Swimming at the 2013 World Aquatics Championships – Women's 100 metre breaststroke
The women's 100 metre breaststroke event in swimming at the 2013 World Aquatics Championships took place on 29–30 July at the Palau Sant Jordi in Barcelona, Spain.
Records
Prior to this competition, the existing world and championship records were:The following new records were set during this competition.
| Date | Event | Name | Nationality | Time | Record |
| 29 July | Heats | Rūta Meilutytė | 1:04.52 | CR | |
| 29 July | Semifinal 2 | Rūta Meilutytė | 1:04.35 | , CR |
Results
Heats
The heats were held at 10:30.| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 7 | 4 | Rūta Meilutytė | 1:04.52 | Q, CR, EU | |
| 2 | 7 | 5 | Jessica Hardy | 1:05.18 | Q | |
| 3 | 5 | 5 | Yuliya Yefimova | 1:05.24 | Q, NR | |
| 4 | 6 | 4 | 1:06.30 | Q | ||
| 5 | 6 | 3 | Viktoriya Solnceva | 1:06.79 | Q, NR | |
| 6 | 5 | 4 | Breeja Larson | 1:06.83 | Q | |
| 7 | 6 | 1 | Marina García | 1:07.18 | Q, NR | |
| 8 | 7 | 3 | Jennie Johansson | 1:07.21 | Q | |
| 9 | 6 | 6 | Sally Foster | 1:07.59 | Q | |
| 10 | 5 | 3 | Alia Atkinson | 1:07.76 | Q | |
| 11 | 6 | 5 | Satomi Suzuki | 1:07.79 | Q | |
| 12 | 5 | 1 | Fiona Doyle | 1:07.88 | Q | |
| 13 | 5 | 7 | Petra Chocová | 1:08.18 | Q, NR | |
| 14 | 7 | 6 | Moniek Nijhuis | 1:08.29 | Q | |
| 15 | 6 | 2 | Samantha Marshall | 1:08.33 | Q | |
| 16 | 5 | 0 | Kim Janssens | 1:08.36 | Q, NR | |
| 17 | 7 | 7 | Sun Ye | 1:08.49 | ||
| 18 | 4 | 3 | Amit Ivry | 1:08.52 | NR | |
| 19 | 7 | 8 | Lisa Fissneider | 1:08.53 | ||
| 20 | 5 | 8 | Shi Jinglin | 1:08.59 | ||
| 20 | 7 | 9 | Jenna Laukkanen | 1:08.59 | NR | |
| 22 | 5 | 2 | Sophie Allen | 1:08.62 | ||
| 22 | 7 | 0 | Caroline Ruhnau | 1:08.62 | ||
| 24 | 6 | 8 | Joline Höstman | 1:08.63 | ||
| 25 | 6 | 7 | Anna Belousova | 1:08.69 | ||
| 26 | 5 | 9 | Back Su-Yeon | 1:09.11 | ||
| 27 | 5 | 6 | Kanako Watanabe | 1:09.28 | ||
| 28 | 7 | 2 | Tera van Beilen | 1:09.45 | ||
| 29 | 7 | 1 | Michela Guzzetti | 1:09.54 | ||
| 30 | 4 | 4 | Hrafnhildur Lúthersdóttir | 1:09.75 | ||
| 31 | 6 | 0 | Mariia Liver | 1:09.95 | ||
| 32 | 4 | 5 | Tara-Lynn Nicholas | 1:10.22 | ||
| 33 | 3 | 4 | Yvette Man Yi Kong | 1:10.37 | ||
| 34 | 4 | 6 | Julia Sebastian | 1:10.56 | ||
| 35 | 4 | 2 | Erica Dittmer | 1:10.82 | ||
| 36 | 4 | 7 | Samantha Yeo | 1:11.17 | ||
| 37 | 4 | 1 | Siow Yi Ting | 1:11.25 | ||
| 37 | 4 | 0 | Alona Ribakova | 1:11.25 | ||
| 39 | 6 | 9 | Beatriz Travalon | 1:11.39 | ||
| 40 | 4 | 9 | Caroline Reitshammer | 1:11.43 | ||
| 41 | 1 | 3 | Dariya Talanova | 1:11.45 | ||
| 42 | 4 | 8 | Zuzana Mimovicova | 1:11.67 | ||
| 43 | 3 | 5 | Ioana Alexandra Popa | 1:11.81 | ||
| 44 | 3 | 7 | Daniela Lindemeier | 1:12.06 | ||
| 45 | 3 | 3 | Ivana Ninković | 1:12.39 | ||
| 46 | 3 | 6 | Chen I-chuan | 1:13.25 | ||
| 47 | 3 | 1 | Tatiana Chişca | 1:14.11 | ||
| 48 | 2 | 6 | Vanessa Rivas | 1:14.77 | NR | |
| 49 | 3 | 8 | Evita Leter | 1:15.31 | ||
| 50 | 3 | 2 | Irene Chrysostomou | 1:15.45 | ||
| 51 | 2 | 3 | Barbara Vali-Skelton | 1:16.03 | ||
| 52 | 3 | 0 | Jamila Lunkuse | 1:16.15 | ||
| 53 | 2 | 4 | Natalia Gomez | 1:16.96 | ||
| 54 | 2 | 7 | Lianna Swan | 1:19.61 | NR | |
| 55 | 2 | 2 | Rachael Tonjor | 1:19.81 | ||
| 56 | 2 | 5 | Chade Nersicio | 1:21.47 | ||
| 57 | 2 | 8 | Bonita Imsirovic | 1:21.97 | ||
| 58 | 2 | 1 | Mira Shami | 1:22.05 | ||
| 59 | 1 | 4 | Shne Joachim | 1:23.09 | ||
| 60 | 1 | 5 | Charmel Sogbadji | 1:43.41 | ||
| 60 | 1 | 6 | Ramatoulaye Camara | 1:43.41 | ||
| 3 | 9 | Ngô Thị Ngọc Quỳnh |
Semifinals
The semifinals were held at 18:29.Semifinal 1
Semifinal 2
Final
The final was held at 19:48.| Rank | Lane | Name | Nationality | Time | Notes |
| 4 | Rūta Meilutytė | 1:04.42 | |||
| 5 | Yuliya Yefimova | 1:05.02 | NR | ||
| 6 | Jessica Hardy | 1:05.52 | |||
| 4 | 3 | 1:05.93 | |||
| 5 | 2 | Breeja Larson | 1:06.74 | ||
| 6 | 7 | Viktoriya Solnceva | 1:06.81 | ||
| 7 | 8 | Marina García | 1:07.08 | NR | |
| 8 | 1 | Jennie Johansson | 1:07.41 |