# Swimming at the 2013 World Aquatics Championships – Women's 50 metre butterfly

The women's 50 metre butterfly event in swimming at the 2013 World Aquatics Championships took place on 2–3 August at the Palau Sant Jordi in Barcelona, Spain.

## Records

Prior to this competition, the existing world and championship records were:
| World record | Therese Alshammar (SWE) | 25.07 | Rome, Italy | 1 August 2009 |
| Competition record | Therese Alshammar (SWE) | 25.07 | Rome, Italy | 1 August 2009 |

## Results
### Heats

The heats were held at 10:24.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 6 | 5 | Francesca Halsall | Great Britain | 25.69 | Q |
| 1 | 7 | 4 | Jeanette Ottesen | Denmark | 25.69 | Q |
| 3 | 7 | 6 | Lu Ying | China | 25.82 | Q |
| 4 | 5 | 8 | Brittany Elmslie | Australia | 26.03 | Q |
| 5 | 5 | 5 | Christine Magnuson | United States | 26.12 | Q |
| 6 | 7 | 5 | Inge Dekker | Netherlands | 26.15 | Q |
| 7 | 5 | 3 | Dana Vollmer | United States | 26.29 | Q |
| 8 | 5 | 4 | Ranomi Kromowidjojo | Netherlands | 26.31 | Q |
| 9 | 7 | 7 | Silvia di Pietro | Italy | 26.31 | Q |
| 10 | 7 | 3 | Kimberly Buys | Belgium | 26.35 | Q |
| 11 | 6 | 6 | Sophia Batchelor | New Zealand | 26.45 | Q |
| 11 | 7 | 0 | Farida Osman | Egypt | 26.45 | Q |
| 13 | 6 | 9 | Tao Li | Singapore | 26.48 | Q |
| 14 | 5 | 6 | Svetlana Chimrova | Russia | 26.51 | Q |
| 15 | 7 | 8 | Sandrine Mainville | Canada | 26.52 | Q |
| 16 | 6 | 3 | Mélanie Henique | France | 26.54 | QSO |
| 16 | 6 | 8 | Alexandra Wenk | Germany | 26.54 | QSO |
| 18 | 6 | 4 | Alicia Coutts | Australia | 26.56 | |
| 19 | 5 | 7 | Ilaria Bianchi | Italy | 26.63 | |
| 20 | 7 | 2 | Daynara de Paula | Brazil | 26.68 | |
| 21 | 6 | 7 | Louise Hansson | Sweden | 26.71 | |
| 22 | 6 | 1 | Anna Dowgiert | Poland | 26.72 | |
| 23 | 7 | 9 | Elmira Aigaliyeva | Kazakhstan | 26.76 | |
| 24 | 6 | 2 | Ingvild Snildal | Norway | 26.87 | |
| 25 | 5 | 2 | Noemie Thomas | Canada | 26.88 | |
| 26 | 4 | 8 | Jeserik Pinto | Venezuela | 26.94 | NR |
| 27 | 6 | 0 | Siobhan-Marie O'Connor | Great Britain | 26.98 | |
| 28 | 5 | 0 | Amit Ivry | Israel | 27.04 | |
| 29 | 4 | 3 | Carolina Colorado Henao | Colombia | 27.18 | |
| 30 | 4 | 5 | Hwang Seo-Jin | South Korea | 27.22 | |
| 31 | 4 | 2 | Katarína Listopadová | Slovakia | 27.32 | |
| 32 | 5 | 9 | Trudi Maree | South Africa | 27.40 | |
| 33 | 4 | 1 | Lisa Zaiser | Austria | 27.41 | |
| 34 | 5 | 1 | Kristel Vourna | Greece | 27.49 | |
| 35 | 4 | 6 | İris Rosenberger | Turkey | 27.66 | |
| 35 | 4 | 7 | Gabriela Ņikitina | Latvia | 27.66 | |
| 35 | 4 | 9 | Chan Kin Lok | Hong Kong | 27.66 | |
| 38 | 7 | 1 | Marie Wattel | France | 27.77 | |
| 39 | 4 | 0 | Rita Medrano | Mexico | 28.20 | |
| 40 | 3 | 4 | Marie Meza | Costa Rica | 28.43 | |
| 41 | 3 | 6 | Poula Øssursdóttir Mohr | Faroe Islands | 28.52 | |
| 42 | 3 | 3 | Dorian McMenemy | Dominican Republic | 28.53 | |
| 43 | 3 | 5 | María López Nery | Paraguay | 28.84 | |
| 44 | 4 | 4 | Maria José Ribera | Bolivia | 29.23 | |
| 45 | 1 | 3 | Ophelia Swayne | Ghana | 29.60 | |
| 46 | 3 | 2 | Dalia Torrez Zamora | Nicaragua | 29.62 | |
| 47 | 2 | 5 | Tegan McCarthy | Papua New Guinea | 30.17 | |
| 48 | 3 | 8 | Mira Shami | Jordan | 30.42 | |
| 49 | 3 | 0 | Felicity Passon | Seychelles | 30.46 | |
| 50 | 3 | 1 | Emily Mueti | Kenya | 30.55 | |
| 51 | 2 | 3 | San Su Moe Theint | Myanmar | 30.58 | |
| 52 | 3 | 9 | Irene Prescott | Tonga | 30.87 | |
| 53 | 2 | 6 | Deandra van der Colff | Botswana | 31.96 | |
| 54 | 3 | 7 | Oreoluwa Cherebin | Grenada | 32.23 | |
| 55 | 2 | 4 | Afsana Ismayilova | Azerbaijan | 32.29 | |
| 56 | 2 | 1 | Johanna Umurungi | Rwanda | 32.35 | |
| 57 | 2 | 8 | Osisang Chilton | Palau | 33.92 | |
| 58 | 2 | 7 | Shreya Dhital | Nepal | 34.01 | |
| 59 | 2 | 2 | Angel de Jesus | Northern Mariana Islands | 34.82 | |
| 60 | 1 | 4 | Danisha Paul | Micronesia | 38.39 | |
| | 1 | 5 | Emilia Pikkarainen | Finland | | DNS |

