2008 IAAF World Indoor Championships – Women's 400 metres
Medalists
Heats
| Heat | Lane | Name | Country | Mark | Q | React |
| 1 | 6 | Olesya Zykina | 51.96 | Q | 0.244 | |
| 1 | 4 | Moushaumi Robinson | 52.45 | Q | 0.258 | |
| 1 | 3 | Makelesi Batimala | 54.02 PB | Q | 0.217 | |
| 1 | 1 | Nikolett Listar | 55.37 | 0.237 | ||
| 1 | 2 | Martina Xuereb | 57.62 NR | 0.282 | ||
| 1 | 5 | Moya Thompson | DNF | 0.315 | ||
| 2 | 5 | Natalya Nazarova | 52.40 | Q | 0.157 | |
| 2 | 3 | Antonina Yefremova | 52.64 | Q | 0.163 | |
| 2 | 6 | Shareese Woods | 52.65 | Q | 0.240 | |
| 2 | 4 | Zuzana Hejnová | 53.04 | q | 0.146 | |
| 2 | 1 | Racheal Nachula | 53.52 NR | q | 0.257 | |
| 2 | 2 | Vera Barbosa | 57.55 | 0.281 | ||
| 3 | 6 | Amantle Montsho | 52.96 PB | Q | 0.290 | |
| 3 | 2 | Angela Morosanu | 53.32 SB | Q | 0.249 | |
| 3 | 5 | Christy Ekpukhon Ihunaegbo | 53.34 | Q | 0.187 | |
| 3 | 3 | Nataliya Pyhyda | 53.44 | q | 0.187 | |
| 3 | 4 | Tsvetelina Kirilova | 53.66 | 0.195 | ||
| 3 | 1 | Sandrine Thiébaud-Kangni | 54.02 SB | 0.209 | - |
Semifinals
| Heat | Lane | Name | Country | Mark | Q | React |
| 1 | 5 | Olesya Zykina | 51.75 | Q | 0.315 | |
| 1 | 3 | Antonina Yefremova | 51.79 PB | Q | 0.228 | |
| 1 | 6 | Moushaumi Robinson | 51.85 PB | Q | 0.248 | |
| 1 | 1 | Racheal Nachula | 53.30 NR | 0.317 | ||
| 1 | 2 | Makelesi Batimala | 54.23 | 0.275 | ||
| 1 | 4 | Christy Ekpukhon Ihunaegbo | DNS | |||
| 2 | 6 | Natalya Nazarova | 51.62 | Q | 0.287 | |
| 2 | 3 | Shareese Woods | 51.87 PB | Q | 0.193 | |
| 2 | 4 | Angela Morosanu | 52.83 SB | Q | 0.273 | |
| 2 | 2 | Zuzana Hejnová | 53.16 | 0.142 | ||
| 2 | 5 | Amantle Montsho | 53.21 | 0.266 | ||
| 2 | 1 | Nataliya Pyhyda | 53.33 |
Final
| Heat | Lane | Name | Country | Mark | React |
| 6 | Olesya Zykina | 51.09 WL | 0.297 | ||
| 5 | Natalya Nazarova | 51.10 SB | 0.247 | ||
| 3 | Shareese Woods | 51.41 PB | 0.237 | ||
| 4 | 4 | Antonina Yefremova | 51.53 PB | 0.147 | |
| 5 | 2 | Angela Morosanu | 53.07 | 0.269 | |
| 6 | 1 | Moushaumi Robinson | 53.10 | 0.257 |