Athletics at the 2007 All-Africa Games – Women's 400 metres

The women's 400 metres at the 2007 All-Africa Games were held on July 18–20.

Qualification: First 3 of each heat (Q) and the next 4 fastest (q) qualified for the semifinals.

Qualification: First 3 of each semifinal (Q) and the next 2 fastest (q) qualified for the final.