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 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 | Libby Trickett | | 51.01 | Hobart | 10 August 2009 |
| Championship record | Ranomi Kromowidjojo | | 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 | | 53.26 | Q |
| 2 | 9 | 3 | | 53.32 | Q |
| 3 | 9 | 4 | | 53.42 | Q |
| 3 | 10 | 4 | | 53.42 | Q |
| 5 | 9 | 0 | | 53.54 | NR |
| 6 | 11 | 1 | | 53.57 | Q |
| 7 | 11 | 3 | | 53.59 | Q |
| 8 | 10 | 5 | | 53.82 | Q |
| 9 | 10 | 1 | | 53.95 | Q |
| 10 | 9 | 5 | | 53.96 | Q |
| 11 | 1 | 3 | | 54.01 | Q, NR |
| 12 | 11 | 8 | | 54.04 | Q |
| 13 | 10 | 6 | | 54.10 | Q |
| 14 | 9 | 8 | | 54.15 | Q, NR |
| 15 | 11 | 2 | | 54.25 | |
| 16 | 9 | 1 | | 54.27 | Q |
| 17 | 9 | 6 | | 54.42 | Q |
| 18 | 10 | 2 | | 54.56 | Q |
| 18 | 11 | 9 | | 54.56 | |
| 20 | 10 | 3 | | 54.57 | |
| 21 | 10 | 9 | | 54.58 | |
| 22 | 10 | 7 | | 54.60 | |
| 23 | 10 | 8 | | 54.69 | |
| 24 | 11 | 6 | | 54.74 | |
| 25 | 11 | 7 | | 54.97 | |
| 26 | 9 | 2 | | 54.98 | |
| 27 | 11 | 0 | | 55.21 | |
| 28 | 1 | 5 | | 55.34 | |
| 29 | 2 | 7 | | 55.53 | |
| 30 | 8 | 7 | | 55.60 | NR |
| 31 | 8 | 1 | | 55.68 | |
| 31 | 9 | 9 | | 55.68 | |
| 31 | 10 | 0 | | 55.68 | |
| 34 | 8 | 0 | | 55.71 | |
| 35 | 8 | 2 | | 55.76 | |
| 36 | 8 | 9 | | 55.85 | |
| 37 | 8 | 8 | | 55.97 | |
| 38 | 7 | 4 | | 56.06 | |
| 39 | 8 | 5 | | 56.13 | |
| 40 | 8 | 3 | | 56.16 | |
| 41 | 7 | 5 | | 56.19 | |
| 42 | 8 | 4 | | 56.24 | |
| 43 | 8 | 6 | | 56.31 | |
| 44 | 6 | 6 | | 56.75 | NR |
| 45 | 6 | 7 | | 57.13 | |
| 46 | 7 | 7 | | 57.22 | |
| 47 | 5 | 6 | | 57.31 | NR |
| 48 | 6 | 5 | | 57.95 | NR |
| 49 | 7 | 3 | | 58.05 | NR |
| 50 | 7 | 9 | | 58.23 | |
| 51 | 5 | 2 | | 58.33 | |
| 52 | 6 | 8 | | 58.37 | |
| 53 | 6 | 4 | | 58.40 | |
| 54 | 6 | 9 | | 58.53 | |
| 55 | 6 | 2 | | 58.57 | |
| 56 | 7 | 2 | | 58.63 | |
| 57 | 5 | 0 | | 58.68 | |
| 58 | 6 | 3 | | 58.89 | |
| 59 | 6 | 1 | | 58.93 | |
| 60 | 7 | 0 | | 59.00 | |
| 61 | 6 | 0 | | 59.03 | |
| 62 | 7 | 1 | | 59.18 | |
| 63 | 5 | 8 | | 59.28 | |
| 64 | 5 | 4 | | 59.42 | |
| 65 | 5 | 7 | | 59.60 | |
| 66 | 7 | 8 | | 59.96 | |
| 67 | 5 | 1 | | 1:00.02 | |
| 68 | 5 | 5 | | 1:00.16 | |
