1992 World Junior Championships in Athletics – Men's 400 metres

The men's 400 metres event at the 1992 World Junior Championships in Athletics was held in Seoul, Korea, at Olympic Stadium on 16, 17 and 18 September.

Final
18 September

Semifinals
17 September

Heats
16 September

Participation
According to an unofficial count, 35 athletes from 24 countries participated in the event. • 🇦🇺 australia (2)

• 🇧🇷 brazil (2)

• 🇧🇮 burundi (1)

• 🇨🇦 canada (2)

• undefined (1)

• 🇪🇹 ethiopia (1)

• 🇩🇪 germany (2)

• undefined (1)

• 🇮🇹 italy (1)

• 🇯🇲 jamaica (2)

• 🇯🇵 japan (2)

• 🇰🇪 kenya (2)

• 🇲🇽 mexico (1)

• 🇳🇿 new zealand (2)

• undefined (2)

• 🇵🇱 poland (1)

• 🇶🇦 qatar (1)

• undefined (1)

• 🇸🇱 sierra leone (1)

• 🇰🇷 south korea (1)

• 🇸🇪 sweden (1)

• 🇺🇬 uganda (1)

• undefined (2)

• 🇺🇸 united states (2)