1990 World Junior Championships in Athletics – Women's 400 metres

The women's 400 metres event at the 1990 World Junior Championships in Athletics was held in Plovdiv, Bulgaria, at Deveti Septemvri Stadium on 8, 9 and 10 August.

Final
10 August

Semifinals
9 August

Heats
8 August

Participation
According to an unofficial count, 25 athletes from 17 countries participated in the event. • 🇦🇺 australia (2)

• 🇧🇬 bulgaria (1)

• 🇨🇦 canada (2)

• 🇨🇫 central african republic (1)

• 🇨🇴 colombia (1)

• 🇨🇺 cuba (2)

• undefined (2)

• 🇫🇷 france (1)

• undefined (1)

• 🇯🇲 jamaica (2)

• undefined (1)

• undefined (2)

• 🇸🇱 sierra leone (1)

• undefined (2)

• 🇪🇸 spain (1)

• 🇺🇸 united states (2)

• undefined (1)