2011 Asian Athletics Championships – Women's 400 metres
The women's 400 metres at the 2011 Asian Athletics Championships was held at the Kobe Universiade Memorial Stadium on 7 and 8 July.
The original gold and silver medallists, Kazakhstan's Olga Tereshkova and Iraq's Gulustan Ieso, were later disqualified after testing positive for testosterone and methylhexaneamine, respectively. Initial bronze medallist Chen Jingwen of China was elevated to the gold medal position, while fourth and fifth placed runners Chandrika Subashini and Chisato Tanaka moved into the minor medal positions.Medalists
Records
Schedule
Results
Round 1
First 3 in each heat and 2 best performers advance to the finals.
| Rank | Heat | Name | Nationality | Time | Notes |
| 1 | 2 | Chandrika Subashini | | 54.05 | Q |
| 2 | 1 | Chen Jingwen | | 54.06 | Q |
| 3 | 1 | Chisato Tanaka | | 54.16 | Q |
| 4 | 1 | Miho Shingu | | 54.36 | Q |
| 5 | 2 | Sayaka Aoki | | 54.46 | q |
| 6 | 1 | Alaa Al-Qaysi | | 54.68 | q |
| 7 | 2 | Yujin Woo | | 55.78 | |
| 8 | 1 | Leong Ka Man | | | |
| 2 | Olga Tereshkova | | 53.53 | Q, DQ |
| 2 | Gulustan Ieso | | 53.81 | Q, DQ |
| 1 | Marina Maslyonko | | | |
Final
| Rank | Lane | Name | Nationality | Time | Notes |
| 7 | Chen Jingwen | | 52.89 | |
| 9 | Chandrika Subashini | | 53.35 | |
| 4 | Chisato Tanaka | | 54.08 | |
| 4 | 2 | Sayaka Aoki | | 54.15 | |
| 5 | 8 | Miho Shingu | | 54.28 | |
| 6 | 3 | Alaa Al-Qaysi | | 54.85 | |
| 5 | Olga Tereshkova | | 52.37 | DQ |
| 6 | Gulustan Ieso | | 52.80 | DQ |
