| Event: | Women's 100 metre butterfly |
| Championship: | 2015 World Aquatics Championships |
| Dates: | 2 August (heats and semifinals) 3 August (final) |
| Competitors: | 69 |
| Nations: | 57 |
| Win Value: | 55.64 |
| Gold: | Sarah Sjöström |
| Goldnoc: | SWE |
| Silver: | Jeanette Ottesen |
| Silvernoc: | DEN |
| Bronze: | Lu Ying |
| Bronzenoc: | CHN |
| Prev: | 2013 |
| Next: | 2017 |
The Women's 100 metre butterfly competition of the swimming events at the 2015 World Aquatics Championships was held on 2 August with the heats and the semifinals and 3 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 | |||
|---|---|---|---|---|---|---|---|---|
| 2 August | Semifinal 2 | align=left | align=left | 55.74 | , CR | |||
| 3 August | Final | align=left | align=left | 55.64 | , CR |
The heats were held on 2 August at 09:30.[2]
| Rank | Heat | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|---|
| 1 | 7 | 4 | Q | ||||
| 2 | 6 | 4 | Q | ||||
| 3 | 5 | 5 | Q | ||||
| 4 | 7 | 2 | Q | ||||
| 5 | 5 | 4 | Q | ||||
| 6 | 6 | 7 | Q | ||||
| 7 | 5 | 6 | Q | ||||
| 8 | 7 | 5 | Q | ||||
| 9 | 7 | 1 | Q, NR | ||||
| 10 | 6 | 5 | Q | ||||
| 11 | 6 | 6 | Q, =WJ | ||||
| 12 | 7 | 7 | Q | ||||
| 13 | 7 | 8 | Q, NR | ||||
| 14 | 6 | 3 | Q | ||||
| 15 | 7 | 0 | Q | ||||
| 16 | 5 | 3 | |||||
| 16 | 6 | 9 | , NR | ||||
| 18 | 5 | 1 | |||||
| 19 | 5 | 2 | |||||
| 20 | 6 | 2 | |||||
| 21 | 6 | 1 | |||||
| 22 | 6 | 8 | |||||
| 23 | 4 | 5 | |||||
| 24 | 7 | 9 | |||||
| 25 | 5 | 8 | |||||
| 26 | 5 | 7 | |||||
| 27 | 5 | 9 | NR | ||||
| 28 | 5 | 0 | |||||
| 29 | 4 | 8 | |||||
| 30 | 4 | 4 | |||||
| 31 | 6 | 0 | |||||
| 32 | 7 | 6 | |||||
| 33 | 4 | 3 | |||||
| 34 | 4 | 7 | 1:00.16 | ||||
| 34 | 4 | 1 | 1:00.16 | ||||
| 36 | 4 | 9 | 1:00.30 | ||||
| 37 | 3 | 4 | 1:00.42 | ||||
| 38 | 3 | 5 | 1:00.58 | NR | |||
| 39 | 4 | 0 | 1:01.15 | ||||
| 40 | 3 | 7 | 1:01.53 | ||||
| 41 | 3 | 3 | 1:01.59 | ||||
| 42 | 3 | 2 | 1:02.37 | ||||
| 43 | 3 | 6 | 1:02.43 | ||||
| 44 | 3 | 8 | 1:02.83 | ||||
| 45 | 4 | 6 | 1:02.97 | ||||
| 46 | 4 | 2 | 1:03.18 | ||||
| 47 | 2 | 7 | 1:03.29 | ||||
| 48 | 3 | 9 | 1:03.39 | ||||
| 49 | 1 | 4 | 1:03.65 | ||||
| 50 | 3 | 1 | 1:03.85 | ||||
| 51 | 3 | 0 | 1:04.23 | ||||
| 52 | 2 | 5 | 1:04.48 | ||||
| 53 | 2 | 4 | 1:04.64 | ||||
| 54 | 2 | 2 | 1:04.75 | ||||
| 55 | 2 | 1 | 1:04.91 | ||||
| 56 | 2 | 6 | 1:05.70 | ||||
| 57 | 2 | 3 | 1:05.84 | ||||
| 58 | 2 | 8 | 1:06.10 | ||||
| 59 | 2 | 9 | 1:06.79 | ||||
| 60 | 1 | 3 | 1:07.09 | ||||
| 61 | 1 | 6 | 1:08.60 | ||||
| 62 | 1 | 5 | 1:08.82 | ||||
| 63 | 2 | 0 | 1:08.98 | ||||
| 64 | 1 | 1 | 1:12.43 | ||||
| 65 | 1 | 2 | 1:13.14 | ||||
| 66 | 1 | 0 | 1:14.05 | ||||
| 67 | 1 | 7 | 1:14.43 | ||||
| 68 | 1 | 9 | 1:16.48 | ||||
| 69 | 1 | 8 | 1:17.30 | ||||
| 7 | 3 |
The swim-off was held at 11:56.[3]
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 1 | 4 | 58.17 | Q | |||
| 2 | 5 | 58.22 | NR |
The semifinals were held on 2 August at 17:32.[4]
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 1 | 4 | 57.04 | Q | |||
| 2 | 5 | 57.36 | Q | |||
| 3 | 6 | 57.59 | Q | |||
| 4 | 3 | 57.77 | Q, NR | |||
| 5 | 7 | 58.05 | ||||
| 6 | 2 | 58.17 | ||||
| 7 | 8 | 58.27 | ||||
| 8 | 1 | 58.49 |
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 1 | 4 | 55.74 | Q, | |||
| 2 | 3 | 57.52 | Q | |||
| 3 | 7 | 57.63 | Q, WJ | |||
| 4 | 5 | 58.05 | ||||
| 5 | 6 | 58.14 | ||||
| 6 | 2 | 58.44 | ||||
| 7 | 8 | 58.45 | ||||
| 8 | 1 | 59.08 |
The final was held on 3 August at 17:40.[5]
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 4 | 55.64 | |||||
| 5 | 57.05 | |||||
| 3 | 57.48 | |||||
| 4 | 2 | 57.67 | ||||
| 5 | 6 | 57.69 | ||||
| 6 | 7 | 57.85 | ||||
| 7 | 8 | 57.94 | ||||
| 8 | 1 | 58.22 |