| Datum | Země | Název, adresa | Pořadatel |
|---|---|---|---|
| 1.4.2006 |  | DB 17 - DesertBrawl 17 Bend, Oregon, United States | DesertBrawl |
| 1.4.2006 |  | EFC 1 - Last Man Standing Mexicali, Mexico, Mexico | Extreme Full Contact |
| 1.4.2006 |  | FA 4 - Fight Arena Albertslund Music Theater, Copenhagen, Denmark, Denmark | Fight Arena (Denmark) |
| 1.4.2006 | | FCFF - Rumble at the Roseland 21 Roseland Theater, Portland, Oregon, United States | Full Contact Fighting Federation |
| 1.4.2006 |  | GCM - D.O.G. 5 Differ Ariake, Koto, Tokyo, Japan | Greatest Common Multiple |
| 1.4.2006 |  | GFF 1 - Gladiators Free Fight 1 Prague, Czech Republic, Czech Republic | Gladiators Free Fight |
| 1.4.2006 | | ICB - International Cage Brawl Bell Bottoms Nightclub, Birmingham, Alabama, United States | International Cage Brawl |
| 1.4.2006 |  | IE 4 - Italia Extreme 4 Modena, Italy, Italy | Italia Extreme |
| 1.4.2006 |  | IF 3 - Intense Fighting 3 England, England | Intense Fighting |
| 1.4.2006 | IFBL - Fight Night 2 | International Fighting & Boxing League | |
| 1.4.2006 | | IFC - Caged Combat ARCO Arena, Sacramento, CA, United States | International Fighting Championship |
| 1.4.2006 | | KF - Kombat Festival 2006 Genova, Italy, Italy | Kombat Festival |
| 1.4.2006 | | KO - Productions East Grand Forks, Minnesota, United States | KO Productions |
| 1.4.2006 | | MMA - Cage Fights Quincy, Illinois, United States | MMA Cage Fights |
| 1.4.2006 | | MR - Modern Ringsport Sherwood, Arkansas, United States, United States | Modern Ringsport |
| 1.4.2006 |  | MWP - Promotions Perth, Australia, Australia | MWP Promotions |
| 1.4.2006 | | NLF 3 - Next Level Fighting 3 St. John Arena, Steubenville, Ohio, United States | Next Level Fighting |
| 1.4.2006 | | ROF 23 - Impact Douglas County Events Center, Castle Rock, Colorado, United States | Ring of Fire |
| 1.4.2006 | | UCE - Round 20 - Episode 5 The StationSandy, Utah, United States | Ultimate Combat Experience |
| 1.4.2006 | | Ultimate Promotions - Total Termination Gold Coast, Australia, Australia | Ultimate Promotions (Australia) |
| 1.4.2006 | | Warrior MMA 23 - The Rematch National Guard ArmoryHarlan, Kentucky, United States | Warrior Fighting Championship (Kentucky) |
| 1.4.2006 | | WEF 17 - World Extreme Fighting 17 Orleans Arena, Las Vegas, Nevada, United States | World Extreme Fighting |
| 1.4.2006 | | WFL 6 - Real: No Fooling Around Club Lido, Revere, Massachusetts, United States | World Fighting League (United States) |
| 1.4.2006 | | WMMA - Wyobraska MMA Pioneer Park, Torrington, Wyoming, United States | Wyobraska |