The 2004 IAAF World Outdoor Meetings was the second edition of the annual global series of one-day track and field competitions organized by the International Association of Athletics Federations (IAAF). The series had four levels: 2004 IAAF Golden League, IAAF Super Grand Prix, IAAF Grand Prix and IAAF Grand Prix II. There were 6 Golden League meetings, 8 Super Grand Prix category meetings, 9 IAAF Grand Prix category meetings and 11 Grand Prix II meetings, making a combined total of 34 meetings for the series.