Swimming at the 2013 World Aquatics Championships – Women's 100 metre butterfly
The women's 100 metre butterfly event in swimming at the 2013 World Aquatics Championships took place on 28–29 July at the Palau Sant Jordi in Barcelona, Spain.
Records
Prior to this competition, the existing world and championship records were:Results
Heats
The heats were held at 10:00.| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 6 | 4 | Dana Vollmer | Q | ||
| 2 | 6 | 5 | Sarah Sjöström | Q | ||
| 3 | 6 | 3 | Katerine Savard | Q, NR | ||
| 4 | 5 | 4 | Alicia Coutts | Q | ||
| 5 | 5 | 5 | Jeanette Ottesen Gray | Q | ||
| 6 | 6 | 6 | Noemie Thomas | Q | ||
| 7 | 4 | 5 | Ilaria Bianchi | Q | ||
| 8 | 5 | 6 | Brittany Elmslie | Q | ||
| 9 | 4 | 6 | Jemma Lowe | Q | ||
| 10 | 5 | 3 | Claire Donahue | Q | ||
| 11 | 4 | 8 | Ingvild Snildal | Q | ||
| 12 | 4 | 4 | Lu Ying | Q | ||
| 13 | 6 | 2 | Tao Li | Q | ||
| 14 | 5 | 8 | Evelyn Verrasztó | Q | ||
| 15 | 5 | 0 | Daynara de Paula | Q | ||
| 16 | 6 | 0 | Judit Ignacio Sorribes | |||
| 16 | 6 | 7 | Natsumi Hoshi | |||
| 18 | 4 | 3 | Jiao Liuyang | |||
| 19 | 5 | 1 | Kimberly Buys | |||
| 19 | 5 | 2 | Svetlana Chimrova | |||
| 21 | 6 | 8 | Katarína Listopadová | |||
| 22 | 6 | 1 | Amit Ivry | |||
| 23 | 4 | 1 | Sophia Batchelor | |||
| 24 | 3 | 4 | Farida Osman | |||
| 25 | 4 | 0 | Elmira Aigaliyeva | 1:00.00 | ||
| 26 | 5 | 7 | Louise Hansson | 1:00.11 | ||
| 27 | 4 | 2 | Kristel Vourna | 1:00.33 | ||
| 28 | 4 | 7 | Emilia Pikkarainen | 1:00.47 | ||
| 29 | 3 | 5 | 1:00.65 | |||
| 30 | 4 | 9 | Marne Erasmus | 1:00.73 | ||
| 31 | 6 | 9 | Park Jin-Young | 1:00.78 | ||
| 32 | 5 | 9 | Sze Hang Yu | 1:01.01 | ||
| 33 | 3 | 6 | İris Rosenberger | 1:01.35 | ||
| 34 | 3 | 3 | Cheng Wan-jung | 1:01.61 | ||
| 35 | 3 | 2 | Jasmine Alkhaldi | 1:01.71 | ||
| 36 | 3 | 1 | Loreen Whitfield | 1:02.50 | ||
| 37 | 2 | 7 | Dorian McMenemy | 1:03.53 | ||
| 38 | 2 | 4 | Marie Laura Meza | 1:03.63 | ||
| 39 | 3 | 8 | Monalisa Arieswati | 1:03.93 | ||
| 40 | 2 | 6 | Dalia Tórrez Zamora | 1:04.43 | ||
| 41 | 2 | 2 | Poula Øssursdóttir Mohr | 1:04.58 | ||
| 42 | 3 | 7 | Barbara Caraballo | 1:04.65 | ||
| 43 | 3 | 0 | Caroline Puamau | 1:04.72 | ||
| 44 | 1 | 3 | Pooja Alva | 1:05.70 | ||
| 45 | 2 | 1 | Ana Nobrega | 1:06.55 | ||
| 46 | 2 | 3 | Noel Borshi | 1:06.77 | ||
| 47 | 2 | 8 | María José Ribera Pinto | 1:07.02 | ||
| 48 | 2 | 0 | Emily Mueti | 1:07.37 | ||
| 49 | 2 | 5 | Amboaratiana Domoinannava | 1:09.30 | ||
| 50 | 3 | 9 | Johanna Umurungi | 1:10.41 | ||
| 51 | 2 | 9 | Su Moe Theint San | 1:10.62 | ||
| 52 | 1 | 4 | Afsana Ismayilova | 1:16.58 | ||
| 53 | 1 | 5 | Charissa Panuve | 1:21.78 |
Swim-off
The swim-off was held at 12:09.| Rank | Lane | Name | Nationality | Time | Notes |
| 1 | 4 | Natsumi Hoshi | 58.83 | Q | |
| 2 | 5 | Judit Ignacio Sorribes | 58.87 |
Semifinals
The semifinals were held at 18:02.Semifinal 1
Semifinal 2
Final
The final was held at 18:10.| Rank | Lane | Name | Nationality | Time | Notes |
| 4 | Sarah Sjöström | 56.53 | |||
| 3 | Alicia Coutts | 56.97 | |||
| 6 | Dana Vollmer | 57.24 | |||
| 4 | 5 | Jeanette Ottesen Gray | 57.27 | ||
| 5 | 7 | Katerine Savard | 57.97 | ||
| 6 | 1 | Ilaria Bianchi | 58.11 | ||
| 7 | 2 | Noemie Thomas | 58.13 | ||
| 8 | 8 | Claire Donahue | 58.30 |