Athletics at the 2002 Commonwealth Games – Women's 400 metres

The women's 400 metres event at the 2002 Commonwealth Games was held on 26–28 July.

Qualification: First 4 of each heat (Q) and the next 4 fastest (q) qualified for the quarterfinals.

Qualification: First 4 of each heat (Q) and the next 4 fastest qualified for the semifinals.

Qualification: First 4 of each heat qualified directly (Q) for the final.