# 2001 World Championships in Athletics – Women's 400 metres

These are the official results of the Women's 400 metres event at the 2001 IAAF World Championships in Edmonton, Canada.

## Medalists

| Gold | Amy Mbacké Thiam Senegal (SEN) |
| Silver | Lorraine Fenton Jamaica (JAM) |
| Bronze | Ana Guevara Mexico (MEX) |

## Results
### Heats

Qualification: First 3 in each semifinal (Q) and the next 6 fastest (q) advance to the semifinals.
| Rank | Heat | Name | Nationality | Time | Notes |
| 1 | 5 | Grit Breuer | Germany | 50.71 | Q |
| 2 | 4 | Ana Guevara | Mexico | 50.99 | Q |
| 2 | 6 | Amy Mbacké Thiam | Senegal | 50.99 | Q |
| 4 | 6 | Mireille Nguimgo | Cameroon | 51.09 | Q, SB |
| 5 | 4 | Anastasiya Kapachinskaya | Russia | 51.12 | Q |
| 5 | 5 | Monique Hennagan | United States | 51.12 | Q, SB |
| 7 | 1 | Kaltouma Nadjina | Chad | 51.24 | Q |
| 8 | 2 | Michelle Collins | United States | 51.26 | Q |
| 9 | 5 | Karen Shinkins | Ireland | 51.37 | Q, SB |
| 10 | 1 | Demetria Washington | United States | 51.50 | Q |
| 11 | 3 | Olesya Zykina | Russia | 51.56 | Q |
| 12 | 1 | Sandie Richards | Jamaica | 51.71 | Q |
| 13 | 4 | Florence Ekpo-Umoh | Germany | 51.77 | Q |
| 14 | 1 | Natallia Solohub | Belarus | 51.78 | q |
| 14 | 6 | Heide Seyerling | South Africa | 51.78 | Q |
| 16 | 3 | Falilat Ogunkoya | Nigeria | 51.79 | Q |
| 17 | 2 | Lorraine Fenton | Jamaica | 51.80 | Q |
| 18 | 4 | Grażyna Prokopek | Poland | 51.92 | q, PB |
| 19 | 5 | Donna Fraser | Great Britain | 52.02 | q, SB |
| 20 | 2 | Claudia Marx | Germany | 52.03 | Q |
| 21 | 4 | K. Mathews Beenamol | India | 52.17 | q, SB |
| 22 | 5 | Aliann Pompey | Guyana | 52.20 | q |
| 23 | 6 | K.V.Damayanthi Dharsha | Sri Lanka | 52.21 | q |
| 24 | 2 | Otilia Ruicu | Romania | 52.33 | |
| 25 | 1 | Anna Kozak | Belarus | 52.35 | Q |
| 26 | 6 | LaDonna Antoine | Canada | 52.38 | |
| 27 | 3 | Catherine Murphy | Great Britain | 52.40 | |
| 28 | 3 | Francine Landre | France | 52.57 | |
| 28 | 5 | Jane Arnott | New Zealand | 52.57 | SB |
| 30 | 5 | Natalya Antyukh | Russia | 52.71 | |
| 31 | 2 | Foy Williams | Canada | 52.92 | |
| 32 | 1 | Zana Minina | Lithuania | 52.98 | |
| 33 | 3 | Christine Amertil | Bahamas | 53.07 | |
| 34 | 6 | Allison Beckford | Jamaica | 53.08 | |
| 35 | 6 | Jitka Burianova | Czech Republic | 53.29 | |
| 36 | 4 | Nova Peris | Australia | 53.55 | |
| 37 | 2 | Carmo Tavares | Portugal | 54.08 | |
| 38 | 3 | Julia Alba | Spain | 54.73 | |
| 39 | 4 | Tsvetelina Kirilova | Bulgaria | 54.82 | |
| 40 | 1 | Gretta Taslakian | Lebanon | 57.06 | PB |
| 41 | 3 | Mereoni Raluve | Fiji | 58.03 | |
| 42 | 2 | Gladys Mateyo | Zambia | 59.30 | |
| | 1 | Alena Petrova | Turkmenistan | DQ | |
| | 2 | Verica Dimitrovska | Macedonia | DQ | |
| | 6 | Klodiana Shala | Albania | DQ | |
| | 1 | Sandrine Kangni | Togo | DNS | |
| | 4 | Odonsuren Oyuntuya | Mongolia | DNS | |

### Semifinals

Qualification: First 2 in each semifinal (Q) and the next 2 fastest (q) advance to the final.
| Rank | Heat | Name | Nationality | Time | Notes |
| 1 | 2 | Amy Mbacké Thiam | Senegal | 50.21 | Q, NR |
| 2 | 1 | Grit Breuer | Germany | 50.32 | Q |
| 3 | 2 | Kaltouma Nadjina | Chad | 50.38 | Q, NR |
| 4 | 2 | Falilat Ogunkoya | Nigeria | 50.50 | q, SB |
| 5 | 3 | Ana Guevara | Mexico | 50.58 | Q |
| 6 | 1 | Olesya Zykina | Russia | 50.59 | Q |
| 7 | 3 | Lorraine Fenton | Jamaica | 50.61 | Q, SB |
| 8 | 1 | Mireille Nguimgo | Cameroon | 50.71 | q, SB |
| 9 | 2 | Heide Seyerling | South Africa | 50.87 | |
| 10 | 2 | Monique Hennagan | United States | 50.98 | SB |
| 11 | 3 | Michelle Collins | United States | 51.22 | |
| 12 | 1 | Demetria Washington | United States | 51.26 | PB |
| 13 | 2 | Sandie Richards | Jamaica | 51.40 | |
| 14 | 3 | Florence Ekpo-Umoh | Germany | 51.47 | |
| 15 | 1 | Karen Shinkins | Ireland | 51.66 | |
| 16 | 3 | Anastasiya Kapachinskaya | Russia | 51.68 | |
| 17 | 2 | Claudia Marx | Germany | 51.75 | |
| 18 | 3 | Donna Fraser | Great Britain | 51.77 | SB |
| 19 | 1 | K.V.Damayanthi Dharsha | Sri Lanka | 51.83 | SB |
| 20 | 3 | Aliann Pompey | Guyana | 51.96 | PB |
| 21 | 3 | Anna Kozak | Belarus | 52.13 | |
| 22 | 1 | Grażyna Prokopek | Poland | 52.28 | |
| 23 | 2 | K. Mathews Beenamol | India | 52.68 | |
| | 2 | Natallia Solohub | Belarus | DQ | |

### Final

| Rank | Lane | Name | Nationality | Time | Notes |
| | 4 | Amy Mbacké Thiam | Senegal | 49.86 | NR |
| | 7 | Lorraine Fenton | Jamaica | 49.88 | SB |
| | 3 | Ana Guevara | Mexico | 49.97 | SB |
| 4 | 5 | Grit Breuer | Germany | 50.49 | |
| 5 | 6 | Kaltouma Nadjina | Chad | 50.80 | |
| 6 | 2 | Olesya Zykina | Russia | 50.93 | |
| 7 | 1 | Mireille Nguimgo | Cameroon | 51.97 | |
| | 8 | Falilat Ogunkoya | Nigeria | DNF | |