2012 FINA World Swimming Championships (25 m) – Women's 400 metre freestyle
The women's 400 metre freestyle event at the 11th FINA World Swimming Championships took place 14 December 2012 at the Sinan Erdem Dome.Records
Prior to this competition, the existing world and championship records were as follows.
No new records were set during this competition.Results
Heats
| Rank | Heat | Lane | Name | Time | Notes |
| 1 | 3 | 5 | | 4:03.49 | Q |
| 2 | 4 | 4 | | 4:04.16 | Q |
| 3 | 4 | 5 | | 4:04.37 | Q |
| 4 | 3 | 4 | | 4:04.68 | Q |
| 5 | 5 | 3 | | 4:04.83 | Q |
| 6 | 3 | 3 | | 4:04.94 | Q |
| 7 | 4 | 3 | | 4:05.04 | Q |
| 8 | 1 | 3 | | 4:05.11 | Q |
| 9 | 1 | 4 | | 4:05.13 | |
| 10 | 3 | 6 | | 4:05.55 | |
| 11 | 5 | 4 | | 4:05.67 | |
| 12 | 5 | 5 | | 4:05.98 | |
| 13 | 5 | 6 | | 4:06.38 | |
| 14 | 1 | 5 | | 4:06.83 | |
| 15 | 5 | 0 | | 4:07.46 | |
| 16 | 3 | 2 | | 4:07.72 | |
| 17 | 4 | 8 | | 4:08.64 | NR |
| 18 | 4 | 1 | | 4:09.53 | |
| 19 | 3 | 7 | | 4:10.08 | |
| 20 | 3 | 1 | | 4:10.78 | |
| 21 | 4 | 2 | | 4:11.21 | |
| 22 | 5 | 7 | | 4:12.74 | |
| 23 | 4 | 7 | | 4:12.99 | |
| 24 | 4 | 6 | | 4:13.49 | |
| 25 | 5 | 8 | | 4:15.37 | |
| 26 | 3 | 8 | | 4:16.78 | |
| 27 | 2 | 8 | | 4:20.78 | NR |
| 28 | 4 | 0 | | 4:23.87 | |
| 29 | 3 | 0 | | 4:25.30 | |
| 30 | 2 | 3 | | 4:25.70 | NR |
| 31 | 5 | 9 | | 4:29.51 | NR |
| 32 | 4 | 9 | | 4:31.34 | |
| 33 | 3 | 9 | | 4:36.10 | |
| 34 | 2 | 5 | | 4:37.32 | |
| 35 | 2 | 4 | | 4:37.33 | |
| 36 | 2 | 2 | | 4:45.17 | |
| 37 | 2 | 6 | | 4:56.66 | |
| 38 | 2 | 7 | | 5:15.87 | |
| 39 | 2 | 1 | | 5:33.66 | |
| 5 | 1 | | | |
| 5 | 2 | | | |
Final
The final was held at 20:25.
| Rank | Lane | Name | Nationality | Time | Notes |
| 3 | Melanie Costa | ESP | 4:01.18 | |
| 4 | Chloe Sutton | USA | 4:01.20 | |
| 6 | Lauren Boyle | NZL | 4:01.24 | NR |
| 4 | 5 | Elena Sokolova | RUS | 4:01.49 | NR |
| 5 | 8 | Jazmin Carlin | GBR | 4:02.45 | |
| 6 | 2 | Angie Bainbridge | AUS | 4:04.07 | |
| 7 | 1 | Zhou Lili | CHN | 4:04.87 | |
| 8 | 7 | Erika Villaécija García | ESP | 4:05.78 | |
