2010 IAAF World Indoor Championships – Women's 400 metres
The women's 400 metres at the 2010 IAAF World Indoor Championships was held at the ASPIRE Dome on 12 and 13 March.Medalists
Records
Qualification standards
Schedule
Results
Heats
Qualification: First 2 in each heat and the next 4 fastest advance to the [|semifinals].
| Rank | Heat | Name | Nationality | Time | Notes |
| 1 | 1 | Debbie Dunn | | 52.24 | Q |
| 2 | 1 | Christine Amertil | | 52.50 | Q |
| 4 | Tatyana Firova | | 52.67 | Q, Doping |
| 4 | 1 | Amantle Montsho | | 52.72 | q, NR |
| 5 | 4 | Novlene Williams-Mills | | 52.73 | Q |
| 6 | 2 | Denisa Ščerbová-Rosolová | | 52.75 | Q, PB |
| 7 | 2 | DeeDee Trotter | | 52.75 | Q |
| 8 | 2 | Aliann Pompey | | 52.76 | q |
| 2 | Bobby-Gaye Wilkins | | 52.86 | Q, Doping |
| 9 | 4 | Maris Mägi | | 53.21 | q |
| 10 | 3 | Natalya Nazarova | | 53.50 | Q |
| 11 | 4 | Zuzana Hejnová | | 53.56 | |
| 12 | 3 | Vania Stambolova | | 53.57 | Q |
| 13 | 1 | Kou Luogon | | 53.69 | |
| 14 | 3 | Virginie Michanol | | 53.70 | |
| 15 | 4 | Tiandra Ponteen | | 53.89 | |
| 16 | 3 | Antonina Yefremova | | 53.97 | |
| 1 | Munira Saleh | | 54.53 | Doping |
| 17 | 3 | Tjipekapora Herunga | | 55.40 | NR |
| 18 | 3 | Kay Khine Lwin | | | NR |
| 2 | Racheal Nachula | | | |
| 2 | Klodiana Shala | | | |
Semifinals
Qualification: First 3 in each heat advance to the [|final].
| Rank | Heat | Name | Nationality | Time | Notes |
| 1 | Tatyana Firova | | 51.36 | Q, Doping |
| 2 | 1 | Novlene Williams-Mills | | 51.77 | Q, SB |
| 3 | 2 | Debbie Dunn | | 52.08 | Q |
| 4 | 1 | Aliann Pompey | | 52.29 | Q |
| 5 | 2 | Vania Stambolova | | 52.30 | Q |
| 6 | 2 | Amantle Montsho | | 52.34 | Q, NR |
| 7 | 1 | Christine Amertil | | 52.36 | SB |
| 8 | 2 | Natalya Nazarova | | 52.47 | |
| 9 | 1 | DeeDee Trotter | | 52.55 | |
| 2 | Bobby-Gaye Wilkins | | 52.59 | Doping |
| 10 | 2 | Denisa Ščerbová-Rosolová | | 52.92 | |
| 11 | 1 | Maris Mägi | | 53.30 | |
Final
