K-1 PREMIUM 2003 Dynamite!! was an annual kickboxing and mixed martial arts event held by K-1 on New Year's Eve, Wednesday, December 31, 2003 at the Nagoya Dome in Nagoya, Japan. It featured 6 K-1 MMA rules fights, and 4 K-1 rules fights. The event attracted a sellout crowd of 43,560 to the Nagoya Dome.