The qualification for 2004 Men's Olympic Volleyball Tournament was held from 7 September 2003 to 30 May 2004.
FIVB reserved a vacancy for the 2004 Summer Olympics host country to participate in the tournament.
The 2004 Asian Olympic Qualification Tournament combined with 2004 2nd World Olympic Qualification Tournament.
The top ranked among the five teams except the 2004 2nd World Olympic Qualification Tournament winners qualified for the 2004 Summer Olympics as the 2004 Asian Olympic Qualification Tournament winners.
* The top four teams from 2003 Asian Championship were predetermined to be in 2nd tournament in Japan.