1990 World Junior Championships in Athletics – Men's decathlon

The men's decathlon event at the 1990 World Junior Championships in Athletics was held in Plovdiv, Bulgaria, at Deveti Septemvri Stadium on 8 and 9 August. Senior implements (106.7 cm (3'6) hurdles, 7257g shot, 2 kg discus) were used.

Final
8/9 August {{legend|#F2F5A9|The highest mark recorded in each event is highlighted in yellow|border=solid 1px #AAAAAA}}

Participation
According to an unofficial count, 25 athletes from 17 countries participated in the event. • 🇧🇬 bulgaria (2)

• undefined (1)

• undefined (2)

• 🇫🇮 finland (1)

• 🇫🇷 france (1)

• 🇭🇺 hungary (1)

• 🇯🇵 japan (1)

• undefined (1)

• 🇵🇱 poland (1)

• undefined (1)

• undefined (2)

• 🇪🇸 spain (2)

• 🇸🇪 sweden (2)

• undefined (1)

• undefined (2)

• 🇺🇸 united states (2)

• undefined (2)