# 2012 FINA World Swimming Championships (25 m) – Women's 50 metre butterfly

The women's 50 metre butterfly event at the 11th FINA World Swimming Championships (25m) took place 13 – 14 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 | Therese Alshammar | Sweden | 24.38 | Singapore | 22 November 2009 |
| Championship record | Therese Alshammar | Sweden | 24.87 | Dubai | 17 December 2010 |
No new records were set during this competition.

## Results
### Heats

| Rank | Heat | Lane | Name | Time | Notes |
| 1 | 9 | 6 | Noemie It-Ting Thomas (CAN) | 25.76 | Q, NR |
| 2 | 9 | 4 | Christine Magnuson (USA) | 25.83 | Q |
| 3 | 7 | 5 | Lu Ying (CHN) | 25.87 | Q |
| 4 | 8 | 4 | Jeanette Ottesen (DEN) | 26.02 | Q |
| 5 | 9 | 5 | Silvia di Pietro (ITA) | 26.05 | Q |
| 6 | 7 | 4 | Aleksandra Gerasimenya (BLR) | 26.06 | Q |
| 7 | 8 | 6 | Anna Dowgiert (POL) | 26.15 | Q, NR |
| 7 | 8 | 2 | Claire Donahue (USA) | 26.15 | Q |
| 9 | 8 | 1 | Vanessa Mohr (RSA) | 26.17 | Q |
| 10 | 8 | 5 | Ilaria Bianchi (ITA) | 26.20 | Q |
| 11 | 9 | 3 | Louise Hansson (SWE) | 26.28 | Q |
| 12 | 3 | 9 | Jiao Liuyang (CHN) | 26.36 | Q |
| 13 | 7 | 3 | Triin Aljand (EST) | 26.38 | Q |
| 14 | 7 | 7 | Aleksandra Urbanczyk (POL) | 26.39 | Q |
| 15 | 8 | 3 | Daynara de Paula (BRA) | 26.43 | Q |
| 16 | 7 | 1 | Brianna Throssell (AUS) | 26.54 | Q |
| 17 | 6 | 6 | Nao Kobayashi (JPN) | 26.58 | |
| 18 | 9 | 7 | İris Rosenberger (TUR) | 26.60 | |
| 19 | 9 | 2 | Daria Tcvetkova (RUS) | 26.62 | |
| 20 | 7 | 2 | Fabienne Nadarajah (AUT) | 26.66 | |
| 21 | 7 | 6 | Sini Kuutamo (FIN) | 26.71 | |
| 22 | 8 | 8 | Sze Hang Yu (HKG) | 26.73 | |
| 23 | 8 | 7 | Katerine Savard (CAN) | 26.74 | |
| 24 | 9 | 8 | Marne Erasmus (RSA) | 26.86 | |
| 25 | 7 | 8 | Carolina Colorado Henao (COL) | 26.90 | |
| 26 | 3 | 8 | Elmira Aigaliyeva (KAZ) | 27.25 | |
| 27 | 8 | 9 | Kona Fujita (JPN) | 27.26 | |
| 28 | 6 | 3 | Sara Oliveira (POR) | 27.39 | |
| 28 | 9 | 1 | Rozaliya Nasretdinova (RUS) | 27.39 | |
| 30 | 7 | 9 | Yang Chin-Kuei (TPE) | 27.44 | |
| 31 | 6 | 5 | Jenjira Srisaard (THA) | 27.46 | |
| 32 | 7 | 0 | Denisa Smolenová (SVK) | 27.49 | |
| 33 | 6 | 4 | Judit Ignacio Sorribes (ESP) | 27.57 | |
| 34 | 9 | 9 | Mylene Ong (SIN) | 27.83 | |
| 35 | 8 | 0 | Danielle Villars (SUI) | 27.90 | |
| 36 | 9 | 0 | Ayse Ezgi Yazici (TUR) | 28.04 | |
| 37 | 5 | 1 | Caroline Pickering Puamau (FIJ) | 28.62 | |
| 38 | 5 | 3 | Marie Meza (CRC) | 28.81 | |
| 39 | 6 | 0 | Zabrina Holder (BAR) | 29.01 | |
| 40 | 6 | 2 | Nguyen Thi Kim Tuyen (VIE) | 29.13 | |
| 41 | 6 | 8 | Dalia Tórrez Zamora (NCA) | 29.34 | |
| 42 | 5 | 4 | Pooja Raghava Alva (IND) | 29.43 | |
| 43 | 1 | 4 | Su Rim Choe (PRK) | 29.46 | |
| 44 | 5 | 2 | Jessica Teixeira Vieira (MOZ) | 29.56 | |
| 45 | 5 | 7 | Sylvia Tanya Brulehner (KEN) | 29.65 | |
| 46 | 6 | 7 | Kiran Khan (PAK) | 29.67 | |
| 47 | 2 | 8 | Maria Jose Ribera (BOL) | 29.73 | |
| 48 | 6 | 1 | Anxhela Kashari (ALB) | 29.79 | |
| 49 | 5 | 0 | Ana Sofia Nobrega (ANG) | 29.80 | |
| 50 | 5 | 9 | Anahit Barseghyan (ARM) | 29.84 | |
| 51 | 5 | 8 | Emily Siobhan Muteti (KEN) | 29.96 | |
| 52 | 4 | 6 | Tegan McCarthy (PNG) | 30.25 | |
| 53 | 4 | 5 | Tieri Erasito (FIJ) | 30.26 | |
| 54 | 6 | 9 | Ann-Marie Hepler (MHL) | 30.35 | |
| 55 | 4 | 4 | Ana Joselina Fortin (HON) | 30.61 | |
| 56 | 3 | 3 | Kathleen Grace Noble (UGA) | 30.80 | |
| 57 | 4 | 8 | Sabine Hazboun (PLE) | 30.81 | |
| 58 | 3 | 0 | Estellah Fils Rabetsara (MAD) | 30.99 | |
| 59 | 4 | 1 | Judith Ilan Meauri (PNG) | 31.00 | |
| 60 | 4 | 3 | Faith Edorodion (NGR) | 31.02 | |
| 61 | 2 | 4 | K. Zin Win (MYA) | 31.32 | |
| 62 | 5 | 6 | Oreoluwa Cherebin (GRN) | 31.37 | |
| 63 | 1 | 3 | Deandra Van der Colff (BOT) | 31.46 | |
| 64 | 4 | 7 | Felicity Passon (SEY) | 31.49 | |
| 65 | 4 | 0 | Afsana Ismayilova (AZE) | 31.62 | |
| 66 | 2 | 6 | Najma Khatun (BAN) | 31.90 | |
| 67 | 4 | 9 | Charissa Sofia Panuve (TGA) | 32.29 | |
| 68 | 2 | 5 | Angela Kendrick (MHL) | 32.59 | |
| 69 | 2 | 2 | Dirngulbai Misech (PLW) | 33.13 | |
| 70 | 3 | 4 | Surennyam Erdenebileg (MGL) | 33.21 | |
| 71 | 3 | 2 | Shne Joachim (VIN) | 33.92 | |
| 72 | 1 | 6 | Alphonsine Agahozo (RWA) | 34.76 | |
| 73 | 3 | 5 | Kibong Tanji (CMR) | 35.03 | |
| 74 | 3 | 6 | Danielle Atoigue (GUM) | 36.29 | |
| 75 | 3 | 7 | Amanda Poppe (GUM) | 36.78 | |
| 76 | 3 | 1 | Aminath Shajan (MDV) | 36.90 | |
| 77 | 2 | 3 | Adzo Kpossi (TOG) | 43.00 | |
| 78 | 2 | 7 | Khahliso Caroline Mpeta (LES) | 46.64 | |
| 79 | 1 | 5 | Daphne Ines Tchamsi (TOG) | 54.54 | |
| | 2 | 0 | Wendy Rodriguez (VEN) | DNS | |
| | 2 | 1 | Jeserik Pinto (VEN) | DNS | |
| | 4 | 2 | Ophelia Swayne (GHA) | DNS | |
| | 5 | 5 | Oriele Espinoza (PER) | DNS | |

