# 2003 World Championships in Athletics – Women's 400 metres

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

| 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

* 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

Held 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 |