| Datum | Země | Název, adresa | Pořadatel |
|---|---|---|---|
| 13.12.2003 |  | CN 8 - Champions Night 8 Fortaleza, Ceara, Brazil, Brazil | Champions Night |
| 13.12.2003 |  | FATB - Fights at the Border Lommel, Belgium, Belgium | Fights at the Border |
| 13.12.2003 |  | FCFF - Rumble at the Roseland 10 Portland, Oregon, United States | Full Contact Fighting Federation |
| 13.12.2003 |  | Fearless 2 - Bad Blood PhilSports ArenaPasig, Philippines, Philippines | Fearless |
| 13.12.2003 | | HHCF 11 - Holiday CHAOS Circleville, Ohio, United States | Hammer House Cage Fighting |
| 13.12.2003 |  | Kingdom Ehrgeiz - Tokyo University Flight Excitement Space Z-Zone Tokyo, Japan, Japan | Kingdom Ehrgeiz |
| 13.12.2003 | | MD 14 - Mass Destruction 14 Matrix Entertainment Complex, Taunton, Massachusetts, United States | Mass Destruction |
| 13.12.2003 |  | MMA Poland 3 - Finals 2003 Warsaw, Poland, Poland | MMA Poland |
| 13.12.2003 | | RITC 57 - Tucson Revisited Pima FairgroundsTucson, Arizona, United States | Rage in the Cage |
| 13.12.2003 | | SC 18 - Silverback Classic 18 Illinois Banquet HallLaSalle, Illinois, United States | Silverback Classic |
| 13.12.2003 |  | Shooto Lithuania - King of Bushido Stage 2 Kaunas Sports Hall, Kaunas, Kaunas County, Lithuania | Shooto Europe |
| 13.12.2003 |  | SMMA FC 1 - Serbian MMA Fighting Championships 1 Vrbas, Serbia, Serbia | Serbian MMA Fighting Championships |
| 13.12.2003 |  | SSF - December Bash 2003 Karen, Gothenburg, Sweden, Sweden | Swedish Shootfighting Federation |
| 13.12.2003 | | UCE - Winter Warrior Land - Episode 3 Salt Lake City, Utah, United States | Ultimate Combat Experience |