2001 IAAF World Indoor Championships – Women's 400 metres
The women's 400 metres event  at the 2001 IAAF World Indoor Championships was held on March 9–11. Medalists

Results

Heats
First 2 of each heat (Q) and the next 4 fastest (q) qualified for the semifinals. Semifinals
First 3 of each semifinal (Q) qualified directly for the final. Final

References
Results

400
400 metres at the World Athletics Indoor Championships
2001 in women's athletics