K-1 World Grand Prix 2004 Final was a kickboxing event promoted by the K-1 organization. It was the twelfth K-1 World Grand Prix final, involving twelve of the world's best K-1 fighters (four being reservists) from eight countries, with all bouts fought under K-1 Rules (100 kg/156-220 lbs). The tournament qualifiers had almost all qualified via the K-1 World Grand Prix 2004 Final Elimination with the exception of Remy Bonjasky who was the reigning champion.
| Actor | Role |
|---|---|
 Alexey IgnashovSelf | Self |
| KKaoklai KannorasingSelf | Self |
 Gary GoodridgeSelf | Self |
| SSiala-Mou SiligaMighty Mo | Mighty Mo |
 Ray SefoSelf | Self |
| HHiromi AmadaSelf | Self |
| MMusashiSelf | Self |
| CCyril AbidiSelf | Self |
 Peter AertsSelf | Self |
 Michael McDonaldSelf | Self |
 Jérôme Le BannerSelf | Self |
| FFrancois BothaSelf | Self |
| EErnesto HoostSelf | Self |
| GGlaube FeitosaSelf | Self |