The women's 400 metres event at the 2005 Asian Athletics Championships was held in Incheon, South Korea on September 1–3.
Medalists
| Gold | Silver | Bronze |
Manjeet Kaur India
|
Sathi Geetha India
|
Asami Tanno Japan
|
Results
Heats
| Rank | Heat | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
| 1 | 2 | Satti Geetha | India |
52.83 | Q |
| 2 | 1 | Tatyana Khadjimuratova |  Kazakhstan |
53.00 | Q |
| 3 | 1 | Manjeet Kaur | India |
53.12 | Q |
| 4 | 2 | Olga Tereshkova | Kazakhstan |
53.20 | Q |
| 5 | 1 | Asami Tanno | Japan |
53.44 | Q |
| 6 | 2 | Menike Wickramasinghe |  Sri Lanka |
54.05 | Q |
| 7 | 2 | Zhong Shaoting |  China |
54.42 | q |
| 8 | 1 | Xie Qing | China |
54.78 | q |
| 9 | 2 | Mayu Sato | Japan |
55.30 | |
| 10 | 1 | Mary Grace Melgar |  Philippines |
55.48 | |
| 11 | 2 | Choi Ju-Young |  South Korea |
59.20 | |
| 12 | 1 | Park Jong-Kyung | South Korea |
1:00.41 | |
| 13 | 2 | Batgereliin Möngöntuyaa |  Mongolia |
1:00.81 |
Final
| Rank | Name | Nationality | Time | Notes |
|---|---|---|---|---|
 |
Manjeet Kaur | India |
51.50 | SB |
 |
Satti Geetha | India |
51.75 | PB |
 |
Asami Tanno | Japan |
52.91 | |
| 4 | Tatyana Khadjimuratova | Kazakhstan |
52.96 | |
| 5 | Olga Tereshkova | Kazakhstan |
52.99 | SB |
| 6 | Menike Wickramasinghe | Sri Lanka |
53.80 | |
| 7 | Zhong Shaoting | China |
54.21 | |
| 8 | Xie Qing | China |
55.11 |