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

The women's 100 metre freestyle event at the 11th FINA World Swimming Championships (25m) took place December 13-14, 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 | Libby Trickett | Australia | 51.01 | Hobart | 10 August 2009 |
| Championship record | Ranomi Kromowidjojo | Netherlands | 51.44 | Dubai | 17 December 2010 |
No new records were set during this competition.

## Results
### Heats

| Rank | Heat | Lane | Name | Time | Notes |
| 1 | 11 | 5 | Marieke Guehrer (AUS) | 53.26 | Q |
| 2 | 9 | 3 | Tang Yi (CHN) | 53.32 | Q |
| 3 | 9 | 4 | Jessica Hardy (USA) | 53.42 | Q |
| 3 | 10 | 4 | Britta Steffen (GER) | 53.42 | Q |
| 5 | 9 | 0 | Rūta Meilutytė (LTU) | 53.54 | NR |
| 6 | 11 | 1 | Megan Romano (USA) | 53.57 | Q |
| 7 | 11 | 3 | Daniela Schreiber (GER) | 53.59 | Q |
| 8 | 10 | 5 | Veronika Popova (RUS) | 53.82 | Q |
| 9 | 10 | 1 | Alessandra Marchioro (BRA) | 53.95 | Q |
| 10 | 9 | 5 | Michelle Coleman (SWE) | 53.96 | Q |
| 11 | 1 | 3 | Nina Rangelova (BUL) | 54.01 | Q, NR |
| 12 | 11 | 8 | Haruka Ueda (JPN) | 54.04 | Q |
| 13 | 10 | 6 | Angie Bainbridge (AUS) | 54.10 | Q |
| 14 | 9 | 8 | Sze Hang Yu (HKG) | 54.15 | Q, NR |
| 15 | 11 | 2 | Melanie Costa (ESP) | 54.25 | |
| 16 | 9 | 1 | Larissa Oliveira (BRA) | 54.27 | Q |
| 17 | 9 | 6 | Louise Hansson (SWE) | 54.42 | Q |
| 18 | 10 | 2 | Chantal van Landeghem (CAN) | 54.56 | Q |
| 18 | 11 | 9 | Eszter Dara (HUN) | 54.56 | |
| 20 | 10 | 3 | Hanna-Maria Seppälä (FIN) | 54.57 | |
| 21 | 10 | 9 | Miki Uchida (JPN) | 54.58 | |
| 22 | 10 | 7 | Heather MacLean (CAN) | 54.60 | |
| 23 | 10 | 8 | Qiu Yuhan (CHN) | 54.69 | |
| 24 | 11 | 6 | Pernille Blume (DEN) | 54.74 | |
| 25 | 11 | 7 | Rebecca Turner (GBR) | 54.97 | |
| 26 | 9 | 2 | Burcu Dolunay (TUR) | 54.98 | |
| 27 | 11 | 0 | Carolina Colorado Henao (COL) | 55.21 | |
| 28 | 1 | 5 | Alice Mizzau (ITA) | 55.34 | |
| 29 | 2 | 7 | Elmira Aigaliyeva (KAZ) | 55.53 | |
| 30 | 8 | 7 | Julie Meynen (LUX) | 55.60 | NR |
| 31 | 8 | 1 | Lehesta Kemp (RSA) | 55.68 | |
| 31 | 9 | 9 | Mylene Ong (SIN) | 55.68 | |
| 31 | 10 | 0 | Anna Santamans (FRA) | 55.68 | |
| 34 | 8 | 0 | Yang Chin-Kuei (TPE) | 55.71 | |
| 35 | 8 | 2 | Nastja Govejšek (SLO) | 55.76 | |
| 36 | 8 | 9 | Jessica Camposano (COL) | 55.85 | |
| 37 | 8 | 8 | Miroslava Syllabová (SVK) | 55.97 | |
| 38 | 7 | 4 | Rozaliya Nasretdinova (RUS) | 56.06 | |
| 39 | 8 | 5 | Urša Bežan (SLO) | 56.13 | |
| 40 | 8 | 3 | Amanda Lim (SIN) | 56.16 | |
| 41 | 7 | 5 | Esra Kubra Kacmaz (TUR) | 56.19 | |
| 42 | 8 | 4 | Danielle Villars (SUI) | 56.24 | |
| 43 | 8 | 6 | Fernanda González (MEX) | 56.31 | |
| 44 | 6 | 6 | Anastasia Bogdanovski (MKD) | 56.75 | NR |
| 45 | 6 | 7 | Moira Fraser (ZIM) | 57.13 | |
| 46 | 7 | 7 | Allyson Roxanne Ponson (ARU) | 57.22 | |
| 47 | 5 | 6 | Karen Torrez (BOL) | 57.31 | NR |
| 48 | 6 | 5 | Christine Briedenhann (NAM) | 57.95 | NR |
