Back بطولة العالم للناشئين لألعاب القوى 2004 Arabic Mistrovství světa juniorů v atletice 2004 Czech Leichtathletik-Juniorenweltmeisterschaften 2004 German Yleisurheilun alle 20-vuotiaiden maailmanmestaruuskilpailut 2004 Finnish Championnats du monde juniors d'athlétisme 2004 French 2004-es junior atlétikai világbajnokság Hungarian Campionati del mondo juniores di atletica leggera 2004 Italian 2004年世界ジュニア陸上競技選手権大会 Japanese Junior-VM i friidrett 2004 NB Mistrzostwa Świata Juniorów w Lekkoatletyce 2004 Polish
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| Host city |  Grosseto, Italy |
|---|---|
| Nations | 168 |
| Athletes | 1261 |
| Events | 44 |
| Dates | 12–18 July |
| Main venue | Stadio Olimpico Carlo Zecchini |
The 2004 World Junior Championships in Athletics were held in Grosseto, Italy on 12–18 July.
