# 2012 FINA World Swimming Championships (25 m) – Women's 100 metre backstroke

The women's 100 metre backstroke event at the 11th FINA World Swimming Championships (25m) took place 12 – 13 December 2012 at the Sinan Erdem Dome.

## Records

Prior to this competition, the existing world and championship records were as follows.
| | Name | Nation | Time | Location | Date |
| World record | Shiho Sakai | Japan | 55.23 | Berlin | 15 November 2009 |
| Championship record | Natalie Coughlin | United States | 56.08 | Dubai | 16 December 2010 |
No new records were set during this competition.

## Results
### Heats

67 swimmers participated in 7 heats.
| Rank | Heat | Lane | Name | Time | Notes |
| 1 | 6 | 5 | Simona Baumrtová (CZE) | 57.65 | Q |
| 2 | 7 | 4 | Daryna Zevina (UKR) | 57.66 | Q |
| 3 | 5 | 8 | Olivia Smoliga (USA) | 57.75 | Q |
| 4 | 7 | 3 | Mie Nielsen (DEN) | 57.83 | Q |
| 5 | 5 | 5 | Grace Loh (AUS) | 57.89 | Q |
| 6 | 5 | 3 | Georgia Davies (GBR) | 57.94 | Q |
| 7 | 7 | 2 | Arianna Barbieri (ITA) | 58.02 | Q |
| 8 | 7 | 5 | Kira Toussaint (NED) | 58.23 | Q |
| 9 | 5 | 4 | Rachel Goh (AUS) | 58.35 | Q |
| 10 | 6 | 3 | Duane Da Rocha (ESP) | 58.40 | Q |
| 11 | 5 | 9 | Megan Romano (USA) | 58.45 | Q |
| 12 | 6 | 4 | Elizabeth Simmonds (GBR) | 58.48 | Q |
| 13 | 7 | 6 | Zhou Yanxin (CHN) | 58.73 | Q |
| 14 | 5 | 1 | Marie Kamimura (JPN) | 58.75 | Q |
| 15 | 6 | 6 | Michelle Coleman (SWE) | 58.83 | Q |
| 16 | 5 | 6 | Sharon van Rouwendaal (NED) | 58.86 | Q |
| 17 | 5 | 7 | Fernanda González (MEX) | 58.94 | NR |
| 18 | 6 | 2 | Anja Čarman (SLO) | 59.02 | |
| 19 | 4 | 4 | Carolina Colorado Henao (COL) | 59.19 | NR |
| 20 | 5 | 0 | Jessica Ashley-Cooper (RSA) | 59.35 | |
| 21 | 6 | 8 | Melissa Ingram (NZL) | 59.36 | |
| 22 | 6 | 7 | Fabíola Molina (BRA) | 59.37 | |
| 23 | 7 | 9 | Karin Prinsloo (RSA) | 59.68 | |
| 24 | 4 | 3 | Evelyn Verrasztó (HUN) | 59.69 | |
| 25 | 7 | 1 | Jenny Mensing (GER) | 59.76 | |
| 26 | 7 | 0 | Alicja Tchórz (POL) | 59.84 | |
| 27 | 6 | 1 | Polina Lapshina (RUS) | 1:00.10 | |
| 28 | 6 | 0 | Etiene Medeiros (BRA) | 1:00.88 | |
| 29 | 7 | 8 | Noriko Inada (JPN) | 1:00.93 | |
| 30 | 6 | 9 | Fu Yuanhui (CHN) | 1:01.08 | |
| 30 | 7 | 7 | Chantal van Landeghem (CAN) | 1:01.08 | |
| 32 | 4 | 6 | Hanna-Maria Seppälä (FIN) | 1:01.14 | |
| 33 | 1 | 8 | Yekaterina Rudenko (KAZ) | 1:01.16 | |
| 34 | 4 | 5 | Ida Lindborg (SWE) | 1:01.23 | |
| 35 | 4 | 1 | Sarah Rolko (LUX) | 1:01.37 | |
| 36 | 4 | 0 | Birita Debes (FRO) | 1:01.68 | |
| 37 | 4 | 2 | Hazal Sarıkaya (TUR) | 1:01.86 | |
| 38 | 4 | 7 | Halime Zulal Zeren (TUR) | 1:02.40 | |
| 39 | 4 | 8 | Kätlin Sepp (EST) | 1:02.97 | |
| 40 | 3 | 5 | Lynette Ng (SIN) | 1:03.54 | NR |
| 41 | 5 | 2 | Nguyễn Thị Ánh Viên (VIE) | 1:03.63 | |
| 42 | 3 | 7 | Araya Wongvat (THA) | 1:03.78 | |
| 43 | 3 | 2 | Inés Remersaro (URU) | 1:04.32 | |
| 44 | 3 | 9 | Caroline Pickering Puamau (FIJ) | 1:04.37 | |
| 45 | 3 | 6 | Vong Erica Man Wai (MAC) | 1:04.69 | |
| 46 | 3 | 4 | Agata Magner (POL) | 1:04.94 | |
| 47 | 4 | 9 | Tatiana Perstniova (MDA) | 1:05.07 | |
| 48 | 2 | 3 | Mariangel Hidalgo (CRC) | 1:05.43 | |
| 49 | 2 | 5 | Lanoe Talisa Erwan (KEN) | 1:05.64 | NR |
| 50 | 3 | 1 | Anahit Barseghyan (ARM) | 1:05.71 | NR |
| 51 | 3 | 0 | Mónica Ramírez (AND) | 1:05.81 | |
| 52 | 3 | 3 | Yessy Yosaputra (INA) | 1:05.84 | |
| 53 | 2 | 4 | Kuan Weng I (MAC) | 1:06.71 | |
| 54 | 3 | 8 | Kimiko Shihara Raheem (SRI) | 1:07.25 | |
| 55 | 2 | 6 | Naomi Ruele (BOT) | 1:07.59 | |
| 56 | 2 | 2 | Field Anita Zahra (KEN) | 1:08.32 | |
| 57 | 2 | 8 | Nur Hamizah Ahmad (BRU) | 1:09.68 | NR |
| 58 | 2 | 7 | Fabiola Espinoza (NCA) | 1:10.88 | |
| 59 | 2 | 1 | Lianna Catherine Swan (PAK) | 1:11.53 | |
| 60 | 2 | 0 | Monica Saili (SAM) | 1:11.88 | |
| 61 | 1 | 7 | K. Zin Win (MYA) | 1:12.01 | |
| 62 | 2 | 9 | Tegan McCarthy (PNG) | 1:12.61 | |
| 63 | 1 | 4 | Victoria Chentsova (NMI) | 1:14.14 | |
| 64 | 1 | 2 | Domoinanavalona Amboaratiana (MAD) | 1:14.39 | |
| 65 | 1 | 6 | Felicity Passon (SEY) | 1:15.64 | |
| 66 | 1 | 3 | Danielle Atoigue (GUM) | 1:19.86 | |
| 67 | 1 | 5 | Ann Marie Hepler (MHL) | 1:21.89 | |
| | 1 | 0 | Erika Torrellas (VEN) | DNS | |
| | 1 | 1 | Andreina Pinto (VEN) | DNS | |

