| Datum | Země | Název, adresa | Pořadatel |
|---|---|---|---|
| 21.5.2011 |  | 915 MMA - Border Brawl 6 Dreams Cabaret Parking Lot, El Paso, Texas, United States | 915 MMA |
| 21.5.2011 | | AAFL - All American Fight League Adrenaline Combat Sports and Fitness, San Bernardino, California, United States | All American Fight League |
| 21.5.2011 |  | BAMMA 6 - Watson vs. Rua Wembley Arena, London, England, England | BAMMA |
| 21.5.2011 | | BAMMA USA - Pro Series 2 & the ALFA League 2 The Hanger at Orange County Fairgrounds, Costa Mesa, California, United States | BAMMA USA |
| 21.5.2011 |  | BF - Blessed Fight 4 O2 Church Santana, Sao Paulo, Brazil, Brazil | Blessed Fight |
| 21.5.2011 | | BFC - Bellator Fighting Championships 45 L’Auberge du Lac Casino and Resort, Lake Charles, Louisiana, United States | Bellator MMA |
| 21.5.2011 | | BITB - Battle in the Bay San Francisco, California, United States, United States | Battle in the Bay |
| 21.5.2011 | | Caged In Promotions - Cage vs. Cons Los Angeles Sports Arena | Caged In Promotions |
| 21.5.2011 | | Cagemasters - Judgement Day in May Hot Springs Convention Center, Hot Springs, Arkansas, United States | Cagemasters MMA |
| 21.5.2011 | | CFX 16 - Rumble in the Jungle 6 JunglePlex, Plymouth, Massachusetts, United States | Cage Fighting Xtreme (Mass.) |
| 21.5.2011 |  | Combate Extremo - Greco vs. Ortiz Arena Coliseo, Monterrey, Nuevo Leon, Mexico | Combate Extremo (Mexico) |
| 21.5.2011 | | Cowboy MMA - Caged Cowboys Hutchins Memorial, Ponca City, Oklahoma, United States | Cowboy MMA |
| 21.5.2011 | | Cut Throat MMA - Supremacy 3 Hammond Civic Center, Hammond, Indiana, United States | Cut Throat MMA |
| 21.5.2011 | | DH - Dragon House 6 Kezar Pavilion, San Francisco, California, United States | Dragon House MMA |
| 21.5.2011 | | Disorderly Conduct 2 - The Return Tip Top Downtown Ballroom, Omaha, Nebraska, United States | Disorderly Conduct |
| 21.5.2011 | | EFC - Bragging Rights 2 Bayfront Convention Center, Erie, Pennsylvania, United States | Extreme Fight Club |
| 21.5.2011 | | EMMA - Explosive 1 Rio Grande Convention Centre, Bradford, England, England | Explosive MMA |
| 21.5.2011 | | FCF - Extreme Fight Night 4 Extreme Performance Center, Tulsa, Oklahoma, United States | Freestyle Cage Fighting |
| 21.5.2011 | | FCFF - Rumble at the Roseland 57 The Roseland Theater, Portland, Oregon, United States | Full Contact Fighting Federation |
| 21.5.2011 |  | Gladiator - Gladiator 17 Kumamoto City Distribution and Information Hall, Kumamoto, Japan, Japan | Gladiator (Japan) |
| 21.5.2011 | | Gladiator Challenge - Warpath Shingle Springs Rancheria, Placerville, California, United States | Gladiator Challenge |
| 21.5.2011 | | H.B. Dick - Promotions Paducah, Kentucky, United States, United States | H.B. Dick Promotions |
| 21.5.2011 | | IFL - Beatdown 1 Dow Event Center, Saginaw, Michigan, United States | Impact Fight League |
| 21.5.2011 | | Impact Fighting Championship - Challenger Series Raymond Recreation Center, Williston, North Dakota, United States | Impact Fighting Championship (United States) |
| 21.5.2011 | | JF - Jungle Fight 28 Flamengo Rowing Club Gymnasium, Rio de Janeiro, Rio de Janeiro, Brazil | Jungle Fight |
