Swimming at the 2011 World Aquatics Championships – Women's 100 metre backstroke

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

	Name	Nation	Time	Location	Date
World record Championship record	Gemma Spofforth	United Kingdom	58.12	Rome	July 28, 2009

53 swimmers participated in 7 heats, qualified swimmers are listed:^[1]

Rank	Heat	Lane	Name	Nationality	Time	Notes
1	6	3	Natalie Coughlin	United States	59.73	Q
2	7	2	Sinead Russell	Canada	59.80	Q
3	5	4	Emily Seebohm	Australia	59.87	Q
4	6	4	Aya Terakawa	Japan	59.95	Q
5	6	6	Elizabeth Pelton	United States	1:00.19	Q
6	7	3	Belinda Hocking	Australia	1:00.23	Q
7	5	3	Shiho Sakai	Japan	1:00.34	Q
8	6	5	Elizabeth Simmonds	Great Britain	1:00.38	Q
9	6	1	Sharon van Rouwendaal	Netherlands	1:00.61	Q
10	7	4	Zhao Jing	China	1:00.66	Q
11	5	6	Julia Wilkinson	Canada	1:00.82	Q
12	7	5	Anastasia Zuyeva	Russia	1:00.88	Q
13	5	2	Duane da Rocha	Spain	1:01.19	Q
14	4	3	Karin Prinsloo	South Africa	1:01.34	Q
15	5	1	Daryna Zevina	Ukraine	1:01.36	Q
16	7	8	Ekaterina Avramova	Bulgaria	1:01.39	Q NR
17	6	7	Melissa Ingram	New Zealand	1:01.48
18	7	7	Mercedes Peris	Spain	1:01.55
19	5	7	Kseniya Moskvina	Russia	1:01.59
20	7	1	Elena Gemo	Italy	1:01.62
21	6	2	Jenny Mensing	Germany	1:01.64
22	7	6	Gao Chang	China	1:01.84
23	5	5	Gemma Spofforth	Great Britain	1:01.89
24	4	2	Mie Nielsen	Denmark	1:01.90
25	4	7	Alicja Tchorz	Poland	1:02.04
26	6	8	Maria Gonzalez Ramirez	Mexico	1:02.16
27	4	8	Lau Yin Yan	Hong Kong	1:02.45
28	4	1	Kimberly Buys	Belgium	1:02.48
29	2	5	Anja Čarman	Slovenia	1:02.61
30	4	5	Simona Baumrtová	Czech Republic	1:02.71
31	3	1	Sanja Jovanović	Croatia	1:02.75
32	5	8	Alina Vats	Ukraine	1:02.80
33	2	3	Yulduz Kuchkarova	Uzbekistan	1:02.98
34	2	6	Anna Volchkov	Israel	1:03.12
35	3	2	Hanna-Maria Seppälä	Finland	1:03.18
36	4	6	Therese Svendsen	Sweden	1:03.36
37	3	5	Melanie Nocher	Ireland	1:03.43
38	2	4	Kiera Aitken	Bermuda	1:03.59
39	3	6	Hazal Sarikaya	Turkey	1:03.69
40	3	7	Yekaterina Rudenko	Kazakhstan	1:03.78
41	4	4	Sviatlana Khakhlova	Belarus	1:03.99
42	3	3	Alana Dillette	Bahamas	1:04.27
43	3	4	Etiene Medeiros	Brazil	1:05.18
44	2	2	Tiffany Sudarma	Indonesia	1:05.19
45	2	1	Tatiana Perstneva	Moldova	1:05.35
46	2	7	Monica Ramirez Abella	Andorra	1:05.56
47	1	4	Ines Remarsaro	Uruguay	1:05.73
48	2	8	Karen Vilorio	Honduras	1:07.15
49	3	8	Shana Lim	Singapore	1:07.23
50	1	5	Siona Huxley	Saint Lucia	1:08.96
51	1	3	Anahit Barseghyan	Armenia	1:08.99
52	1	6	Jessika Cossa	Mozambique	1:09.74
53	1	2	Angelique Trinquier	Monaco	1:11.38

The semifinals were held at 18:46.^[2]

Rank	Lane	Name	Nationality	Time	Notes
1	7	Anastasia Zuyeva	Russia	59.41	Q
2	2	Zhao Jing	China	59.44	Q
3	4	Sinead Russell	Canada	59.68	Q, NR
4	3	Belinda Hocking	Australia	59.69	Q
5	6	Elizabeth Simmonds	Great Britain	59.80	Q
6	5	Aya Terakawa	Japan	59.81	Q
7	8	Ekaterina Avramova	Bulgaria	1:01.10	NR
8	1	Karin Prinsloo	South Africa	1:01.54

Rank	Lane	Name	Nationality	Time	Notes
1	4	Natalie Coughlin	United States	59.38	Q
2	5	Emily Seebohm	Australia	59.54	Q
3	6	Shiho Sakai	Japan	59.94
4	8	Daryna Zevina	Ukraine	1:00.05	NR
5	2	Sharon van Rouwendaal	Netherlands	1:00.14
5	3	Elizabeth Pelton	United States	1:00.14
7	7	Julia Wilkinson	Canada	1:00.35
8	1	Duane da Rocha	Spain	1:00.55

The final was held at 18:11.^[3]

Rank	Lane	Name	Nationality	Time	Notes
	3	Zhao Jing	China	59.05
	5	Anastasia Zuyeva	Russia	59.06
	4	Natalie Coughlin	United States	59.15
4	6	Emily Seebohm	Australia	59.21
5	8	Aya Terakawa	Japan	59.35
6	7	Belinda Hocking	Australia	59.53
7	1	Elizabeth Simmonds	Great Britain	59.89
8	2	Sinead Russell	Canada	1:00.20

• 2011 World Aquatics Championships: Women's 100 metre backstroke start list^{[permanent dead link]}, from OmegaTiming.com; retrieved 2011-07-22.