| 49 | 7 | 3 | Nicola Muscat (MLT) | 58.05 | NR |
| 50 | 7 | 9 | Birita Debes (FRO) | 58.23 | |
| 51 | 5 | 2 | Lei On Kei (MAC) | 58.33 | |
| 52 | 6 | 8 | Zabrina Holder (BAR) | 58.37 | |
| 53 | 6 | 4 | Jessica Vieira (MOZ) | 58.40 | |
| 54 | 6 | 9 | Maria Lopez Nery Huerta (PAR) | 58.53 | |
| 55 | 6 | 2 | Olivia Planteau de Maroussem (MRI) | 58.57 | |
| 56 | 7 | 2 | Andrea Cedrón (PER) | 58.63 | |
| 57 | 5 | 0 | Sylvia Tanya Brulehner (KEN) | 58.68 | |
| 58 | 6 | 3 | Isabel Riquelme (CHI) | 58.89 | |
| 59 | 6 | 1 | Monika Vasilyan (ARM) | 58.93 | |
| 60 | 7 | 0 | Jade Howard (ZIM) | 59.00 | |
| 61 | 6 | 0 | Tan Chi Yan (MAC) | 59.03 | |
| 62 | 7 | 1 | Machiko Suharmee Raheem (SRI) | 59.18 | |
| 63 | 5 | 8 | Ana Sofia Nobrega (ANG) | 59.28 | |
| 64 | 5 | 4 | Marie Meza (CRC) | 59.42 | |
| 65 | 5 | 7 | Mónica Ramírez (AND) | 59.60 | |
| 66 | 7 | 8 | Jessica Cattaneo (PER) | 59.96 | |
| 67 | 5 | 1 | Ana Joselina Fortin (HON) | 1:00.02 | |
| 68 | 5 | 5 | Sariyah Sherry (BAR) | 1:00.16 | |
| 69 | 4 | 0 | Judith Ilan Meauri (PNG) | 1:00.24 | |
| 70 | 4 | 7 | Maria Jose Ribera (BOL) | 1:00.44 | |
| 71 | 3 | 4 | Naomi Ruele (BOT) | 1:00.51 | |
| 72 | 2 | 9 | Zamantha Hoss (PAN) | 1:00.71 | |
| 73 | 4 | 1 | Monica Saili (SAM) | 1:01.09 | |
| 74 | 2 | 0 | Estellah Fils Rabetsara (MAD) | 1:01.73 | |
| 75 | 5 | 3 | Jayaveena Arcot Vijaykumar (IND) | 1:01.81 | |
| 76 | 4 | 6 | Emily Siobhan Muteti (KEN) | 1:01.93 | |
| 77 | 5 | 9 | Fabiola Espinoza Herrera (NCA) | 1:01.95 | |
| 78 | 4 | 5 | Nathalie Sanchez Hernandez (ESA) | 1:02.15 | |
| 79 | 4 | 9 | Aurelie Fanchette (SEY) | 1:02.19 | |
| 80 | 4 | 2 | Tieri Erasito (FIJ) | 1:02.21 | |
| 81 | 2 | 8 | Thet Ei Ei (MYA) | 1:02.56 | |
| 82 | 4 | 8 | Barbara Vali-Skelton (PNG) | 1:03.38 | |
| 83 | 4 | 4 | Ann Marie Hepler (MHL) | 1:04.04 | |
| 84 | 3 | 5 | Celeste Brown (COK) | 1:04.36 | |
| 85 | 3 | 1 | Felicity Passon (SEY) | 1:05.23 | |
| 86 | 3 | 6 | Charissa Sofia Panuve (TGA) | 1:05.29 | |
| 87 | 4 | 3 | Danielle Atoigue (GUM) | 1:05.54 | |
| 88 | 3 | 2 | Amanda Poppe (GUM) | 1:06.61 | |
| 89 | 1 | 4 | Dirngulbai Misech (PLW) | 1:07.24 | |
| 90 | 3 | 0 | Keyik Veliyeva (TKM) | 1:07.92 | |
| 91 | 3 | 8 | Angela Kendrick (MHL) | 1:08.75 | |
| 92 | 3 | 3 | Mahnoor Maqsood (PAK) | 1:08.85 | |
| 93 | 2 | 4 | Aminath Shajan (MDV) | 1:09.83 | |
| 94 | 3 | 9 | Shreya Dhital (NEP) | 1:11.22 | |
| 95 | 3 | 7 | Merjen Saryyeva (TKM) | 1:11.84 | |
| 96 | 2 | 5 | Shne Joachim (VIN) | 1:11.85 | |
| 97 | 2 | 3 | Sara Al Flaij (BHR) | 1:12.33 | |
| 98 | 1 | 2 | Fatoumata Samassékou (MLI) | 1:13.64 | |
| 99 | 2 | 1 | Roylin Melatik Akiwo (PLW) | 1:13.74 | |
| 100 | 2 | 6 | Elsie Uwamahoro (BDI) | 1:15.13 | |
| | 1 | 6 | Wendy Rodriguez (VEN) | DNS | |
| | 2 | 2 | Nazlati Mohamed Andhumdine (COM) | DNS | |
| | 7 | 6 | Karin Prinsloo (RSA) | DNS | |
| | 9 | 7 | Mie Nielsen (DEN) | DNS | |
| | 11 | 4 | Francesca Halsall (GBR) | DNS | |

