| Event: | Women's 50 metre butterfly |
| Championship: | 2015 World Aquatics Championships |
| Dates: | 7 August (heats and semifinals) 8 August (final) |
| Competitors: | 64 |
| Nations: | 56 |
| Win Value: | 24.96 |
| Gold: | Sarah Sjöström |
| Goldnoc: | SWE |
| Silver: | Jeanette Ottesen |
| Silvernoc: | DEN |
| Bronze: | Lu Ying |
| Bronzenoc: | CHN |
| Prev: | 2013 |
| Next: | 2017 |
The Women's 50 metre butterfly competition of the swimming events at the 2015 World Aquatics Championships was held on 7 August with the heats and the semifinals and 8 August with the final.[1]
Prior to the competition, the existing world and championship records were as follows.The following new records were set during this competition.
| Date | Event | Name | Nationality | Time | Record | |||
|---|---|---|---|---|---|---|---|---|
| 7 August | align=left | align=left | 25.06 | CR | ||||
| 8 August | align=left | align=left | 24.96 | CR |
The heats were held at 09:54[2]
| Rank | Heat | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|---|
| 1 | 7 | 4 | 25.43 | Q | |||
| 2 | 5 | 4 | 25.51 | Q | |||
| 3 | 7 | 5 | 25.66 | Q | |||
| 4 | 5 | 5 | 25.69 | Q | |||
| 5 | 6 | 4 | 25.86 | Q | |||
| 6 | 6 | 3 | 26.02 | Q | |||
| 7 | 6 | 6 | 26.07 | Q | |||
| 7 | 7 | 6 | 26.07 | Q | |||
| 9 | 6 | 7 | 26.24 | Q, NR | |||
| 10 | 5 | 2 | 26.28 | Q | |||
| 11 | 6 | 5 | 26.32 | Q | |||
| 12 | 7 | 2 | 26.33 | Q | |||
| 12 | 7 | 7 | 26.33 | Q | |||
| 14 | 7 | 3 | 26.46 | Q | |||
| 14 | 7 | 1 | 26.46 | Q | |||
| 16 | 5 | 8 | 26.49 | Q | |||
| 17 | 6 | 2 | 26.52 | ||||
| 18 | 7 | 8 | 26.54 | ||||
| 19 | 6 | 1 | 26.66 | ||||
| 20 | 6 | 8 | 26.68 | ||||
| 21 | 4 | 7 | 26.79 | NR | |||
| 21 | 5 | 3 | 26.79 | ||||
| 23 | 5 | 0 | 26.82 | ||||
| 24 | 4 | 3 | 26.84 | ||||
| 25 | 6 | 9 | 26.85 | ||||
| 26 | 4 | 0 | 26.90 | ||||
| 26 | 5 | 7 | 26.90 | ||||
| 26 | 7 | 0 | 26.90 | ||||
| 29 | 5 | 1 | 26.93 | ||||
| 30 | 4 | 8 | 26.99 | ||||
| 31 | 4 | 4 | 27.01 | ||||
| 31 | 5 | 9 | 27.01 | ||||
| 33 | 4 | 2 | 27.04 | NR | |||
| 34 | 5 | 6 | 27.11 | ||||
| 35 | 4 | 5 | 27.24 | ||||
| 36 | 4 | 1 | 27.49 | ||||
| 37 | 3 | 5 | 27.58 | ||||
| 37 | 4 | 9 | 27.58 | ||||
| 39 | 3 | 4 | 27.70 | ||||
| 40 | 3 | 3 | 28.16 | ||||
| 41 | 3 | 6 | 28.25 | ||||
| 42 | 3 | 2 | 28.32 | ||||
| 43 | 7 | 9 | 28.98 | ||||
| 44 | 3 | 1 | 29.00 | ||||
| 45 | 6 | 0 | 29.13 | ||||
| 46 | 2 | 3 | 29.21 | ||||
| 47 | 3 | 9 | 29.22 | ||||
| 48 | 3 | 7 | 29.29 | ||||
| 49 | 2 | 4 | 29.31 | ||||
| 50 | 3 | 8 | 29.57 | ||||
| 51 | 3 | 0 | 29.66 | ||||
| 52 | 2 | 7 | 30.02 | ||||
| 53 | 2 | 6 | 30.16 | ||||
| 54 | 2 | 5 | 30.23 | ||||
| 55 | 2 | 1 | 30.27 | ||||
| 56 | 2 | 9 | 31.38 | ||||
| 57 | 2 | 0 | 31.70 | ||||
| 58 | 2 | 8 | 31.90 | ||||
| 59 | 1 | 4 | 32.12 | ||||
| 60 | 1 | 3 | 32.81 | ||||
| 61 | 1 | 6 | 33.86 | ||||
| 62 | 1 | 5 | 36.15 | ||||
| 63 | 2 | 2 | 36.31 | ||||
| 64 | 1 | 2 | 41.13 | ||||
| 4 | 6 | DNS |
The semifinals were held at 18:45.[3]
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 1 | 4 | 25.27 | Q | |||
| 2 | 5 | 25.79 | Q | |||
| 3 | 3 | 25.81 | Q | |||
| 4 | 7 | 25.88 | Q, AF | |||
| 5 | 6 | 25.93 | ||||
| 6 | 8 | 26.24 | ||||
| 7 | 1 | 26.25 | ||||
| 8 | 2 | 26.43 |
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 1 | 4 | 25.06 | Q, CR | |||
| 2 | 3 | 25.71 | Q | |||
| 3 | 5 | 25.90 | Q | |||
| 4 | 2 | 25.91 | Q, NR | |||
| 5 | 1 | 26.03 | ||||
| 6 | 6 | 26.11 | ||||
| 7 | 7 | 26.17 | ||||
| 8 | 8 | 26.37 |
The final was held on 8 August at 17:32.[4]
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 4 | 24.96 | CR | ||||
| 5 | 25.34 | |||||
| 6 | 25.37 | AS | ||||
| 4 | 1 | 25.64 | ||||
| 5 | 7 | 25.78 | AF | |||
| 6 | 3 | 25.85 | ||||
| 7 | 2 | 25.93 | ||||
| 8 | 8 | 26.20 |