC on Fox: Poirier vs. Gaethje was a mixed martial arts event produced by the Ultimate Fighting Championship that was held on April 14, 2018, at the Gila River Arena in Glendale, Arizona.