The Women's 100 metre breaststroke competition of the swimming events at the 2015 World Aquatics Championships was held on 3 August with the heats and the semifinals and 4 August with the final.[1]
| Women's 100 metre breaststroke at the 2015 World Aquatics Championships | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
 Medallists | ||||||||||
| Dates | 3 August (heats and semifinals) 4 August (final) | |||||||||
| Competitors | 70 from 61 nations | |||||||||
| Winning time | 1:05.66 | |||||||||
| Medalists | ||||||||||
| ||||||||||
Records
editPrior to the competition, the existing world and championship records were as follows.
| World record |  Rūta Meilutytė (LTU) | 1:04.35 | Barcelona, Spain | 29 July 2013 |
|---|---|---|---|---|
| Competition record | Rūta Meilutytė (LTU) | 1:04.35 | Barcelona, Spain | 29 July 2013 |
Results
editHeats
editThe heats were held on 3 August at 10:07.[2]
Semifinals
editThe semifinals were held on 3 August at 17:58.[3]
Semifinal 1
edit.JPG)
| Rank | Lane | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
| 1 | 5 | Rūta Meilutytė | Lithuania | 1:05.64 | Q |
| 2 | 4 | Shi Jinglin |  China | 1:06.28 | Q |
| 3 | 6 | Jennie Johansson |  Sweden | 1:06.76 | Q |
| 4 | 3 | Hrafnhildur Lúthersdóttir |  Iceland | 1:07.11 | Q |
| 5 | 1 | Rachel Nicol |  Canada | 1:07.24 | |
| 6 | 7 | Lorna Tonks |  Australia | 1:07.54 | |
| 7 | 8 | Jenna Laukkanen |  Finland | 1:07.60 | |
| 8 | 2 | Jessica Vall |  Spain | 1:08.02 |
Semifinal 2
edit| Rank | Lane | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
| 1 | 4 | Yuliya Yefimova |  Russia | 1:05.60 | Q |
| 2 | 2 | Alia Atkinson |  Jamaica | 1:06.21 | Q, NR |
| 3 | 3 | Kanako Watanabe |  Japan | 1:06.64 | Q |
| 4 | 8 | Arianna Castiglioni |  Italy | 1:06.95 | Q |
| 5 | 6 | Taylor McKeown | Australia | 1:07.19 | |
| 6 | 5 | Jessica Hardy |  United States | 1:07.22 | |
| 7 | 1 | Rikke Møller Pedersen |  Denmark | 1:07.42 | |
| 8 | 7 | Fanny Lecluyse |  Belgium | 1:07.75 |
Final
edit
The final was held on 4 August at 19:17.[4]
| Rank | Lane | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
 | 4 | Yuliya Yefimova | Russia | 1:05.66 | |
 | 5 | Rūta Meilutytė | Lithuania | 1:06.36 | |
 | 3 | Alia Atkinson | Jamaica | 1:06.42 | |
| 4 | 2 | Kanako Watanabe | Japan | 1:06.43 | |
| 5 | 6 | Shi Jinglin | China | 1:06.55 | |
| 6 | 8 | Hrafnhildur Lúthersdóttir | Iceland | 1:07.10 | |
| 7 | 7 | Jennie Johansson | Sweden | 1:07.17 | |
| 8 | 1 | Arianna Castiglioni | Italy | 1:07.60 |