2024 World Aquatics Swimming Championships (25 m) – Women's 100 metre backstroke

Women's 100 metre backstroke at the 2024 World Aquatics Swimming Championships (25 m)
Venue	Duna Arena
Location	Budapest, Hungary
Dates	10 December (heats and semifinals) 11 December (final)
Competitors	63 from 57 nations

The Women's 100 metre backstroke competition of the 2024 World Aquatics Swimming Championships (25 m) was held on 10 and 11 December 2024.

Records

Prior to the competition, the existing world and championship records were as follows.

World record	Regan Smith (USA)	54.27	Singapore	1 November 2024
Competition record	Katinka Hosszu (HUN)	55.03	Doha, Qatar	4 December 2014

Results

Heats

The heats were started on 10 December at 9:32.

Rank	Heat	Lane	Name	Nationality	Time	Notes
1	7	4	Regan Smith	United States	55.86	Q
2	6	4	Iona Anderson	Australia	56.25	Q
3	6	2	Katharine Berkoff	United States	56.33	Q
4	6	5	Anastasiya Shkurdai	Neutral Athletes A	56.50	Q
5	6	7	Kylie Masse	Canada	56.58	Q
6	7	5	Ingrid Wilm	Canada	56.66	Q
7	6	0	Carmen Weiler Sastre	Spain	56.68	Q
8	5	5	Xinan Qian	China	56.69	Q
9	6	9	Miranda Grana Perez	Neutral Athletes C	56.83	Q
10	6	3	Maaike De Waard	Netherlands	57.01	Q
11	5	3	Louise Hansson	Sweden	57.14	Q
12	7	3	Pauline Mahieu	France	57.18	Q
13	6	6	Hanna Rosvall	Sweden	57.26	Q
14	7	6	Mizuki Hirai	Japan	57.29	Q
15	5	2	Helena Gasson	New Zealand	57.43	Q
16	5	6	Huiyu Zheng	China	57.52	Q
17	5	4	Kira Toussaint	Netherlands	57.55	R
18	7	7	Giulia D'Innocenzo	Italy	57.82	R
19	7	2	Danielle Hill	Ireland	57.95
20	5	7	Elizaveta Agapitova	Neutral Athletes B	58.19
21	5	0	Adela Piskorska	Poland	58.31
22	7	1	Milana Stepanova	Neutral Athletes B	58.47
23	4	4	Xeniya Ignatova	Kazakhstan	59.01
24	7	0	Gabriela Georgieva	Bulgaria	59.06
25	4	5	Fanny Teijonsalo	Finland	59.27
26	6	8	Milla Drakopoulos	South Africa	59.33
27	5	1	Dora Molnar	Hungary	59.37
28	6	1	Aissia Claudia Prisecariu	Romania	59.39
29	4	1	Abril Aunchayna	Uruguay	59.56
29	4	3	Justine Elizabeth Murdock	Lithuania	59.56
31	7	9	Chloe Isleta	Philippines	59.71
32	5	8	Sum Yuet Cindy Cheung	Hong Kong	59.89
33	7	8	Seungwon Kim	South Korea	59.95
34	4	6	Carla González	Venezuela	1:00.11
35	4	2	Zuri Ferguson	Trinidad and Tobago	1:00.12
36	3	7	Masniari Wolf	Indonesia	1:00.43
37	3	5	Teresa Ivan	Slovakia	1:00.45
38	3	4	Elizabeth Jimenez	Dominican Republic	1:00.57
39	4	0	L.E. Estrada Caraballo	Cuba	1:00.74
40	5	9	Nika Sharafutdinova	Ukraine	1:00.79
41	2	4	Jessica Humphrey	Namibia	1:00.95
42	4	9	Melissa Diego	Guatemala	1:01.23
43	4	8	Danielle Titus	Barbados	1:01.58
44	3	6	Logan Watson-Brown	Bermuda	1:01.68
45	3	2	Elisabeth Erlendsdottir	Faroe Islands	1:02.60
46	2	7	Ashley Calderon	Honduras	1:02.83
47	2	5	Lara Gimenez Yegros	Paraguay	1:03.10
48	3	1	Anishta Teeluck	Mauritius	1:03.40
49	3	3	Natalia Zaiteva	Moldova	1:03.41
50	2	3	Taline Mourad	Lebanon	1:03.54
51	2	2	Leanna Wainwright	Jamaica	1:04.18
52	3	8	Ganga Senavirathne	Sri Lanka	1:04.40
53	4	7	Ariuntamir Enkh-Amgalan	Mongolia	1:04.46
54	3	0	Un Iao Wong	Macau	1:04.64
55	3	9	Mia Laban	Cook Islands	1:04.96
56	2	6	Idealy Tendrinavalona	Madagascar	1:05.59
57	2	8	Aaliyah Palestrini	Seychelles	1:06.67
58	2	1	Nubia Adjei	Ghana	1:07.58
59	1	3	Piper Raho	Northern Mariana Islands	1:09.62
60	1	5	Juthi Akter	Bangladesh	1:11.25
61	2	0	Ammara Pinto	Malawi	1:17.28
62	1	4	Aliyana Kachra	Tanzania	1:22.52
63	2	9	Chloe Ameara	Vanuatu	1:25.21

Semifinals

The semifinals were started on 10 December at 18:24.

Rank	Heat	Lane	Name	Nationality	Time	Notes
1	2	4	Regan Smith	United States	55.05	Q
2	2	5	Katharine Berkoff	United States	55.37	Q
3	1	3	Ingrid Wilm	Canada	55.85	Q
4	1	4	Iona Anderson	Australia	55.99	Q
5	2	3	Kylie Masse	Canada	56.06	Q
6	1	5	Anastasiya Shkurdai	Neutral Athletes A	56.07	Q
7	2	6	Carmen Weiler Sastre	Spain	56.09	Q
8	2	7	Louise Hansson	Sweden	56.17	Q
9	1	7	Pauline Mahieu	France	56.36	R
10	2	2	Miranda Grana Perez	Neutral Athletes C	56.62	R
11	1	6	Xinan Qian	China	56.79
12	1	2	Maaike De Waard	Netherlands	56.94
13	2	1	Hanna Rosvall	Sweden	57.24
14	1	1	Mizuki Hirai	Japan	57.44
15	2	8	Helena Gasson	New Zealand	57.64
16	1	8	Huiyu Zheng	China	58.07