### Semifinals

| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 1 | 5 | Jeanette Ottesen | Denmark | 25.62 | Q |
| 2 | 1 | 4 | Christine Magnuson | United States | 25.65 | Q |
| 2 | 2 | 5 | Lu Ying | China | 25.65 | Q |
| 4 | 2 | 4 | Noemie It-Ting Thomas | Canada | 25.76 | Q, NR |
| 5 | 2 | 6 | Anna Dowgiert | Poland | 25.82 | Q, NR |
| 6 | 1 | 6 | Claire Donahue | United States | 25.84 | Q |
| 7 | 1 | 7 | Jiao Liuyang | China | 25.93 | Q |
| 8 | 2 | 1 | Triin Aljand | Estonia | 25.96 | Q |
| 9 | 2 | 7 | Louise Hansson | Sweden | 25.97 | |
| 10 | 1 | 1 | Aleksandra Urbanczyk | Poland | 26.00 | |
| 11 | 1 | 3 | Aleksandra Gerasimenya | Belarus | 26.01 | |
| 11 | 2 | 3 | Silvia di Pietro | Italy | 26.01 | |
| 13 | 1 | 2 | Ilaria Bianchi | Italy | 26.02 | |
| 14 | 2 | 2 | Vanessa Mohr | South Africa | 26.16 | |
| 15 | 1 | 8 | Brianna Throssell | Australia | 26.17 | |
| 16 | 2 | 8 | Daynara de Paula | Brazil | 26.40 | |

### Final

The final was held at 19:43.
| Rank | Lane | Name | Nationality | Time | Notes |
| | 3 | Lu Ying | China | 25.14 | |
| | 1 | Jiao Liuyang | China | 25.23 | |
| | 4 | Jeanette Ottesen | Denmark | 25.55 | |
| 4 | 6 | Noemie It-Ting Thomas | Canada | 25.60 | NR |
| 5 | 5 | Christine Magnuson | United States | 25.70 | |
| 6 | 7 | Claire Donahue | United States | 25.88 | |
| 7 | 2 | Anna Dowgiert | Poland | 25.90 | |
| 8 | 8 | Triin Aljand | Estonia | 26.01 | |