2012 IAAF World Indoor Championships – Women's 400 metres
The women's 400 metres at the 2012 IAAF World Indoor Championships will be held at the Ataköy Athletics Arena on 9 and 10 March.Medalists
Records
Qualification standards
Schedule
Results
Heats
Qualification: First 2 in each heat and the next 6 fastest advance to the [|semifinals].
| Rank | Heat | Name | Nationality | Time | Notes |
| 1 | 2 | Nataliya Pyhyda | | 52.02 | Q, SB |
| 2 | 3 | Sanya Richards-Ross | | 52.81 | Q |
| 3 | 1 | Denisa Rosolová | | 52.95 | Q |
| 4 | 1 | Vania Stambolova | | 52.97 | Q |
| 5 | 2 | Patricia Hall | | 52.99 | Q |
| 6 | 6 | Shana Cox | | 53.24 | Q |
| 7 | 4 | Aleksandra Fedoriva | | 53.26 | Q |
| 8 | 4 | Dominique Blake | | 53.39 | Q |
| 9 | 4 | Muizat Ajoke Odumosu | | 53.47 | q |
| 10 | 2 | Meliz Redif | | 53.55 | q |
| 11 | 3 | Nadine Okyere | | 53.56 | Q |
| 12 | 6 | Irina Davydova | | 53.58 | Q |
| 13 | 5 | Natasha Hastings | | 53.64 | Q |
| 14 | 1 | Maria Enrica Spacca | | 53.74 | q |
| 14 | 3 | Tiandra Ponteen | | 53.74 | q |
| 16 | 5 | Moa Hjelmer | | 54.01 | Q |
| 3 | Bimbo Miel Ayedou | | 54.44 | q, NR † |
| 17 | 5 | Aliann Pompey | | 54.63 | q |
| 18 | 6 | Ambwene Simukonda | | 55.51 | |
| 19 | 6 | Kineke Alexander | | 55.88 | |
| 20 | 2 | Amaliya Sharoyan | | 56.41 | |
| 21 | 1 | Déborah Rodríguez | | 57.08 | |
| 22 | 4 | Natacha Ngoye | | 58.21 | |
| 23 | 1 | Sharon Kwarula | | 59.56 | |
| 24 | 5 | Graciela Martins | | 59.83 | |
| 25 | 2 | Danielle Alakija | | | |
| 26 | 5 | Vladislava Ovcharenko | | | NR |
| 27 | 6 | Gaiane Ustiane | | | |
| 28 | 6 | Maziah Mahusin | | | NR |
| 29 | 2 | Amy Atkinson | | | NR |
| 3 | Geisa Aparecida Coutinho | | | |
| 4 | Munguntuya Batgerel | | | |
Semifinals
Qualification: First 2 of each heat qualified.
| Rank | Heat | Name | Nationality | Time | Notes |
| 1 | 3 | Sanya Richards-Ross | | 50.99 | Q |
| 2 | 3 | Aleksandra Fedoriva | | 51.79 | Q |
| 3 | 1 | Natasha Hastings | | 51.87 | Q |
| 4 | 1 | Vania Stambolova | | 51.87 | Q |
| 5 | 1 | Nataliya Pyhyda | | 51.98 | SB |
| 6 | 1 | Moa Hjelmer | | 52.29 | NR |
| 7 | 2 | Shana Cox | | 52.69 | Q |
| 8 | 2 | Denisa Rosolová | | 52.78 | Q |
| 9 | 2 | Dominique Blake | | 53.00 | |
| 10 | 2 | Irina Davydova | | 53.02 | |
| 11 | 3 | Patricia Hall | | 53.21 | |
| 12 | 3 | Nadine Okyere | | 53.66 | |
| 13 | 2 | Maria Enrica Spacca | | 53.71 | |
| 14 | 1 | Muizat Ajoke Odumosu | | 54.06 | |
| 3 | Bimbo Miel Ayedou | | 54.26 | NR''', † |
| 15 | 3 | Meliz Redif | | 54.48 | |
| 1 | Aliann Pompey | | | |
| 2 | Tiandra Ponteen | | | |
- † = Bimbo Miel Ayedou's sample later tested positive for banned substances and she was disqualified.
Final
| Rank | Name | Nationality | Time | Notes |
| Sanya Richards-Ross | | 50.79 | |
| Aleksandra Fedoriva | | 51.76 | |
| Natasha Hastings | | 51.82 | |
| 4 | Vania Stambolova | | 51.99 | |
| 5 | Shana Cox | | 52.13 | PB |
| 6 | Denisa Rosolová | | 52.48 | |
