Swimming at the 2019 World Aquatics Championships – Women's 100 metre backstroke

The heats were held on 22 July at 10:00.[3]

Rank	Heat	Lane	Name	Nationality	Time	Notes
1	6	4	Kylie Masse	Canada	58.91	Q
2	6	3	Minna Atherton	Australia	59.22	Q
3	5	3	Kaylee McKeown	Australia	59.25	Q
4	7	4	Kathleen Baker	United States	59.31	Q
5	7	5	Olivia Smoliga	United States	59.55	Q
6	5	4	Taylor Ruck	Canada	59.82	Q
7	7	6	Georgia Davies	Great Britain	59.84	Q
8	6	2	Simona Kubová	Czech Republic	59.95	Q
9	6	5	Margherita Panziera	Italy	59.99	Q
10	7	3	Natsumi Sakai	Japan	1:00.05	Q
11	7	7	Laura Riedemann	Germany	1:00.15	Q
12	5	2	Kira Toussaint	Netherlands	1:00.27	Q
13	5	5	Anastasia Fesikova	Russia	1:00.38	Q
14	6	9	Ingeborg Løyning	Norway	1:00.47	Q, NR
15	5	7	Chen Jie	China	1:00.64	Q
16	6	6	Daria Vaskina	Russia	1:00.66	Q
17	7	8	Silvia Scalia	Italy	1:00.74
18	7	0	Im Da-sol	South Korea	1:00.86
19	5	6	Mie Nielsen	Denmark	1:00.99
20	4	3	Caroline Pilhatsch	Austria	1:01.07	NR
21	4	4	Alicja Tchórz	Poland	1:01.08
22	6	7	Fu Yuanhui	China	1:01.19
23	7	1	Katalin Burián	Hungary	1:01.22
24	5	8	Stephanie Au	Hong Kong	1:01.25
25	7	9	Maaike de Waard	Netherlands	1:01.26
26	5	1	Mimosa Jallow	Finland	1:01.39
27	5	0	Jessica Fullalove	Great Britain	1:01.40
28	6	1	Béryl Gastaldello	France	1:01.45
29	4	1	Kristina Steina	Latvia	1:01.49
30	4	0	Ali Galyer	New Zealand	1:01.53
31	4	8	África Zamorano	Spain	1:01.66
32	5	9	Anastasia Gorbenko	Israel	1:01.77
33	3	1	Gabriela Georgieva	Bulgaria	1:01.81
34	6	0	Michelle Coleman	Sweden	1:01.95
35	4	2	Ekaterina Avramova	Turkey	1:02.24
36	4	7	Krystal Lara	Dominican Republic	1:02.71
37	4	5	Nina Kost	Switzerland	1:02.86
38	3	7	Celina Márquez	El Salvador	1:02.94
39	3	5	Mariella Venter	South Africa	1:02.95
40	4	9	Tatiana Salcuțan	Moldova	1:03.08
41	3	4	Karolina Hájková	Slovakia	1:03.26
42	3	3	Eygló Ósk Gústafsdóttir	Iceland	1:03.46
43	2	4	Danielle Titus	Barbados	1:03.66	NR
44	3	8	Signhild Joensen	Faroe Islands	1:04.04
45	4	6	Isabella Arcila	Colombia	1:04.07
46	3	6	Celismar Guzman	Puerto Rico	1:04.11
47	3	2	Diana Nazarova	Kazakhstan	1:04.22
48	3	9	Lushavel Stickland	Samoa	1:05.22
49	2	6	Mia Krstevska	North Macedonia	1:06.00
50	3	0	Kimiko Raheem	Sri Lanka	1:06.52
51	1	2	Robyn Lee	Zimbabwe	1:06.96
52	2	5	Maria Arrua	Paraguay	1:07.08
53	1	4	Catarina Sousa	Angola	1:07.96	NR
54	2	3	Eda Zeqiri	Kosovo	1:08.37
55	1	3	Idealy Tendrinavalona	Madagascar	1:08.41
56	2	2	Kimberly Ince	Grenada	1:09.85
57	2	9	Leedia Al-Safadi	Jordan	1:10.11
58	2	7	Colleen Furgeson	Marshall Islands	1:13.64
59	1	6	Robyn Young	Eswatini	1:13.97
60	1	5	Osisang Chilton	Palau	1:16.55
61	2	0	Ammara Pinto	Malawi	1:16.68
62	2	1	Aishath Sausan	Maldives	1:19.82
63	2	8	Shivani Bhatt	Tanzania	1:24.04
	6	8	Louise Hansson	Sweden	DNS
	7	2	Katinka Hosszú	Hungary

The semifinals were held on 22 July at 20:54.[4]

The final was held on 23 July at 20:51.[5]

Rank	Lane	Name	Nationality	Time	Notes
	4	Kylie Masse	Canada	58.60
	5	Minna Atherton	Australia	58.85
	7	Olivia Smoliga	United States	58.91
4	3	Taylor Ruck	Canada	58.96
5	2	Kaylee McKeown	Australia	59.10
6	6	Kathleen Baker	United States	59.56
6	8	Natsumi Sakai	Japan	59.56
8	1	Daria Vaskina	Russia	59.74