#### Swim-off

The swim-off was held at 11:29.
| Rank | Lane | Name | Nationality | Time | Notes |
| 1 | 4 | Mélanie Henique | France | 25.94 | Q |
| 2 | 8 | Alexandra Wenk | Germany | 26.78 | |

### Semifinals

The semifinals were held at 19:15.

#### Semifinal 1

| Rank | Lane | Name | Nationality | Time | Notes |
| 1 | 4 | Jeanette Ottesen | Denmark | 25.50 | Q |
| 2 | 6 | Ranomi Kromowidjojo | Netherlands | 25.68 | Q |
| 3 | 8 | Mélanie Henique | France | 25.95 | Q |
| 4 | 3 | Inge Dekker | Netherlands | 26.11 | Q |
| 5 | 7 | Farida Osman | Egypt | 26.12 | Q, AF |
| 6 | 5 | Brittany Elmslie | Australia | 26.13 | |
| 7 | 1 | Svetlana Chimrova | Russia | 26.47 | |
| 8 | 2 | Kimberly Buys | Belgium | 26.48 | |

#### Semifinal 2

| Rank | Lane | Name | Nationality | Time | Notes |
| 1 | 4 | Francesca Halsall | Great Britain | 25.90 | Q |
| 2 | 6 | Dana Vollmer | United States | 26.06 | Q |
| 3 | 5 | Lu Ying | China | 26.12 | Q |
| 4 | 3 | Christine Magnuson | United States | 26.19 | |
| 5 | 7 | Sophia Batchelor | New Zealand | 26.34 | |
| 6 | 2 | Silvia di Pietro | Italy | 26.35 | |
| 7 | 1 | Tao Li | Singapore | 26.47 | |
| 8 | 8 | Sandrine Mainville | Canada | 26.59 | |

### Final

The final was held at 18:02.
| Rank | Lane | Name | Nationality | Time | Notes |
| | 4 | Jeanette Ottesen | Denmark | 25.24 | |
| | 8 | Lu Ying | China | 25.42 | AS |
| | 5 | Ranomi Kromowidjojo | Netherlands | 25.53 | |
| 4 | 3 | Francesca Halsall | Great Britain | 25.70 | |
| 5 | 7 | Inge Dekker | Netherlands | 25.83 | |
| 6 | 6 | Mélanie Henique | France | 25.96 | |
| 7 | 1 | Farida Osman | Egypt | 26.17 | |
| 8 | 2 | Dana Vollmer | United States | 26.46 | |