| Event: | Men's 400 metres hurdles |
| Competition: | 2007 World Championships |
| Venue: | Nagai Stadium |
| Dates: | 25 August (heats) 26 August (semifinals) 28 August (final) |
| Competitors: | 37 |
| Win Value: | 47.61 |
| Gold: | Kerron Clement |
| Silver: | Félix Sánchez |
| Bronze: | Marek Plawgo |
| Prev: | 2005 |
| Next: | 2009 |
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.
| width=200 bgcolor=gold | Gold | width=200 bgcolor=silver | Silver | width=200 bgcolor=CC9966 | Bronze |
| Kerron Clement | Félix Sánchez | Marek Plawgo |
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 |
| Date | Time | Round | |
|---|---|---|---|
| August 25, 2007 | 20:45 | Heats | |
| August 26, 2007 | 21:45 | Semifinals | |
| August 28, 2007 | 22:20 | Final |
Qualification: First 4 in each heat (Q) and the next 4 fastest (q) advance to the semifinals.
| Rank | Heat | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 5 | 48.70 | Q, SB | ||||
| 5 | 48.87 | Q | ||||
| 3 | 48.91 | Q | ||||
| 5 | 48.92 | Q, SB | ||||
| 4 | 49.03 | Q | ||||
| 3 | 49.07 | Q | ||||
| 3 | 49.09 | Q | ||||
| 4 | 49.10 | Q | ||||
| 4 | 49.24 | Q | ||||
| 10 | 5 | 49.38 | Q | |||
| 11 | 4 | 49.51 | Q | |||
| 12 | 2 | 49.52 | Q | |||
| 13 | 5 | 49.55 | q | |||
| 14 | 4 | 49.61 | q | |||
| 15 | 5 | 49.64 | q | |||
| 16 | 1 | 49.65 | Q | |||
| 17 | 1 | 49.66 | Q | |||
| 17 | 1 | 49.66 | Q | |||
| 17 | 3 | 49.66 | Q | |||
| 17 | 3 | 49.66 | q | |||
| 21 | 2 | 49.67 | Q | |||
| 21 | 3 | 49.67 | ||||
| 23 | 1 | 49.71 | ||||
| 24 | 2 | 49.81 | Q | |||
| 25 | 2 | 49.94 | Q | |||
| 26 | 3 | 49.98 | ||||
| 27 | 2 | 50.06 | ||||
| 28 | 1 | 50.33 | ||||
| 29 | 2 | 50.59 | ||||
| 30 | 5 | 50.82 | ||||
| 31 | 5 | 51.72 | PB | |||
| 32 | 1 | 52.26 | ||||
| 33 | 4 | 52.45 | ||||
| 34 | 1 | 52.66 | ||||
| 1 | DSQ | |||||
| 2 | DNF | |||||
| 4 | DNF | |||||
| 4 | DNS |
Qualification: First 2 in each semifinal (Q) and the next 2 fastest (q) advance to the final.
| Rank | Heat | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 1 | 48.18 | Q, SB | ||||
| 1 | 48.30 | Q | ||||
| 1 | 48.32 | q, SB | ||||
| 2 | 48.35 | Q, SB | ||||
| 1 | 48.43 | q | ||||
| 1 | 48.44 | SB | ||||
| 2 | 48.44 | Q | ||||
| 3 | 48.60 | Q | ||||
| 3 | 48.66 | Q | ||||
| 10 | 2 | 48.95 | ||||
| 11 | 2 | 49.11 | PB | |||
| 12 | 3 | 49.13 | ||||
| 13 | 1 | 49.17 | PB | |||
| 14 | 2 | 49.31 | SB | |||
| 15 | 2 | 49.37 | ||||
| 16 | 3 | 49.47 | ||||
| 17 | 1 | 49.51 | NR | |||
| 18 | 1 | 49.56 | SB | |||
| 19 | 2 | 49.64 | ||||
| 20 | 2 | 49.70 | ||||
| 21 | 3 | 49.77 | ||||
| 22 | 3 | 50.35 | ||||
| 23 | 3 | 51.24 | ||||
| 3 | DSQ |
| Rank | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|
| 47.61 | WL | ||||
| 48.01 | SB | ||||
| 48.12 | NR | ||||
| 48.40 | |||||
| 48.59 | |||||
| 49.25 | |||||
| 52.97 | |||||
| DNF |