2000 World Junior Championships in Athletics – Men's 4 × 400 metres relay

The men's 4x400 metres relay event at the 2000 World Junior Championships in Athletics was held in Santiago, Chile, at Estadio Nacional Julio Martínez Prádanos on 21 and 22 October.

Final
22 October

Heats
21 October

Participation
According to an unofficial count, 50 athletes from 11 countries participated in the event. • 🇦🇺 australia (5)

• undefined (4)

• 🇩🇪 germany (6)

• 🇯🇲 jamaica (5)

• 🇯🇵 japan (4)

• 🇰🇪 kenya (4)

• 🇵🇱 poland (5)

• undefined (5)

• 🇪🇸 spain (4)

• undefined (4)

• 🇻🇪 venezuela (4)