# 2004 World Junior Championships in Athletics – Men's 400 metres hurdles

The men's 400 metres hurdles event at the 2004 World Junior Championships in Athletics was held in Grosseto, Italy, at Stadio Olimpico Carlo Zecchini on 14, 15 and 16 July.

## Medalists

| Gold | Kerron Clement United States |
| Silver | Brandon Johnson United States |
| Bronze | Ibrahim Al-Hamaidi Saudi Arabia |

## Results
### Final

16 July
| Rank | Name | Nationality | Time |
| | Kerron Clement | United States | 48.51 |
| | Brandon Johnson | United States | 48.62 |
| | Ibrahim Al-Hamaidi | Saudi Arabia | 48.94 |
| 4 | Louis van Zyl | South Africa | 49.06 |
| 5 | Yasser Lismet | Cuba | 50.24 |
| 6 | Wouter Le Roux | South Africa | 51.17 |
| 7 | Richard Davenport | United Kingdom | 51.59 |
| 8 | Diego Venâncio | Brazil | 52.07 |

### Semifinals

15 July

#### Semifinal 1

| Rank | Name | Nationality | Time | Notes |
| 1 | Ibrahim Al-Hamaidi | Saudi Arabia | 49.55 | Q |
| 2 | Richard Davenport | United Kingdom | 50.20 | Q |
| 3 | Diego Venâncio | Brazil | 50.85 | Q |
| 4 | Yasser Lismet | Cuba | 50.96 | Q |
| 5 | Víctor Solarte | Venezuela | 51.69 | |
| 6 | Michaël Bultheel | Belgium | 52.21 | |
| 7 | Markino Buckley | Jamaica | 52.89 | |
| | Nicola Cascella | Italy | DQ | IAAF rule 168.7 |

#### Semifinal 2

| Rank | Name | Nationality | Time | Notes |
| 1 | Kerron Clement | United States | 49.01 | Q |
| 2 | Brandon Johnson | United States | 49.78 | Q |
| 3 | Louis van Zyl | South Africa | 50.11 | Q |
| 4 | Wouter Le Roux | South Africa | 50.32 | Q |
| 5 | El Hadj Sethe Mbow | Senegal | 50.68 | |
| 6 | Teemu Linkosaari | Finland | 51.87 | |
| 7 | Bandar Yahya Al-Sharahili | Saudi Arabia | 51.92 | |
| 8 | Go Tanabe | Japan | 52.20 | |

### Heats

14 July

#### Heat 1

| Rank | Name | Nationality | Time | Notes |
| 1 | Yasser Lismet | Cuba | 51.27 | Q |
| 2 | Louis van Zyl | South Africa | 51.30 | Q |
| 3 | Michaël Bultheel | Belgium | 51.46 | Q |
| 4 | Nicola Cascella | Italy | 51.47 | q |
| 5 | Markino Buckley | Jamaica | 52.03 | q |
| 6 | Aleksandr Tishkin | Russia | 52.15 | |
| 7 | Teppei Suzuki | Japan | 52.24 | |
| 8 | Chung Cheng-Kang | Chinese Taipei | 53.66 | |

#### Heat 2

| Rank | Name | Nationality | Time | Notes |
| 1 | Ibrahim Al-Hamaidi | Saudi Arabia | 50.02 | Q |
| 2 | Wouter Le Roux | South Africa | 51.12 | Q |
| 3 | Teemu Linkosaari | Finland | 51.56 | Q |
| 4 | Go Tanabe | Japan | 52.01 | q |
| 5 | Ryan Dinham | United Kingdom | 52.86 | |
| 6 | Balázs Molnár | Hungary | 52.97 | |
| 7 | Josef Robertson | Jamaica | 53.05 | |
| 8 | Fadil Bellaabouss | France | 53.48 | |

#### Heat 3

| Rank | Name | Nationality | Time | Notes |
| 1 | Kerron Clement | United States | 50.10 | Q |
| 2 | Richard Davenport | United Kingdom | 51.08 | Q |
| 3 | El Hadj Sethe Mbow | Senegal | 51.48 | Q |
| 4 | Bandar Yahya Al-Sharahili | Saudi Arabia | 51.63 | q |
| 5 | Florent Joulain | France | 52.74 | |
| 6 | Tuncay Örs | Turkey | 54.27 | |
| 7 | Wang Hao-Yi | Chinese Taipei | 55.26 | |

#### Heat 4

| Rank | Name | Nationality | Time | Notes |
| 1 | Brandon Johnson | United States | 50.11 | Q |
| 2 | Víctor Solarte | Venezuela | 51.96 | Q |
| 3 | Diego Venâncio | Brazil | 52.02 | Q |
| 4 | Ricardo Lima | Portugal | 52.47 | |
| 5 | Manuel García | Puerto Rico | 52.82 | |
| 6 | Yuriy Pelles | Israel | 53.09 | |
| 7 | Milan Kotur | Croatia | 53.28 | |

## Participation

According to an unofficial count, 30 athletes from 22 countries participated in the event.
* Belgium (1)
* Brazil (1)
* Chinese Taipei (2)
* Croatia (1)
* Cuba (1)
* Finland (1)
* France (2)
* Hungary (1)
* Israel (1)
* Italy (1)
* Jamaica (2)
* Japan (2)
* Portugal (1)
* Puerto Rico (1)
* Russia (1)
* Saudi Arabia (2)
* Senegal (1)
* South Africa (2)
* Turkey (1)
* United Kingdom (2)
* United States (2)
* Venezuela (1)