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
edit| RANK | FINAL | TIME |
|---|---|---|
|
 Ana Guevara (MEX)
|
48.89 |
|
 Lorraine Fenton (JAM)
|
49.43 |
|
 Amy Mbacké Thiam (SEN)
|
49.95 |
| 4. |  Natalya Nazarova (RUS)
|
49.98 |
| 5. |  Tonique Williams-Darling (BAH)
|
50.38 |
| 6. | Olesya Zykina (RUS)
|
50.59 |
| 7. |  Lee McConnell (GBR)
|
51.07 |
| 8. | Svetlana Pospelova (RUS)
|
51.30 |
Semi-final
edit- Held on Monday 25 August 2003
| RANK | HEAT 1 | TIME |
|---|---|---|
| 1. | Amy Mbacké Thiam (SEN)
|
50.78 |
| 2. | Svetlana Pospelova (RUS)
|
50.84 |
| 3. | Lee McConnell (GBR)
|
51.06 |
| 4. |  Sanya Richards (USA)
|
51.32 |
| 5. |  Olabisi Afolabi (NGR)
|
51.38 |
| 6. | Ronetta Smith (JAM)
|
51.39 |
| 7. |  Heide Seyerling (RSA)
|
51.89 |
| 8. |  Hazel-Ann Regis (GRN)
|
51.95 |
| RANK | HEAT 2 | TIME |
|---|---|---|
| 1. | Tonique Williams-Darling (BAH)
|
50.43 |
| 2. | Lorraine Fenton (JAM)
|
50.45 |
| 3. | Olesya Zykina (RUS)
|
50.96 |
| 4. | Demetria Washington (USA)
|
51.31 |
| 5. | DeeDee Trotter (USA)
|
51.68 |
| 6. |  Grażyna Prokopek (POL)
|
51.89 |
| 7. |  Makelesi Batimala (FIJ)
|
52.27 |
| 8. |  Antonina Yefremova (UKR)
|
53.19 |
| RANK | HEAT 3 | TIME |
|---|---|---|
| 1. | Ana Guevara (MEX)
|
50.68 |
| 2. | Natalya Nazarova (RUS)
|
50.92 |
| 3. |  Mireille Nguimgo (CMR)
|
51.19 |
| 4. |  Sviatlana Usovich (BLR)
|
51.46 |
| 5. | Sandie Richards (JAM)
|
51.80 |
| 6. | Christine Amertil (BAH)
|
51.85 |
| 7. |  Anna Tkach (ISR)
|
52.25 |
| 8. |  Karen Shinkins (IRL)
|
52.74 |
Heats
editHeld on Sunday 24 August 2003
| RANK | HEAT 1 | TIME |
|---|---|---|
| 1. | Ana Guevara (MEX)
|
51.14 |
| 2. | Sviatlana Usovich (BLR)
|
51.39 |
| 3. | Olabisi Afolabi (NGR)
|
51.47 |
| 4. | Mireille Nguimgo (CMR)
|
51.65 |
| 5. | Karen Shinkins (IRL)
|
52.06 |
| 6. |  Sandrine Thiébaud-Kangni (TOG)
|
52.50 (NR) |
| 7. |  Geisa Aparecida Coutinho (BRA)
|
53.31 |
| RANK | HEAT 2 | TIME |
|---|---|---|
| 1. | Natalya Nazarova (RUS)
|
51.09 |
| 2. | Christine Amertil (BAH)
|
51.72 |
| 3. | Sandie Richards (JAM)
|
51.86 |
| 4. | Antonina Yefremova (UKR)
|
51.91 |
| 5. | Anna Tkach (ISR)
|
52.06 (NR) |
| 6. | DeeDee Trotter (USA)
|
52.17 |
| 7. |  Irisca Kithouka (CGO)
|
1:00.04 |
| RANK | HEAT 3 | TIME |
|---|---|---|
| 1. | Tonique Williams-Darling (BAH)
|
51.24 |
| 2. | Olesya Zykina (RUS)
|
51.32 |
| 3. | Demetria Washington (USA)
|
51.53 |
| 4. | Hazel-Ann Regis (GRN)
|
51.97 |
| 5. |  Hrisoula Goudenoudi (GRE)
|
52.33 |
| 6. |  Solen Désert-Mariller (FRA)
|
52.41 |
| 7. |  Aida Torosyan (ARM)
|
58.02 |
| 8. |  Wai Kuan Hoi (MAC)
|
1:00.75 |
| RANK | HEAT 4 | TIME |
|---|---|---|
| 1. | Lorraine Fenton (JAM)
|
50.90 |
| 2. | Svetlana Pospelova (RUS)
|
51.00 |
| 3. | Lee McConnell (GBR)
|
51.67 |
| 4. | Makelesi Batimala (FIJ)
|
52.01 |
| 5. |  Aliann Pompey (GUY)
|
52.21 |
| 6. | Fatou Bintou Fall (SEN)
|
52.35 |
| 7. |  Eliana Pacheco (VEN)
|
54.32 |
| RANK | HEAT 5 | TIME |
|---|---|---|
| 1. | Amy Mbacké Thiam (SEN)
|
50.86 |
| 2. | Sanya Richards (USA)
|
51.00 |
| 3. | Grażyna Prokopek (POL)
|
51.36 |
| 4. | Ronetta Smith (JAM)
|
51.62 |
| 5. | Heide Seyerling (RSA)
|
52.18 |
| 6. |  Claudia Marx (GER)
|
52.30 |
| 7. |  Lilian Bwalya (ZAM)
|
56.84 |
| 8. |  Shifana Ali (MDV)
|
1:01.74 |