| Event: | Men's 400m Freestyle |
| Competition: | 2012 Short Course Worlds |
| Dates: | 14 December (heats and final) |
| Win Value: | 3:39.15 |
| Gold: | Paul Biedermann |
| Goldnoc: | GER |
| Silver: | Hao Yun |
| Silvernoc: | CHN |
| Bronze: | Matthew Stanley |
| Bronzenoc: | NZL |
| Prev: | 2010 |
| Next: | 2014 |
See main article: 2012 FINA World Swimming Championships (25 m).
The men's 400 metre freestyle event at the 11th FINA World Swimming Championships (25m) took place 14 December 2012 at the Sinan Erdem Dome.
In June 2013, Danish swimmer Mads Glæsner was stripped of the bronze medal after testing positive for levomethamphetamine.[1]
Prior to this competition, the existing world and championship records were as follows.
| Name | Nation | Time | Location | Date | |||
|---|---|---|---|---|---|---|---|
| World record | Yannick Agnel | align=left | 3:32.25 | 15 November 2012 | |||
| Championship record | Grant Hackett | align=left | 3:35.01 | 1 April 1999 |
No new records were set during this competition.
| Rank | Heat | Lane | Name | Time | Notes | |
|---|---|---|---|---|---|---|
| 1 | 6 | 4 | 3:41.07 | Q | ||
| 2 | 6 | 2 | 3:41.34 | Q | ||
| 3 | 5 | 5 | 3:41.40 | Q | ||
| 4 | 6 | 3 | 3:41.59 | Q | ||
| 5 | 7 | 8 | 3:41.80 | Q | ||
| 6 | 1 | 7 | 3:42.13 | Q | ||
| 7 | 5 | 4 | 3:42.43 | Q | ||
| 8 | 5 | 3 | 3:42.49 | |||
| 9 | 7 | 0 | 3:42.76 | |||
| 10 | 6 | 5 | 3:42.97 | |||
| 11 | 7 | 3 | 3:43.05 | |||
| 12 | 6 | 6 | 3:43.29 | |||
| 13 | 7 | 6 | 3:43.52 | |||
| 14 | 5 | 7 | 3:43.70 | |||
| 15 | 5 | 2 | 3:43.88 | |||
| 16 | 7 | 5 | 3:44.09 | |||
| 17 | 6 | 9 | 3:44.22 | |||
| 18 | 7 | 7 | 3:44.46 | |||
| 19 | 7 | 2 | 3:44.56 | |||
| 20 | 5 | 0 | 3:45.77 | |||
| 21 | 5 | 6 | 3:46.00 | |||
| 22 | 6 | 1 | 3:47.19 | |||
| 23 | 6 | 8 | 3:47.56 | |||
| 24 | 4 | 2 | 3:47.83 | NR | ||
| 25 | 7 | 9 | 3:48.29 | |||
| 26 | 4 | 4 | 3:48.56 | NR | ||
| 27 | 4 | 5 | 3:48.62 | |||
| 28 | 6 | 7 | 3:48.70 | |||
| 29 | 5 | 1 | 3:49.17 | |||
| 30 | 6 | 0 | 3:49.38 | |||
| 31 | 4 | 7 | 3:49.45 | |||
| 32 | 1 | 4 | 3:49.63 | |||
| 33 | 1 | 1 | 3:49.86 | |||
| 34 | 4 | 3 | 3:51.30 | |||
| 35 | 1 | 2 | 3:51.69 | NR | ||
| 36 | 4 | 9 | 3:54.56 | |||
| 37 | 5 | 9 | 3:54.76 | |||
| 38 | 3 | 3 | 3:56.32 | NR | ||
| 39 | 4 | 6 | 3:56.79 | |||
| 40 | 4 | 0 | 3:57.85 | NR | ||
| 41 | 4 | 8 | 3:59.58 | |||
| 42 | 3 | 0 | 4:00.22 | |||
| 43 | 3 | 2 | 4:00.62 | |||
| 44 | 4 | 1 | 4:01.31 | |||
| 45 | 3 | 6 | 4:01.37 | |||
| 46 | 3 | 4 | 4:02.62 | |||
| 47 | 3 | 5 | 4:02.94 | |||
| 48 | 3 | 8 | 4:06.30 | |||
| 49 | 2 | 6 | 4:10.77 | |||
| 50 | 3 | 7 | 4:11.79 | |||
| 51 | 2 | 4 | 4:12.16 | |||
| 52 | 3 | 1 | 4:12.61 | NR | ||
| 53 | 2 | 5 | 4:15.31 | |||
| 54 | 3 | 9 | 4:17.66 | |||
| 55 | 2 | 3 | 4:18.40 | |||
| 56 | 2 | 2 | 4:23.37 | |||
| 57 | 2 | 1 | 4:26.14 | |||
| 58 | 2 | 7 | 4:31.26 | |||
| 59 | 2 | 9 | 4:37.41 | |||
| 60 | 2 | 0 | 4:37.59 | |||
| 61 | 2 | 8 | 4:46.60 | |||
| 1 | 3 | |||||
| 1 | 5 | |||||
| 1 | 6 | |||||
| 5 | 8 | |||||
| 7 | 1 | |||||
| 7 | 4 |
The final was held at 19:55.[3]
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 6 | 3:39.15 | |||||
| 1 |  | 3:39.48 | ||||
| 2 |  | 3:41.01 | ||||
| 4 | 5 |  | 3:41.29 | |||
| 5 | 8 |  | 3:42.23 | |||
| 6 | 3 |  | 3:42.48 | |||
| 7 | 7 | 3:42.80 | ||||
| 4 |