| 21.5.2011 | | Kickdown 93 - Battle in the Northwoods Potawatomi Carter Casino and Hotel, Wabeno, Wisconsin, United States | Kick Down MMA |
| 21.5.2011 | | KK 3 - Kaged Kombat 3 Bennington Armory, Bennington, Vermont, United States | Kaged Kombat |
| 21.5.2011 |  | KSW 16 - Konfrontacja Ergo Arena, Gdansk, Pomeranian Voivodeship, Poland | KSV - Konfrontacja Sztuk Walki |
| 21.5.2011 | | LKO - London KO 4 The Light House, London, England, England | London KO |
| 21.5.2011 |  | M-1 Global - Mix Fight M-1 Orlyonok Sport Palace, Perm, Perm Krai, Russia | M-1 Global |
| 21.5.2011 | | Machine Fight 5 - Revelation Cruz Alta Municipal Gymnasium, Cruz Alta, Rio Grande do Sul, Brazil | Machine Fight Championship |
| 21.5.2011 | | MAX - MAX 7 Wesley's Nightclub, Pudsey, West Yorkshire, England | MAX MMA (UK) |
| 21.5.2011 |  | MCFS - Mayhem Cage Fighting Series 2 Caboolture Indoor Basketball Stadium, Caboolture, Queensland, Australia | Mayhem Cage Fighting Series |
| 21.5.2011 | | MMA Big Show 23 - Retribution 2 Big Show Gym & Fitness Center, Cincinnati, Ohio, United States | MMA Big Show |
| 21.5.2011 | | MMMAC - Mariliense MMA Circuit 6 Marilia Tennis Club Gymnasium, Marilia, Sao Paulo, Brazil | Mariliense Mixed Martial Arts Circuit |
| 21.5.2011 | | NAAFS - Spohn vs. Hawk 2 The Arena, Streetsboro, Ohio, United States | North American Allied Fight Series |
| 21.5.2011 |  | NoC - Night of Champions Palaporada, Seregno, Lombardy, Italy | Night of Champions (Italy) |
| 21.5.2011 | | PCF - New Blood Rising Magnolia Events Center, Magnolia, Iowa, United States | Premier Championship Fighting |
| 21.5.2011 |  | PFC - Selections Cabries Sport Complex, Cabries, Provence-Alpes-Côte d'Azur, France | Pancrase Fighting Championship |
| 21.5.2011 | | POTC 7 - Pride of the Cage Clarion Hotel, Springfield, Missouri, United States | Pride of the Cage |
| 21.5.2011 | | Reality Fighting - Mohegan Sun Mohegan Sun Arena, Uncasville, Connecticut, United States | Reality Fighting |
| 21.5.2011 | | RITC - Rage in the Cage 152 Wild Horse Pass Casino, Chandler, Arizona, United States | Rage in the Cage |
| 21.5.2011 | | Rogue Fights - Best in the West National Guard Armory, Medford, Oregon, United States | Rogue Fights |
| 21.5.2011 | | Savage Entertainment - A Call to Arms Neisen Brothers Sports Bar, Savage, Minnesota, United States | Savage Entertainment |
| 21.5.2011 | | SCC - Superior Cage Combat 1 Bally's Event Center, Las Vegas, Nevada, United States | Superior Cage Combat |
| 21.5.2011 | | TAFL - Uprising Maude Cobb Center, Longview, Texas, United States | Texas Amateur Fight League |
| 21.5.2011 | | TE - Torneio Estimulo Thai Boxe Academy, Curitiba, Parana, Brazil | Torneio Estimulo |
| 21.5.2011 | | TFC - Texas Fighting Championship Longview, Texas, United States, United States | Texas Fighting Championship |
| 21.5.2011 | | UCF 17 - Unleashed Quest Arena, Boise, Idaho, United States | Ultimate Cage Fighting |
| 21.5.2011 | | UVC 15 - Vengeance Ohio Expo Center, Columbus, Ohio, United States | Ultimate Victory Challenge |
| 21.5.2011 | | Warfare 1 - ISKA State Championship Grand Prix Myrtle Beach Convention Center, Myrtle Beach, South Carolina, United States | Warfare Fighting Championships |
| 21.5.2011 | | XFL - Battle at Buffalo Run Buffalo Run Casino, Miami, Oklahoma, United States | Xtreme Fighting League (Oklahoma) |