# Swimming at the 2007 World Aquatics Championships – Men's 400 metre freestyle

The men's 400 metre freestyle at the 2007 World Aquatics Championships took place on 25 March (preliminaries and finals) at Rod Laver Arena in Melbourne, Australia.
On 11 September 2007, the Court of Arbitration for Sport, as part of a retroactive 18-month suspension for an earlier doping infraction, nullified Tunisia's Oussama Mellouli's results from these championships, which affected this event and the men's 800 metre freestyle in particular.

## Records

Prior to the competition, the existing world and championship records were as follows.
| | Name | Nation | Time | Location | Date |
| World record | Ian Thorpe | Australia | 3:40.08 | Manchester | July 30, 2002 |
| Championship record | Ian Thorpe | Australia | 3:40.17 | Fukuoka | July 22, 2001 |
No new world or competition records were set during this competition.

## Results
### Final

| Place | Lane | Name | Nationality | 50m | 100m | 150m | 200m | 250m | 300m | 350m | Time | Notes |
| | 5 | Park Tae-Hwan | South Korea | 26.19 | 55.00 | 1:23.83 | 1:52.87 | 2:21.49 | 2:50.39 | 3:18.24 | 3:44.30 | |
| | 8 | Grant Hackett | Australia | 26.18 | 54.80 | 1:23.27 | 1:52.14 | 2:20.63 | 2:49.44 | 3:17.81 | 3:45.43 | |
| | 3 | Yury Prilukov | Russia | 26.52 | 55.35 | 1:24.16 | 1:52.86 | 2:21.41 | 2:49.94 | 3:17.78 | 3:45.47 | |
| 4 | 4 | Peter Vanderkaay | USA | 26.01 | 54.76 | 1:23.28 | 1:52.51 | 2:21.21 | 2:50.28 | 3:18.83 | 3:46.36 | |
| 5 | 7 | Federico Colbertaldo | Italy | 26.76 | 55.42 | 1:24.29 | 1:53.48 | 2:22.28 | 2:51.36 | 3:19.91 | 3:48.01 | |
| 6 | 2 | Craig Stevens | Australia | 27.04 | 55.87 | 1:24.73 | 1:53.89 | 2:22.99 | 2:51.98 | 3:20.53 | 3:48.26 | |
| 7 | 1 | Sergiy Fesenko | Ukraine | 27.17 | 55.92 | 1:24.95 | 1:54.01 | 2:23.29 | 2:52.25 | 3:20.99 | 3:48.49 | |
| DSQ | 6 | Oussama Mellouli | Tunisia | 26.13 | 54.87 | 1:23.45 | 1:52.46 | 2:20.80 | 2:49.23 | 3:17.47 | 3:45.12 | DSQ |

