| Datum | Země | Název, adresa | Pořadatel |
|---|---|---|---|
| 20.5.2006 |  | BBB 2 - Bad Boys Battles 2 Coffeyville, Kansas, United States, United States | Bad Boys Battles |
| 20.5.2006 | | CITC - Combat in the Cage 2 Boardwalk Hall, Atlantic City, New Jersey, United States | Combat in the Cage |
| 20.5.2006 |  | Costa Rica - Fights 6 Costa Rica, Costa Rica | Costa Rica Fights |
| 20.5.2006 | | FCFF - Rumble at the Roseland 22 Roseland Theater, Portland, Oregon, United States | Full Contact Fighting Federation |
| 20.5.2006 |  | FEFoMP - World Pankration Championship 2006 Platinum Arena, Khabarovsk, Khabarovsk Krai, Russia | Modern Fighting Pankration |
| 20.5.2006 | | FF 4 - Fightfest 4 Corpus Christi, Texas, United States | Fightfest |
| 20.5.2006 | FFG - Fight For Glory | Fight for Glory | |
| 20.5.2006 | | FW 9 - Fightworld 9 Santa Fe, New Mexico, United States, United States | FightWorld MMA |
| 20.5.2006 |  | GFC 1 - Gold Fighters Championship Rio de Janeiro, Brazil, Brazil | Gold Fighters Championship |
| 20.5.2006 | | HOOKnSHOOT - Live Evansville, Indiana, United States | HOOKnSHOOT |
| 20.5.2006 | | IE - Independent Event Toledo, Ohio, United States | Independent Events |
| 20.5.2006 |  | KO Boxing - Warzone 1 Shaw Conference Centre, Edmonton, Alberta, Canada | KO Boxing |
| 20.5.2006 | | MCC 3 - Mayhem Des Moines, Iowa, United States, United States | Midwest Cage Championship |
| 20.5.2006 |  | NGT 1 - New Generation Tournament 1 Monza, Italy, Italy | New Generation Tournament |
| 20.5.2006 | | OK MMA - Oklahoma MMA Heritage Hall, Ardmore, Oklahoma, United States | Oklahoma MMA |
| 20.5.2006 | | RCFC - River City Fight Club Conesville, Iowa, United States, United States | River City Fight Club |
| 20.5.2006 |  | RF 9 - King of the Mountain 9 Toowoomba, Queensland Australia, Australia | Reality Fight |
| 20.5.2006 | | TCI - Damage Control Sioux Empire Fairgrounds, Sioux Falls, South Dakota, United States | The Cage Inc. |
| 20.5.2006 |  | The Cage Vol. 6 - Balls to the Wall Helsinki Sports Hall, Helsinki, Uusimaa, Finland | Cage MMA Finland |
| 20.5.2006 | | Titan FC 3 - Red River Rumble Durant, Oklahoma, United States | Titan Fighting Championship |
| 20.5.2006 | | UAGF - Kaos on the Kampus Los Angeles, California, United States | Universal Above Ground Fighting |
| 20.5.2006 | | UCE - Round 21 - Episode 2 The StationSandy, Utah, United States | Ultimate Combat Experience |
| 20.5.2006 |  | URCC 8 - Undisputed The Arena, San Juan City, National Capital Region, Philippines | Universal Reality Combat Championship |
| 20.5.2006 | VFC 14 - Aggression | Victory Fighting Championship | |
| 20.5.2006 |  | WFC - Europe vs. Brazil Koper, Slovenia, Slovenia | World Free Fight Challenge |
| 20.5.2006 |  | XFC - Dome of Destruction 4 Tacoma Dome, Tacoma, WA | X Fighting Championships |
| 20.5.2006 | | XFL - Battle at the Brady 4 Brady Theatre, Tulsa, Oklahoma, United States | Xtreme Fighting League (Oklahoma) |