The year 2004 is the sixth year in the history of King of the Cage, a mixed martial arts promotion based in the United States. In 2004 King of the Cage held 14 events, KOTC 32: Bringing Heat.
KOTC 32: Bringing Heat was an event held on January 24, 2004 in Miami, Florida, United States.
KOTC 33: After Shock was an event held on February 20, 2004 at the Soboba Casino in San Jacinto, California, United States.
KOTC 34: Ohio was an event held on February 28, 2004 at the Canton Memorial Civic Center in Canton, Ohio, United States.
KOTC 35: Acoma was an event held on February 28, 2004 at the Sky City Casino in Acoma, New Mexico, United States.
KOTC 36: Albuquerque was an event held on May 15, 2004 at the Sky City Casino in Albuquerque, New Mexico, United States.
KOTC 37: Unfinished Business was an event held on June 12, 2004 at the Soboba Casino in San Jacinto, California, United States.
KOTC 39: Hitmaster was an event held on August 6, 2004 at the Soboba Casino in San Jacinto, California, United States.
KOTC: New Mexico was an event held on August 28, 2004 at the Sky City Casino in Albuquerque, New Mexico, United States.
KOTC 41: Relentless was an event held on September 29, 2004 at the Soboba Casino in San Jacinto, California, United States.
KOTC 42: Buckeye Nuts was an event held on October 23, 2004 at the Hara Arena in Dayton, Ohio, United States.
KOTC: Sunland Park was an event held on October 29, 2004 at the Sunland Park Racetrack & Casino in Sunland Park, New Mexico, United States.
KOTC 44: Revenge was an event held on November 14, 2004 at the Soboba Casino in San Jacinto, California, United States.
KOTC 45: King of the Cage 45 was an event held on November 20, 2004 at the Belterra Casino Resort & Spa in Belterra, Indiana, United States.
KOTC: Hostile Takeover was an event held on December 4, 2004 at the Sky City Casino in Acoma, New Mexico, United States.