### Heats

| Rank | Heat : Lane | Name | Nationality | 100m | 200m | 300m | Time | Q |
| 1 | 8 : 5 | Peter Vanderkaay | USA | 00:54.25 | 1:52.26 | 2:49.69 | 3:45.82 | Q |
| 2 | 9 : 4 | Park Tae-Hwan | South Korea | 00:55.51 | 1:53.45 | 2:50.80 | 3:46.24 | Q |
| 3 | 8 : 4 | Yury Prilukov | Russia | 00:55.80 | 1:53.70 | 2:51.00 | 3:46.57 | Q |
| 4 | 9 : 7 | Oussama Mellouli | Tunisia | 00:54.96 | 1:52.21 | 2:49.84 | 3:46.82 | Q |
| 5 | 9 : 5 | Craig Stevens | Australia | 00:55.94 | 1:53.73 | 2:51.41 | 3:46.96 | Q |
| 6 | 8 : 6 | Federico Colbertaldo | Italy | 00:54.90 | 1:52.40 | 2:50.23 | 3:48.13 | Q |
| 7 | 10 : 1 | Sergiy Fesenko | Ukraine | 00:55.28 | 1:53.33 | 2:51.45 | 3:48.50 | Q |
| 8 | 10 : 5 | Grant Hackett | Australia | 00:55.72 | 1:53.80 | 2:52.08 | 3:48.72 | Q |
| 8.5 | 7.5 | | | | | | 3:48.79 | O |
| 9 | 10 : 6 | Przemysław Stańczyk | Poland | 00:55.64 | 1:53.80 | 2:51.69 | 3:48.81 | |
| 10 | 10 : 4 | Klete Keller | USA | 00:56.06 | 1:54.94 | 2:53.25 | 3:49.03 | |
| 11 | 8 : 3 | Zhang Lin | China | 00:54.53 | 1:52.75 | 2:51.12 | 3:49.08 | |
| 12 | 10 : 3 | Massimiliano Rosolino | Italy | 00:54.99 | 1:53.26 | 2:51.76 | 3:49.10 | |
| 13 | 10 : 7 | Takeshi Matsuda | Japan | 00:55.39 | 1:53.63 | 2:51.61 | 3:49.26 | |
| 14 | 10 : 2 | Sébastien Rouault | France | 00:55.26 | 1:52.88 | 2:51.03 | 3:49.46 | |
| 15 | 8 : 1 | Robert Renwick | Great Britain | 00:55.38 | 1:53.22 | 2:51.63 | 3:50.07 | |
| 16 | 10 : 8 | Dominik Koll | Austria | 00:55.61 | 1:54.26 | 2:52.76 | 3:50.40 | |
| 17 | 8 : 2 | Dragoş Coman | Romania | 00:54.85 | 1:52.57 | 2:51.06 | 3:50.53 | |
| 18 | 9 : 3 | Nicolas Rostoucher | France | 00:55.83 | 1:54.07 | 2:52.52 | 3:50.65 | |
| 19 | 7 : 6 | Ryan Cochrane | Canada | 00:56.27 | 1:54.87 | 2:54.16 | 3:50.68 | |
| 20 | 7 : 4 | Luka Turk | Slovenia | 00:55.90 | 1:54.46 | 2:53.14 | 3:50.72 | |
| 21 | 9 : 6 | Mateusz Sawrymowicz | Poland | 00:56.38 | 1:54.69 | 2:53.06 | 3:50.82 | |
| 22 | 9 : 2 | Andrew Hurd | Canada | 00:56.16 | 1:55.01 | 2:53.77 | 3:51.52 | |
| 23 | 9 : 1 | David Brandl | Austria | 00:56.31 | 1:55.19 | 2:53.95 | 3:51.58 | |
| 24 | 8 : 7 | Alexander Selin | Russia | 00:55.52 | 1:53.47 | 2:52.40 | 3:52.32 | |
| 25 | 7 : 7 | Dávid Verrasztó | Hungary | 00:56.73 | 1:55.09 | 2:54.21 | 3:52.88 | |
| 26 | 7 : 8 | Mads Glæsner | Denmark | 00:56.99 | 1:56.57 | 2:55.35 | 3:52.98 | |
| 27 | 9 : 8 | Marcos Rivera Miranda | Spain | 00:55.28 | 1:54.58 | 2:54.51 | 3:53.89 | |
| 28 | 6 : 8 | Yuji Sakurai | Japan | 00:55.56 | 1:55.66 | 2:56.10 | 3:54.52 | |
| 29 | 6 : 2 | Ahmed Mathlouthi | Tunisia | 00:55.89 | 1:56.50 | 2:55.99 | 3:54.70 | |
| 30 | 7 : 3 | Květoslav Svoboda | Czech Republic | 00:55.37 | 1:54.44 | 2:53.60 | 3:54.76 | |
| 31 | 7 : 5 | Armando Negreiros | Brazil | 00:56.55 | 1:55.78 | 2:56.44 | 3:55.77 | |
| 32 | 8 : 8 | Sun Yang | China | 00:56.37 | 1:55.87 | 2:57.38 | 3:56.11 | |
| 33 | 5 : 8 | Fabio Pereira | Portugal | 00:56.73 | 1:56.83 | 2:57.12 | 3:56.46 | |
| 34 | 6 : 6 | Robert Voss | New Zealand | 00:56.27 | 1:56.39 | 2:57.03 | 3:57.55 | |
| 35 | 7 : 1 | Ricardo Monasterio | Venezuela | 00:57.21 | 1:57.75 | 2:58.36 | 3:57.71 | |
| 36 | 5 : 4 | Gard Kvale | Norway | 00:56.88 | 1:57.48 | 2:58.43 | 3:57.98 | |
| 37 | 6 : 3 | Shai Liwnat | Israel | 00:55.82 | 1:56.42 | 2:57.48 | 3:58.53 | |
| 38 | 7 : 2 | Felipe Araujo | Brazil | 00:56.78 | 1:56.91 | 2:57.70 | 3:59.15 | |
| 39 | 6 : 5 | Adriano Niz | Portugal | 00:56.83 | 1:57.53 | 2:59.31 | 3:59.27 | |
