| Datum | Země | Název, adresa | Pořadatel |
|---|---|---|---|
| 12.4.2003 |  | BFN 20 - Bama Fight Night 20 South Plainfield Middle School, South Plainfield, New Jersey, United States | Bama Fight Night |
| 12.4.2003 | | Dangerzone 17 - Dakota Destruction 4 Bears Casino, New Town, North Dakota, United States | Dangerzone |
| 12.4.2003 | | ECC - Extreme Combat Challenge Boot Scootin Bingo HallLafayette, Indiana, United States | Extreme Combat Challenge |
| 12.4.2003 |  | FFAA - Gladiators 2003 Austria, Austria | Free Fight Association Austria |
| 12.4.2003 | | KC 5 - Kickdown 5 Red Lion HotelDenver, Colorado, United States | Kick Down MMA |
| 12.4.2003 | | MC 6 - Maximum Combat 6 Sneaky Pete'sFort Wayne, Indiana, United States | Maximum Combat |
| 12.4.2003 | | MEF 2 - Minnesota Extreme Fight 2 Deluth, Minnesota, United States | Minnesota Extreme Fight |
| 12.4.2003 | | MR - Modern Ringsport State House Convention CenterLittle Rock, Arkansas, United States | Modern Ringsport |
| 12.4.2003 |  | Pancrase - Hybrid 4 Korakuen Hall, Tokyo, Japan, Japan | Pancrase |
| 12.4.2003 | | PPKA - Battle in the Barnyard Cattlemen's Livestock ExchangeYelm, Washington, United States | Pacific Pankration Kickboxing Association |
| 12.4.2003 | | RITC 47 - Unstoppable Celebrity TheatrePhoenix, Arizona, United States | Rage in the Cage |
| 12.4.2003 |  | Shido - Fists of Fury 2 Germany, Germany | Shido |
| 12.4.2003 |  | Shooto Holland - Holland vs. the World Vrijstadhal | Shooto Europe |
| 12.4.2003 | | TG - The Gladiator 1 McKay Events CenterOrem, Utah, United States | The Gladiator |
| 12.4.2003 | | UCE - Round 3 - Episode 2 Salt Lake City, Utah, United States | Ultimate Combat Experience |
| 12.4.2003 |  | URCC 2 - Night of Champions PhilSports Arena, Pasig City, National Capital Region, Philippines | Universal Reality Combat Championship |
| 12.4.2003 |  | YFN - Yorkshire Fight Night Doncaster, England, England | Yorkshire Fight Night |