### Semifinals

| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 2 | 3 | Megan Romano | United States | 52.86 | Q |
| 2 | 1 | 5 | Britta Steffen | Germany | 53.09 | Q |
| 3 | 1 | 4 | Tang Yi | China | 53.13 | Q |
| 4 | 1 | 7 | Angie Bainbridge | Australia | 53.30 | Q |
| 5 | 1 | 3 | Daniela Schreiber | Germany | 53.41 | Q |
| 5 | 2 | 5 | Jessica Hardy | United States | 53.41 | Q |
| 7 | 2 | 2 | Michelle Coleman | Sweden | 53.42 | Q |
| 8 | 2 | 8 | Louise Hansson | Sweden | 53.52 | Q |
| 9 | 2 | 4 | Marieke Guehrer | Australia | 53.59 | |
| 10 | 2 | 7 | Haruka Ueda | Japan | 53.76 | |
| 11 | 2 | 6 | Veronika Popova | Russia | 53.86 | |
| 12 | 1 | 1 | Larissa Oliveira | Brazil | 53.93 | |
| 13 | 1 | 6 | Alessandra Marchioro | Brazil | 54.05 | |
| 14 | 1 | 8 | Chantal Van Landeghem | Canada | 54.16 | |
| 15 | 2 | 1 | Sze Hang Yu | Hong Kong | 54.51 | |
| 16 | 1 | 2 | Nina Rangelova | Bulgaria | 54.53 | |
* Rūta Meilutytė of Lithuania withdrew because of too tight schedule.

### Final

The final was held at 19:09.
| Rank | Lane | Name | Nationality | Time |
| | 5 | Britta Steffen | Germany | 52.31 |
| | 4 | Megan Romano | United States | 52.48 |
| | 3 | Tang Yi | China | 52.73 |
| 4 | 2 | Daniela Schreiber | Germany | 53.05 |
| 5 | 6 | Angie Bainbridge | Australia | 53.09 |
| 6 | 1 | Michelle Coleman | Sweden | 53.45 |
| 7 | 7 | Jessica Hardy | United States | 53.52 |
| 8 | 8 | Louise Hansson | Sweden | 53.65 |