1986 World Junior Championships in Athletics – Men's 400 metres hurdles

The men's 400 metres hurdles event at the 1986 World Junior Championships in Athletics was held in Athens, Greece, at Olympic Stadium on 16, 17 and 18 July.

Final
18 July

Semifinals
17 July

Heats
16 July

Participation
According to an unofficial count, 37 athletes from 28 countries participated in the event. • 🇦🇺 australia (2)

• 🇦🇹 austria (1)

• 🇧🇭 bahrain (1)

• undefined (1)

• 🇧🇪 belgium (1)

• 🇧🇴 bolivia (1)

• 🇧🇬 bulgaria (1)

• 🇨🇦 canada (2)

• 🇨🇺 cuba (1)

• 🇫🇷 france (2)

• 🇬🇭 ghana (1)

• undefined (2)

• 🇭🇺 hungary (1)

• 🇮🇱 israel (1)

• 🇮🇹 italy (2)

• 🇯🇵 japan (2)

• 🇰🇪 kenya (1)

• 🇲🇽 mexico (1)

• undefined (1)

• 🇵🇱 poland (1)

• undefined (1)

• 🇷🇴 romania (1)

• undefined (1)

• undefined (2)

• undefined (1)

• 🇺🇸 united states (2)

• 🇻🇪 venezuela (1)

• undefined (2)