# Swimming at the 2015 World Aquatics Championships – Women's 100 metre backstroke

The Women's 100 metre backstroke 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.

## Records

Prior to the competition, the existing world and championship records were as follows.
| World record | Gemma Spofforth (GBR) | 58.12 | Rome, Italy | 28 July 2009 |
| Competition record | Gemma Spofforth (GBR) | 58.12 | Rome, Italy | 28 July 2009 |

## Results
### Heats

The heats were held on 3 August at 09:30.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 5 | 5 | Katinka Hosszú | Hungary | 58.78 | Q, WD, NR |
| 2 | 7 | 4 | Emily Seebohm | Australia | 59.04 | Q |
| 3 | 6 | 4 | Madison Wilson | Australia | 59.17 | Q |
| 4 | 5 | 4 | Mie Nielsen | Denmark | 59.40 | Q |
| 5 | 7 | 5 | Missy Franklin | United States | 59.59 | Q |
| 6 | 5 | 1 | Anastasia Fesikova | Russia | 59.84 | Q |
| 7 | 5 | 6 | Lauren Quigley | Great Britain | 1:00.14 | Q |
| 7 | 6 | 8 | Kirsty Coventry | Zimbabwe | 1:00.14 | Q |
| 9 | 5 | 0 | Eygló Ósk Gústafsdóttir | Iceland | 1:00.25 | Q, NR |
| 10 | 7 | 3 | Etiene Medeiros | Brazil | 1:00.33 | Q |
| 11 | 6 | 6 | Elizabeth Simmonds | Great Britain | 1:00.38 | Q |
| 12 | 4 | 3 | Michelle Coleman | Sweden | 1:00.55 | Q, WD |
| 12 | 6 | 5 | Fu Yuanhui | China | 1:00.55 | Q |
| 14 | 6 | 3 | Chen Jie | China | 1:00.58 | Q |
| 15 | 4 | 8 | Alicja Tchórz | Poland | 1:00.61 | Q, NR |
| 15 | 7 | 2 | Dominique Bouchard | Canada | 1:00.61 | Q |
| 17 | 7 | 6 | Kathleen Baker | United States | 1:00.62 | Q |
| 18 | 5 | 7 | Hilary Caldwell | Canada | 1:00.69 | Q |
| 19 | 4 | 6 | Lisa Graf | Germany | 1:00.71 | |
| 20 | 7 | 7 | Simona Baumrtová | Czech Republic | 1:00.91 | |
| 21 | 6 | 7 | Jenny Mensing | Germany | 1:00.97 | |
| 22 | 5 | 3 | Daria Ustinova | Russia | 1:01.00 | |
| 23 | 5 | 8 | Mimosa Jallow | Finland | 1:01.10 | NR |
| 23 | 6 | 2 | Elena Gemo | Italy | 1:01.10 | |
| 25 | 3 | 5 | Theodora Drakou | Greece | 1:01.15 | NR |
| 26 | 4 | 1 | Bobbie Gichard | New Zealand | 1:01.26 | |
| 27 | 3 | 4 | Stephanie Au | Hong Kong | 1:01.41 | |
| 28 | 7 | 9 | Katarína Listopadová | Slovakia | 1:01.61 | |
| 29 | 7 | 8 | Yekaterina Rudenko | Kazakhstan | 1:01.62 | |
| 29 | 7 | 0 | Sayaka Akase | Japan | 1:01.62 | |
| 31 | 6 | 1 | Duane Da Rocha | Spain | 1:01.63 | |
| 32 | 5 | 2 | Daryna Zevina | Ukraine | 1:01.68 | |
| 33 | 4 | 5 | Mathilde Cini | France | 1:01.77 | |
| 34 | 7 | 1 | Béryl Gastaldello | France | 1:01.91 | |
| 35 | 6 | 9 | Gisela Morales | Guatemala | 1:02.09 | |
| 36 | 4 | 9 | Park Han-byeol | South Korea | 1:02.12 | |
| 37 | 6 | 0 | Margherita Panziera | Italy | 1:02.17 | |
| 38 | 4 | 4 | Andrea Berrino | Argentina | 1:02.37 | |
| 39 | 3 | 7 | Yulduz Kuchkarova | Uzbekistan | 1:02.80 | |
| 40 | 3 | 6 | Ekaterina Avramova | Turkey | 1:02.81 | |
| 41 | 3 | 2 | Jördis Steinegger | Austria | 1:02.99 | |
| 42 | 4 | 0 | Carolina Colorado Henao | Colombia | 1:03.26 | |
| 43 | 5 | 9 | Maaike de Waard | Netherlands | 1:03.81 | |
| 44 | 3 | 3 | Matea Samardžić | Croatia | 1:04.07 | |
| 45 | 3 | 8 | Zanre Oberholzer | Namibia | 1:04.09 | |
| 46 | 2 | 4 | Karen Vilorio | Honduras | 1:04.54 | |
| 47 | 2 | 5 | Inés Remersaro | Uruguay | 1:04.73 | |
| 48 | 3 | 9 | Jessika Cossa | Mozambique | 1:04.96 | |
| 49 | 2 | 3 | Kimiko Raheem | FINA Independent Athletes | 1:05.61 | |
| 50 | 4 | 7 | Lourdes Villasenor | Mexico | 1:05.76 | |
| 51 | 3 | 0 | Roxanne Yu | Philippines | 1:06.10 | |
| 52 | 2 | 6 | Heather Arseth | Mauritius | 1:06.25 | |
| 53 | 3 | 1 | Anak Ratih | Indonesia | 1:06.34 | |
| 54 | 2 | 1 | Lara Butler | Cayman Islands | 1:06.71 | |
| 55 | 4 | 2 | Andrea García | Mexico | 1:06.77 | |
| 56 | 2 | 7 | Talisa Lanoe | Kenya | 1:07.05 | |
| 57 | 2 | 2 | Caylee Watson | Virgin Islands | 1:07.34 | |
| 58 | 1 | 4 | Gaurika Singh | Nepal | 1:08.12 | |
| 59 | 2 | 8 | Evelina Afoa | Samoa | 1:08.43 | |
| 60 | 2 | 0 | Noura Mana | Morocco | 1:10.79 | |
| 61 | 2 | 9 | Ani Poghosyan | Armenia | 1:10.82 | |
| 62 | 1 | 5 | Enkhkhuslen Batbayar | Mongolia | 1:13.52 | |
| 63 | 1 | 3 | Flaka Pruthi | Kosovo | 1:14.29 | |
| 64 | 1 | 6 | Awa Ly N'diaye | Senegal | 1:16.27 | |
| 65 | 1 | 2 | Roylin Akiwo | Palau | 1:20.72 | |
| 66 | 1 | 7 | Nada Al-Bedwawi | United Arab Emirates | 1:35.83 | |

