2004 World Junior Championships in Athletics – Men's decathlon

The men's decathlon event at the 2004 World Junior Championships in Athletics was held in Grosseto, Italy, at Stadio Olimpico Carlo Zecchini on 14 and 15 July. Junior implements (valid until 2005) were used, i.e. 106.7 cm (3'6) (senior implement) hurdles, as well as 6 kg shot and 1.75 kg discus.

Final
14/15 July {{legend|#F2F5A9|The highest mark recorded in each event is highlighted in yellow|border=solid 1px #AAAAAA}}

Participation
According to an unofficial count, 24 athletes from 16 countries participated in the event. • 🇧🇾 belarus (2)

• 🇨🇿 czech republic (1)

• 🇪🇪 estonia (2)

• 🇫🇮 finland (2)

• 🇩🇪 germany (2)

• 🇮🇹 italy (1)

• 🇯🇵 japan (1)

• undefined (1)

• undefined (2)

• 🇳🇿 new zealand (1)

• 🇷🇺 russia (1)

• 🇸🇪 sweden (1)

• undefined (2)

• 🇺🇦 ukraine (2)

• 🇺🇸 united states (2)

• undefined (1)