| 69 | 4 | 0 | | 1:00.24 | |
| 70 | 4 | 7 | | 1:00.44 | |
| 71 | 3 | 4 | | 1:00.51 | |
| 72 | 2 | 9 | | 1:00.71 | |
| 73 | 4 | 1 | | 1:01.09 | |
| 74 | 2 | 0 | | 1:01.73 | |
| 75 | 5 | 3 | | 1:01.81 | |
| 76 | 4 | 6 | | 1:01.93 | |
| 77 | 5 | 9 | | 1:01.95 | |
| 78 | 4 | 5 | | 1:02.15 | |
| 79 | 4 | 9 | | 1:02.19 | |
| 80 | 4 | 2 | | 1:02.21 | |
| 81 | 2 | 8 | | 1:02.56 | |
| 82 | 4 | 8 | | 1:03.38 | |
| 83 | 4 | 4 | | 1:04.04 | |
| 84 | 3 | 5 | | 1:04.36 | |
| 85 | 3 | 1 | | 1:05.23 | |
| 86 | 3 | 6 | | 1:05.29 | |
| 87 | 4 | 3 | | 1:05.54 | |
| 88 | 3 | 2 | | 1:06.61 | |
| 89 | 1 | 4 | | 1:07.24 | |
| 90 | 3 | 0 | | 1:07.92 | |
| 91 | 3 | 8 | | 1:08.75 | |
| 92 | 3 | 3 | | 1:08.85 | |
| 93 | 2 | 4 | | 1:09.83 | |
| 94 | 3 | 9 | | 1:11.22 | |
| 95 | 3 | 7 | | 1:11.84 | |
| 96 | 2 | 5 | | 1:11.85 | |
| 97 | 2 | 3 | | 1:12.33 | |
| 98 | 1 | 2 | | 1:13.64 | |
| 99 | 2 | 1 | | 1:13.74 | |
| 100 | 2 | 6 | | 1:15.13 | |
| 1 | 6 | | | |
| 2 | 2 | | | |
| 7 | 6 | | | |
| 9 | 7 | | | |
| 11 | 4 | | | |
Semifinals
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 2 | 3 | Megan Romano | | 52.86 | Q |
| 2 | 1 | 5 | Britta Steffen | | 53.09 | Q |
| 3 | 1 | 4 | Tang Yi | | 53.13 | Q |
| 4 | 1 | 7 | Angie Bainbridge | | 53.30 | Q |
| 5 | 1 | 3 | Daniela Schreiber | | 53.41 | Q |
| 5 | 2 | 5 | Jessica Hardy | | 53.41 | Q |
| 7 | 2 | 2 | Michelle Coleman | | 53.42 | Q |
| 8 | 2 | 8 | Louise Hansson | | 53.52 | Q |
| 9 | 2 | 4 | Marieke Guehrer | | 53.59 | |
| 10 | 2 | 7 | Haruka Ueda | | 53.76 | |
| 11 | 2 | 6 | Veronika Popova | | 53.86 | |
| 12 | 1 | 1 | Larissa Oliveira | | 53.93 | |
| 13 | 1 | 6 | Alessandra Marchioro | | 54.05 | |
| 14 | 1 | 8 | Chantal Van Landeghem | | 54.16 | |
| 15 | 2 | 1 | Sze Hang Yu | | 54.51 | |
| 16 | 1 | 2 | Nina Rangelova | | 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 | Notes |
| 5 | Britta Steffen | GER | 52.31 | |
| 4 | Megan Romano | USA | 52.48 | |
| 3 | Tang Yi | CHN | 52.73 | |
| 4 | 2 | Daniela Schreiber | GER | 53.05 | |
| 5 | 6 | Angie Bainbridge | AUS | 53.09 | |
| 6 | 1 | Michelle Coleman | SWE | 53.45 | |
| 7 | 7 | Jessica Hardy | USA | 53.52 | |
| 8 | 8 | Louise Hansson | SWE | 53.65 | |
