2007 World Championships in Athletics – Men's 400 metres hurdles
The men's 400 metres hurdles at the 2007 World Championships in Athletics was held at the Nagai Stadium on 25, 26 and 28 August.
Medalists
Records
Prior to the competition, the following records were as follows.| World record | 46.78 | Barcelona, Spain | 6 August 1992 | |
| Championship record | 47.18 | Stuttgart, Germany | 19 August 1993 | |
| World leading | 47.72 | Indianapolis, United States | 23 June 2007 | |
| African record | 47.10 | Zürich, Switzerland | 7 August 1991 | |
| Asian record | 47.53 | Sydney, Australia | 27 September 2000 | |
| North American record | 46.78 | Barcelona, Spain | 6 August 1992 | |
| South American record | 47.84 | Helsinki, Finland | 7 August 2005 | |
| European record | 47.37 | Lausanne, Switzerland | 5 July 1995 | |
| Oceanian record | 48.28 | Atlanta, United States | 31 July 1996 |
Schedule
Results
Heats
Qualification: First 4 in each heat and the next 4 fastest advance to the [|semifinals].| Rank | Heat | Name | Nationality | Time | Notes |
| 5 | Félix Sánchez | 48.70 | Q, SB | ||
| 5 | Bershawn Jackson | 48.87 | Q | ||
| 3 | Danny McFarlane | 48.91 | Q | ||
| 5 | Kenji Narisako | 48.92 | Q, SB | ||
| 4 | Adam Kunkel | 49.03 | Q | ||
| 3 | Kerron Clement | 49.07 | Q | ||
| 3 | Javier Culson | 49.09 | Q | ||
| 4 | Periklis Iakovakis | 49.10 | Q | ||
| 4 | Pieter de Villiers | 49.24 | Q | ||
| 10 | 5 | Isa Phillips | 49.38 | Q | |
| 11 | 4 | Fadil Bellaabouss | 49.51 | Q | |
| 12 | 2 | James Carter | 49.52 | Q | |
| 13 | 5 | Ibrahima Maïga | 49.55 | q | |
| 14 | 4 | Jonathan Williams | 49.61 | q | |
| 15 | 5 | Joseph Abraham | 49.64 | q | |
| 16 | 1 | Derrick Williams | 49.65 | Q | |
| 17 | 1 | Marek Plawgo | 49.66 | Q | |
| 17 | 1 | Meng Yan | 49.66 | Q | |
| 17 | 3 | Edivaldo Monteiro | 49.66 | Q | |
| 17 | 3 | Aleksandr Derevyagin | 49.66 | q | |
| 21 | 2 | Bayano Kamani | 49.67 | Q | |
| 21 | 3 | Dai Tamesue | 49.67 | ||
| 23 | 1 | L. J. van Zyl | 49.71 | ||
| 24 | 2 | Gianni Carabelli | 49.81 | Q | |
| 25 | 2 | Yevgeniy Meleshenko | 49.94 | Q | |
| 26 | 3 | Dale Garland | 49.98 | ||
| 27 | 2 | Kurt Couto | 50.06 | ||
| 28 | 1 | Raphael Fernandes | 50.33 | ||
| 29 | 2 | Masahira Yoshikata | 50.59 | ||
| 30 | 5 | José María Romera | 50.82 | ||
| 31 | 5 | Nawaz Haq | 51.72 | PB | |
| 32 | 1 | Allan Ayala Acevedo | 52.26 | ||
| 33 | 4 | Mowen Boino | 52.45 | ||
| 34 | 1 | Jonnie Lowe | 52.66 | ||
| 1 | Naman Keïta | DSQ | |||
| 2 | Alwyn Myburgh | DNF | |||
| 4 | Markino Buckley | DNF | |||
| 4 | Ali Obaid Shirook | DNS |
Semifinals
Qualification: First 2 in each semifinal and the next 2 fastest advance to the [|final].| Rank | Heat | Name | Nationality | Time | Notes |
| 1 | Marek Plawgo | 48.18 | Q, SB | ||
| 1 | James Carter | 48.30 | Q | ||
| 1 | Danny McFarlane | 48.32 | q, SB | ||
| 2 | Félix Sánchez | 48.35 | Q, SB | ||
| 1 | Derrick Williams | 48.43 | q | ||
| 1 | Kenji Narisako | 48.44 | SB | ||
| 2 | Periklis Iakovakis | 48.44 | Q | ||
| 3 | Kerron Clement | 48.60 | Q | ||
| 3 | Adam Kunkel | 48.66 | Q | ||
| 10 | 2 | Bershawn Jackson | 48.95 | ||
| 11 | 2 | Aleksandr Derevyagin | 49.11 | PB | |
| 12 | 3 | Bayano Kamani | 49.13 | ||
| 13 | 1 | Fadil Bellaabouss | 49.17 | PB | |
| 14 | 2 | Edivaldo Monteiro | 49.31 | SB | |
| 15 | 2 | Pieter de Villiers | 49.37 | ||
| 16 | 3 | Isa Phillips | 49.47 | ||
| 17 | 1 | Joseph Abraham | 49.51 | NR | |
| 18 | 1 | Yevgeniy Meleshenko | 49.56 | SB | |
| 19 | 2 | Javier Culson | 49.64 | ||
| 20 | 2 | Meng Yan | 49.70 | ||
| 21 | 3 | Jonathan Williams | 49.77 | ||
| 22 | 3 | Gianni Carabelli | 50.35 | ||
| 23 | 3 | Ibrahima Maïga | 51.24 | ||
| 3 | Naman Keïta | DSQ |