### Semifinals

The semifinals were held on 3 August at 18:24.

#### Semifinal 1

| Rank | Lane | Name | Nationality | Time | Notes |
| 1 | 4 | Madison Wilson | Australia | 59.05 | Q |
| 2 | 5 | Missy Franklin | United States | 59.42 | Q |
| 3 | 3 | Lauren Quigley | Great Britain | 59.71 | Q |
| 4 | 1 | Dominique Bouchard | Canada | 1:00.31 | |
| 5 | 8 | Hilary Caldwell | Canada | 1:00.39 | |
| 6 | 2 | Elizabeth Simmonds | Great Britain | 1:00.40 | |
| 7 | 7 | Chen Jie | China | 1:00.42 | |
| 8 | 6 | Eygló Ósk Gústafsdóttir | Iceland | 1:00.69 | |

#### Semifinal 2

| Rank | Lane | Name | Nationality | Time | Notes |
| 1 | 4 | Emily Seebohm | Australia | 58.56 | Q |
| 2 | 5 | Mie Nielsen | Denmark | 58.84 | Q, NR |
| 3 | 7 | Fu Yuanhui | China | 59.33 | Q |
| 4 | 3 | Anastasia Fesikova | Russia | 59.55 | Q |
| 5 | 8 | Kathleen Baker | United States | 59.63 | Q |
| 6 | 2 | Etiene Medeiros | Brazil | 59.97 | |
| 7 | 6 | Kirsty Coventry | Zimbabwe | 1:00.09 | |
| 8 | 1 | Alicja Tchórz | Poland | 1:01.09 | |

### Final

The final was held on 4 August at 17:40.
| Rank | Lane | Name | Nationality | Time |
| | 4 | Emily Seebohm | Australia | 58.26 |
| | 3 | Madison Wilson | Australia | 58.75 |
| | 5 | Mie Nielsen | Denmark | 58.86 |
| 4 | 6 | Fu Yuanhui | China | 59.02 |
| 5 | 2 | Missy Franklin | United States | 59.40 |
| 6 | 7 | Anastasia Fesikova | Russia | 59.66 |
| 7 | 8 | Lauren Quigley | Great Britain | 59.78 |
| 8 | 1 | Kathleen Baker | United States | 59.99 |