### Semifinals

16 swimmers participated in 2 heats.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 1 | 5 | Mie Nielsen | Denmark | 57.15 | Q, NR |
| 2 | 2 | 2 | Rachel Goh | Australia | 57.39 | Q |
| 3 | 1 | 3 | Georgia Davies | Great Britain | 57.41 | Q |
| 4 | 2 | 4 | Simona Baumrtová | Czech Republic | 57.62 | Q |
| 4 | 2 | 3 | Grace Loh | Australia | 57.62 | Q |
| 6 | 1 | 4 | Daryna Zevina | Ukraine | 57.66 | Q |
| 7 | 2 | 5 | Olivia Smoliga | United States | 57.74 | Q |
| 8 | 1 | 2 | Duane Da Rocha | Spain | 58.15 | Q |
| 9 | 2 | 1 | Zhou Yanxin | China | 58.21 | |
| 10 | 1 | 7 | Elizabeth Simmonds | Great Britain | 58.34 | |
| 11 | 1 | 6 | Kira Toussaint | Netherlands | 58.36 | |
| 12 | 2 | 7 | Megan Romano | United States | 58.46 | |
| 13 | 2 | 6 | Arianna Barbieri | Italy | 58.50 | |
| 14 | 2 | 8 | Michelle Coleman | Sweden | 58.65 | |
| 15 | 1 | 8 | Sharon van Rouwendaal | Netherlands | 58.89 | |
| 16 | 1 | 1 | Marie Kamimura | Japan | 59.23 | |

### Final

The final was held at 19:59.
| Rank | Lane | Name | Nationality | Time | Notes |
| | 1 | Olivia Smoliga | United States | 56.64 | |
| | 4 | Mie Nielsen | Denmark | 57.07 | NR |
| | 6 | Simona Baumrtová | Czech Republic | 57.18 | NR |
| 4 | 5 | Rachel Goh | Australia | 57.31 | |
| 5 | 3 | Georgia Davies | Great Britain | 57.32 | |
| 6 | 2 | Grace Loh | Australia | 57.34 | |
| 7 | 7 | Daryna Zevina | Ukraine | 57.67 | |
| 8 | 8 | Duane Da Rocha | Spain | 58.14 | |