The women's 400 metres event at the 2023 Asian Athletics Championships was held on 12 and 13 July.
[1] In April 2024, it was revealed that silver medallist Fairda Soliyeva of Uzbekistan failed a test for meldonium, disqualifying her from the competition.
[2] Qualification rule: First 2 in each heat (Q) and the next 2 fastest (q) qualified for the final.
[3] [5]