| 40 | 4 : 5 | Ryan Arabejo | Philippines | 00:58.77 | 1:59.64 | 2:59.93 | 3:59.88 | |
| 41 | 6 : 4 | Daniel Bego | Malaysia | 00:58.21 | 1:59.66 | 3:00.69 | 3:59.93 | |
| 42 | 6 : 1 | Michael Jack | New Zealand | 00:56.19 | 1:57.02 | 2:58.73 | 3:59.94 | |
| 43 | 5 : 3 | Giancarlo Zolezzi Seoane | Chile | 00:57.26 | 1:58.41 | 2:59.98 | 4:01.03 | |
| 44 | 5 : 6 | Tharnawat Thanakornworakiart | Thailand | 00:58.95 | 2:00.24 | 3:02.14 | 4:02.99 | |
| 45 | 5 : 5 | Caglar Gokbulut | Turkey | 00:59.65 | 2:01.20 | 3:02.91 | 4:04.54 | |
| 45 | 5 : 7 | Salvador Mallat Arcaya | Chile | 00:58.06 | 1:59.96 | 3:02.98 | 4:04.54 | |
| 47 | 5 : 1 | Oscar Jahnsen | Peru | 00:57.55 | 1:59.61 | 3:02.88 | 4:05.00 | |
| 48 | 4 : 4 | Irakli Revishvili | Georgia | 00:59.35 | 2:01.10 | 3:03.77 | 4:05.14 | |
| 49 | 4 : 3 | Rehan Poncha | India | 00:59.27 | 2:01.56 | 3:04.11 | 4:05.21 | |
| 50 | 4 : 8 | Emanuele Nicolini | San Marino | 1:00.47 | 2:02.63 | 3:03.84 | 4:05.35 | |
| 51 | 4 : 1 | Mario Montoya | Costa Rica | 00:58.07 | 2:01.46 | 3:05.58 | 4:07.75 | |
| 52 | 3 : 3 | Pál Joensen | Faroe Islands | 00:59.37 | 2:02.79 | 3:06.75 | 4:08.40 | |
| 53 | 3 : 6 | Zhi Cong Lim | Singapore | 1:00.22 | 2:03.68 | 3:06.87 | 4:09.10 | |
| 54 | 5 : 2 | Micky van der Vaart | Aruba | 00:58.46 | 2:00.74 | 3:04.88 | 4:09.33 | |
| 55 | 4 : 2 | Sebastian Jahnsen | Peru | 00:58.01 | 2:00.56 | 3:05.03 | 4:09.34 | |
| 56 | 3 : 5 | Ibrahim Nazarov | Uzbekistan | 1:00.29 | 2:04.42 | 3:08.80 | 4:11.36 | |
| 57 | 3 : 4 | Timur Irgashev | Uzbekistan | 00:59.70 | 2:04.00 | 3:09.46 | 4:12.24 | |
| 58 | 4 : 6 | Kevin Soow Choy Yeap | Malaysia | 00:58.60 | 2:01.77 | 3:06.96 | 4:12.35 | |
| 59 | 2 : 2 | Wen Hao Joshua Lim | Singapore | 1:02.39 | 2:09.52 | 3:15.59 | 4:17.12 | |
| 60 | 3 : 1 | Neil Agius | Malta | 1:01.32 | 2:06.98 | 3:12.86 | 4:17.39 | |
| 61 | 2 : 4 | Omar Núñez | Nicaragua | 1:00.58 | 2:05.57 | 3:12.02 | 4:18.37 | |
| 62 | 2 : 3 | Juan Francisco Lagos Diaz | Honduras | 1:01.68 | 2:07.95 | 3:14.44 | 4:19.16 | |
| 63 | 3 : 2 | Davor Trnovljakovic | Bosnia and Herzegovina | 1:00.62 | 2:06.20 | 3:13.09 | 4:19.42 | |
| 64 | 3 : 8 | Colin Bensadon | Gibraltar | 1:00.14 | 2:06.09 | 3:13.19 | 4:19.86 | |
| 65 | 4 : 7 | Anas Abuyousuf | Qatar | 1:00.52 | 2:05.20 | 3:12.44 | 4:20.48 | |
| 66 | 2 : 1 | Heimanu Sichan | Tahiti | 1:01.02 | 2:07.94 | 3:16.16 | 4:23.04 | |
| 67 | 2 : 8 | Gael Adam | Mauritius | 1:01.29 | 2:08.89 | 3:17.36 | 4:24.08 | |
| 68 | 2 : 7 | Oliver Quick | Gibraltar | 1:02.70 | 2:11.51 | 3:19.90 | 4:24.78 | |
| 69 | 3 : 7 | Rashid Iunusov | Kyrgyzstan | 1:00.29 | 2:07.11 | 3:17.73 | 4:27.83 | |
| 70 | 2 : 5 | Timur Kartabaev | Kyrgyzstan | 1:02.12 | 2:10.88 | 3:22.07 | 4:32.84 | |
| 71 | 1 : 3 | Eli Ebenezer Wong | Northern Mariana Islands | 1:05.10 | 2:16.70 | 3:28.83 | 4:36.90 | |
| 72 | 2 : 6 | Eros Qama | Albania | 1:03.49 | 2:15.55 | 3:28.40 | 4:43.97 | |
| 73 | 1 : 6 | Cooper Theodore Graf | Northern Mariana Islands | 1:09.20 | 2:25.37 | 3:42.19 | 4:57.26 | |
| 74 | 1 : 1 | Seraj Mouloud | Libya | 1:02.41 | 2:19.23 | 3:42.12 | 5:04.67 | |
| 75 | 1 : 2 | Ibrahim Shameel | Maldives | 1:11.49 | 2:36.98 | 4:04.77 | 5:31.83 | |
| 76 | 1 : 7 | Bernard Blewudzi | Ghana | 1:16.76 | 2:54.64 | 4:39.70 | 6:23.27 | |
| 999 | 1 : 4 | Samson Opuakpo | Nigeria | | | | DNS | |
| 999 | 1 : 5 | Nemune Tebesa | Nigeria | | | | DNS | |
| 999 | 6 : 7 | Mohammed Naeem Masri | Syria | | | | DNS | |