These are the official results of the Women's 400 metres event at the 2003 IAAF World Championships in Paris, France. There were a total number of 37 participating athletes, with five qualifying heats, three semi-finals and the final held on Wednesday 27 August 2003 at 21:50h.

Final RANKFINALTIME48.89 49.4349.954.49.985.50.386.50.597.51.078.51.30

Semi-final Held on Monday 25 August 2003 RANKHEAT 1TIME1.50.782.50.843.51.064.51.325.51.386.51.397.51.898.51.95

RANKHEAT 2TIME1.50.432.50.453.50.964.51.315.51.686.51.897.52.278.53.19

RANKHEAT 3TIME1.50.682.50.923.51.194.51.465.51.806.51.857.52.258.52.74

Heats Held on Sunday 24 August 2003 RANKHEAT 1TIME1.51.142.51.393.51.474.51.655.52.066.52.50 (NR)7.53.31

RANKHEAT 2TIME1.51.092.51.723.51.864.51.915.52.06 (NR)6.52.177.1:00.04

RANKHEAT 3TIME1.51.242.51.323.51.534.51.975.52.336.52.417.58.028.1:00.75

RANKHEAT 4TIME1.50.902.51.003.51.674.52.015.52.216.52.357.54.32

RANKHEAT 5TIME1.50.862.51.003.51.364.51.625.52.186.52.307.56.848.1:01.74

References