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The 2003 IAAF World Outdoor Meetings was the first edition of the annual global series of one-day track and field competitions organized by the International Association of Athletics Federations (IAAF). It replaced the IAAF Grand Prix as the IAAF's primary outdoor track and field series. Compared to the 2002 IAAF Grand Prix, a new tier of meetings – IAAF Super Grand Prix – was introduced and the IAAF Permit Meetings concept was dropped. The series had four levels: 2003 IAAF Golden League, Super Grand Prix, Grand Prix and Grand Prix II. There were 6 Golden League meetings, Super Grand Prix category featured 7 meetings from 12 June to 8 August, the IAAF Grand Prix category featured 10 meetings from 4 May to 7 September and Grand Prix II featured 11 meetings from 1 March to 3 August, making a combined total of 34 meetings for the series.
Performances on designated events on the circuit earned athletes points which qualified them for entry to the 2003 IAAF World Athletics Final, held on 13–14 September in Monaco. This competition replaced the IAAF Grand Prix Final, with the key difference being that the new final held a full set of track and field events, rather than the rotating partial event schedule of the Grand Prix Final. The points scoring format of previous years was replaced with a world rankings system which scored athletes on both their finishing position at qualifying meetings and also the standard of their performance based on IAAF Scoring Tables. The world rankings system formed the selection criteria for entry to the World Athletics Final rather than exclusively placings at IAAF Grand Prix meetings.