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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]

Medalists

Gold	Silver	Bronze
Nadeesha Ramanayake Sri Lanka	Aishwarya Mishra India	Haruna Kuboyama Japan

Results

Heats

Qualification rule: First 2 in each heat (Q) and the next 2 fastest (q) qualified for the final.^[3]

Rank	Heat	Name	Nationality	Time	Notes
1	1	Nadeesha Ramanayake	Sri Lanka	53.06	Q
2	3	Farida Soliyeva	Uzbekistan	53.49	Q
3	2	Aishwarya Mishra	India	53.58	Q
4	1	Laylo Allaberganova	Uzbekistan	53.65	Q, PB
5	3	Haruna Kuboyama	Japan	53.95	Q
6	1	Nanako Matsumoto	Japan	53.98	q
7	3	Alexandra Zalyubovskaya	Kazakhstan	54.66	q
8	1	Hoàng Thị Minh Hành	Vietnam	54.70	PB
9	3	Benny Nonthaman	Thailand	56.23
10	2	Jane Christa Ming	Hong Kong	56.64	Q
11	2	Arisa Weruwanarak	Thailand	56.78
12	2	Aliya Boshnak	Jordan	57.22
13	3	Pui Kwan Tang	Hong Kong	57.56
14	1	Solongo Batbold	Mongolia	57.62	PB
15	3	Thị Anh Thúc Hoàng	Vietnam	57.89
16	1	Hawwa Muzna Faiz	Maldives	58.49
17	2	Ziva Moosa	Maldives	58.55	PB
	1	Maureen Schrijvers	Philippines	DQ	R17.3.1^[4]
	2	Elina Mikhina	Kazakhstan	DQ	FS

Final

^[5]

Rank	Lane	Name	Nationality	Time	Notes
	5	Nadeesha Ramanayake	Sri Lanka	52.61	PB
	3	Aishwarya Mishra	India	53.07
	8	Haruna Kuboyama	Japan	53.80
4	1	Nanako Matsumoto	Japan	53.89
5	2	Alexandra Zalyubovskaya	Kazakhstan	54.54
6	6	Laylo Allaberganova	Uzbekistan	54.61
7	7	Jane Christa Ming	Hong Kong	56.12
DQ	4	Farida Soliyeva	Uzbekistan	~~52.95~~	PB