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

The heats were held on 21 July at 10:45.[3]

Rank	Heat	Lane	Name	Nationality	Time	Notes
1	6	4	Sarah Sjöström	Sweden	56.45	Q
2	4	4	Emma McKeon	Australia	56.90	Q
3	6	5	Maggie MacNeil	Canada	57.10	Q
4	6	3	Elena Di Liddo	Italy	57.18	Q, NR
5	5	4	Kelsi Dahlia	United States	57.22	Q
6	6	7	Marie Wattel	France	57.23	Q
7	4	5	Louise Hansson	Sweden	57.50	Q
8	5	6	Katie McLaughlin	United States	57.67	Q
9	5	2	Anna Ntountounaki	Greece	57.88	Q
9	5	5	Brianna Throssell	Australia	57.88	Q
11	5	7	Angelina Köhler	Germany	57.92	Q
12	4	3	Zhang Yufei	China	58.02	Q
13	5	3	Svetlana Chimrova	Russia	58.10	Q
14	4	2	Rebecca Smith	Canada	58.20	Q
15	6	6	Ilaria Bianchi	Italy	58.26	Q
16	6	8	Hiroko Makino	Japan	58.33	Q
17	4	1	Farida Osman	Egypt	58.43
18	5	1	Wang Yichun	China	58.51
19	5	8	Suzuka Hasegawa	Japan	58.71
20	6	2	Béryl Gastaldello	France	58.83
21	5	0	Park Ye-rin	South Korea	58.99
22	3	4	Amina Kajtaz	Bosnia and Herzegovina	59.08	NR
23	4	6	Erin Gallagher	South Africa	59.21
24	4	7	Alys Thomas	Great Britain	59.25
25	6	1	Kimberly Buys	Belgium	59.26
26	6	0	Liliána Szilágyi	Hungary	59.32
27	5	9	Paulina Nogaj	Poland	59.82
28	4	8	Emilie Beckmann	Denmark	59.94
29	4	9	Ana Monteiro	Portugal	1:00.37
30	3	3	Remedy Rule	Philippines	1:00.42	NR[4]
31	3	7	Aksana Dziamidava	Belarus	1:00.51
32	3	6	Chan Kin Lok	Hong Kong	1:00.64
33	3	2	Aleyna Özkan	Turkey	1:00.68
34	3	8	Krystal Lara	Dominican Republic	1:00.79
35	3	1	Ellen Walshe	Ireland	1:00.85
36	3	5	Isabella Páez	Venezuela	1:01.27
37	4	0	Quah Jing Wen	Singapore	1:01.49
38	6	9	Miriam Guevara	Mexico	1:01.51
39	1	5	Alexis Margett	Bolivia	1:02.59
40	2	3	Emily Muteti	Kenya	1:02.88
41	3	9	Julimar Ávila	Honduras	1:03.64
42	3	0	Celina Márquez	El Salvador	1:03.93
43	2	4	Lia Ana Lima	Angola	1:04.40
44	1	4	Bisma Khan	Pakistan	1:07.19
45	1	3	Robyn Lee	Zimbabwe	1:07.63
46	2	2	Katie Rock	Albania	1:07.85
47	2	6	Yusra Mardini	FINA Independent Athletes	1:08.79
48	2	0	Moana Wind	Fiji	1:10.86
49	2	5	Aniqah Gaffoor	Sri Lanka	1:12.63
50	2	8	Khuyagbaataryn Enkhzul	Mongolia	1:14.23
51	2	7	Avice Meya	Uganda	1:19.69
52	2	1	Lucie Kouadio-Patinier	Ivory Coast	1:26.46

The semifinals were held on 21 July at 20:12.[5]

The final was held on 22 July at 20:10.[6]

Rank	Lane	Name	Nationality	Time	Notes
	5	Maggie MacNeil	Canada	55.83	AM
	4	Sarah Sjöström	Sweden	56.22
	6	Emma McKeon	Australia	56.61
4	7	Elena Di Liddo	Italy	57.07
5	2	Brianna Throssell	Australia	57.09
6	1	Kelsi Dahlia	United States	57.11
7	8	Louise Hansson	Sweden	57.16
8	3	Marie Wattel	France	57.29