Swimming at the 2019 World Aquatics Championships – Women's 50 metre backstroke

The heats were held on 24 July at 10:03.[3]

Rank	Heat	Lane	Name	Nationality	Time	Notes
1	5	4	Fu Yuanhui	China	27.70	Q
2	5	5	Etiene Medeiros	Brazil	27.85	Q
3	5	7	Kira Toussaint	Netherlands	27.86	Q
4	4	4	Georgia Davies	Great Britain	27.92	Q
5	5	8	Julie Kepp Jensen	Denmark	27.95	Q
6	3	5	Olivia Smoliga	United States	27.96	Q
7	5	1	Simona Kubová	Czech Republic	28.00	Q
8	3	4	Anastasia Fesikova	Russia	28.02	Q
9	4	5	Mimosa Jallow	Finland	28.04	Q
10	3	3	Alicja Tchórz	Poland	28.14	Q
11	4	6	Kathleen Baker	United States	28.17	Q
12	3	6	Maaike de Waard	Netherlands	28.19	Q
12	5	3	Chen Jie	China	28.19	Q
14	4	3	Kaylee McKeown	Australia	28.23	Q
15	5	2	Caroline Pilhatsch	Austria	28.28	Q
16	5	6	Daria Vaskina	Russia	28.29	Q
17	4	2	Silvia Scalia	Italy	28.30
18	3	7	Stephanie Au	Hong Kong	28.31
19	4	1	Minna Atherton	Australia	28.32
20	3	2	Natsumi Sakai	Japan	28.41
21	3	1	Theodora Drakou	Greece	28.48
22	3	8	Im Da-sol	South Korea	28.50
23	5	0	Ingeborg Løyning	Norway	28.67
24	3	0	Katalin Burián	Hungary	28.84
25	4	0	Karolina Hájková	Slovakia	29.04
26	3	9	Louise Hansson	Sweden	29.12
27	4	9	Diana Nazarova	Kazakhstan	29.51
28	5	9	Ekaterina Avramova	Turkey	29.61
29	2	4	Eygló Ósk Gústafsdóttir	Iceland	29.82
30	2	6	Marie Khoury	Lebanon	30.39	NR
31	2	3	Mónica Ramírez	Andorra	30.53
32	1	9	Nimia Murua	Panama	30.77
33	2	5	Maria Arrua	Paraguay	30.86
34	2	7	Xiomara Getrouw	Suriname	31.42
35	1	1	Sophia Diagne	Senegal	31.98
36	2	2	Kimberly Ince	Grenada	32.27
37	2	8	Cheang Weng Lam	Macau	33.01
38	2	0	Colleen Furgeson	Marshall Islands	33.28
39	2	1	Robyn Young	Eswatini	33.54
40	1	8	Nooran Ba-Matraf	Yemen	33.99
41	1	2	Jennifer Harding-Marlin	Saint Kitts and Nevis	34.08
42	1	7	Aika Watanabe	Northern Mariana Islands	35.04
43	2	9	Noelani Day	Tonga	35.17
44	1	4	Aishath Sausan	Maldives	35.41	NR
45	1	6	Nafissath Radji	Benin	36.01
46	1	0	Ekaterina Bordachyova	Tajikistan	37.95
47	1	3	Tayamika Chang'anamuno	Malawi	38.49
48	1	5	Shivani Bhatt	Tanzania	38.96
	4	7	Mie Nielsen	Denmark	DNS
	4	8	Alexandra Touretski	Switzerland

The semifinals were held on 24 July at 20:37.[4]

The final was held on 25 July at 20:37.[5]

Rank	Lane	Name	Nationality	Time	Notes
	2	Olivia Smoliga	United States	27.33	NR
	5	Etiene Medeiros	Brazil	27.44
	8	Daria Vaskina	Russia	27.51
4	3	Georgia Davies	Great Britain	27.65
4	6	Kaylee McKeown	Australia	27.65
6	4	Kathleen Baker	United States	27.69
7	7	Caroline Pilhatsch	Austria	27.78
8	1	Kira Toussaint	Netherlands	27.85