The women's 400 metres at the 2011 IPC Athletics World Championships is held at the QEII Stadium from 22–29 January
| Class | width=200 bgcolor=gold | Gold | width=200 bgcolor=silver | Silver | width=200 bgcolor=CC9966 | Bronze |
| T11 | Terezinha Guilhermina | Tracey Hinton | Adria Rocha Santos | |||
| T12 | Assia El Hannouni | Oxana Boturchuk | Xu Jiping | |||
| T13 | Omara Durand | Somaya Bousaid | Sanaa Benhama | |||
| T37 | Bethany Woodward | Maryna Snisar | Anastasiya Ovsyannikova | |||
| T46 | Yunidis Castillo | Anrune Liebenberg | Alicja Fiodorow | |||
| T52 | Michelle Stilwell | Kerry Morgan | Teruyo Tanaka | |||
| T53 | Huang Lisha | Anjali Forber Pratt | Amanda McGrory | |||
| T54 | Tatyana McFadden | Diane Roy | Manuela Schaer |