# 1992 World Junior Championships in Athletics – Men's 400 metres

The men's 400 metres event at the 1992 World Junior Championships in Athletics was held in Seoul, Korea, at Olympic Stadium on 16, 17 and 18 September.

## Medalists

| Gold | Deon Minor United States |
| Silver | Rikard Rasmusson Sweden |
| Bronze | Francis Ogola Uganda |

## Results
### Final

18 September
| Rank | Name | Nationality | Time |
| | Deon Minor | United States | 45.75 |
| | Rikard Rasmusson | Sweden | 46.07 |
| | Francis Ogola | Uganda | 46.16 |
| 4 | Udeme Ekpeyong | Nigeria | 46.54 |
| 5 | Carl Southam | United Kingdom | 46.74 |
| 6 | Emmanuel Okoli | Nigeria | 46.78 |
| 7 | Guy Bullock | United Kingdom | 46.81 |
| 8 | Milton Mallard | United States | 47.46 |

### Semifinals

17 September

#### Semifinal 1

| Rank | Name | Nationality | Time | Notes |
| 1 | Deon Minor | United States | 46.12 | Q |
| 2 | Carl Southam | United Kingdom | 46.59 | Q |
| 3 | Emmanuel Okoli | Nigeria | 46.73 | q |
| 4 | Delon Felix | Grenada | 47.41 | |
| 5 | Declan Stack | Australia | 47.59 | |
| 6 | Carl McPherson | Jamaica | 47.94 | |
| 7 | Hezron Maina | Kenya | 48.27 | |
| 8 | Chen Ming-Yih | Chinese Taipei | 50.75 | |

#### Semifinal 2

| Rank | Name | Nationality | Time | Notes |
| 1 | Rikard Rasmusson | Sweden | 46.46 | Q |
| 2 | Udeme Ekpeyong | Nigeria | 46.62 | Q |
| 3 | Milton Mallard | United States | 46.77 | q |
| 4 | Takayuki Sudo | Japan | 47.11 | |
| 5 | Foday Sillah | Sierra Leone | 47.54 | |
| 6 | Steven Kingston | Australia | 47.84 | |
| 7 | David Anderson | Canada | 48.18 | |
| 8 | Bekele Ergego | Ethiopia | 48.51 | |

#### Semifinal 3

| Rank | Name | Nationality | Time | Notes |
| 1 | Francis Ogola | Uganda | 46.66 | Q |
| 2 | Guy Bullock | United Kingdom | 46.74 | Q |
| 3 | Arthémon Hatungimana | Burundi | 46.78 | |
| 4 | Mark Graham | Canada | 47.16 | |
| 5 | Hiroyuki Hayashi | Japan | 47.50 | |
| 6 | Marcus Rau | Germany | 47.51 | |
| 7 | Michele D'Angelo | Italy | 48.39 | |
| | Greg Haughton | Jamaica | DQ | IAAF rule 162.7 |

### Heats

16 September

#### Heat 1

| Rank | Name | Nationality | Time | Notes |
| 1 | Milton Mallard | United States | 47.35 | Q |
| 2 | Takayuki Sudo | Japan | 47.59 | Q |
| 3 | Rikard Rasmusson | Sweden | 47.60 | Q |
| 4 | Greg Haughton | Jamaica | 47.73 | Q |
| 5 | Michele D'Angelo | Italy | 47.94 | q |
| 6 | Steven Kingston | Australia | 47.98 | q |
| 7 | Nick Cowan | New Zealand | 48.32 | |
| 8 | Ronaldo dos Anjos | Brazil | 48.69 | |

#### Heat 2

| Rank | Name | Nationality | Time | Notes |
| 1 | Arthémon Hatungimana | Burundi | 47.31 | Q |
| 2 | Carl McPherson | Jamaica | 47.35 | Q |
| 3 | Hezron Maina | Kenya | 47.65 | Q |
| 4 | Bekele Ergego | Ethiopia | 48.99 | Q |
| 5 | Eduardo Fernández | Mexico | 49.57 | |
| 6 | Salem Nasser Hawas Jaman | Saudi Arabia | 49.62 | |
| 7 | Sanderlei Parrela | Brazil | 49.64 | |

#### Heat 3

| Rank | Name | Nationality | Time | Notes |
| 1 | Deon Minor | United States | 46.63 | Q |
| 2 | Carl Southam | United Kingdom | 47.05 | Q |
| 3 | Emmanuel Okoli | Nigeria | 47.26 | Q |
| 4 | Foday Sillah | Sierra Leone | 47.80 | Q |
| 5 | Chen Ming-Yih | Chinese Taipei | 48.30 | q |
| 6 | Lee Un-Hak | South Korea | 48.59 | |
| 7 | Shaun Farrell | New Zealand | 48.68 | |

#### Heat 4

| Rank | Name | Nationality | Time | Notes |
| 1 | Udeme Ekpeyong | Nigeria | 47.05 | Q |
| 2 | Mark Graham | Canada | 47.61 | Q |
| 3 | Hiroyuki Hayashi | Japan | 47.81 | Q |
| 4 | Delon Felix | Grenada | 48.02 | Q |
| 5 | Julian Voelkel | Germany | 48.39 | |
| 6 | Simon Kipkemboi | Kenya | 49.02 | |

#### Heat 5

| Rank | Name | Nationality | Time | Notes |
| 1 | Francis Ogola | Uganda | 47.22 | Q |
| 2 | Marcus Rau | Germany | 47.62 | Q |
| 3 | David Anderson | Canada | 47.68 | Q |
| 4 | Declan Stack | Australia | 48.07 | Q |
| 5 | Guy Bullock | United Kingdom | 48.27 | q |
| 6 | Masoud Al-Rahman | Qatar | 48.40 | |
| 7 | Mariusz Obarek | Poland | 48.92 | |

## Participation

According to an unofficial count, 35 athletes from 24 countries participated in the event.
* Australia (2)
* Brazil (2)
* Burundi (1)
* Canada (2)
* Chinese Taipei (1)
* Ethiopia (1)
* Germany (2)
* Grenada (1)
* Italy (1)
* Jamaica (2)
* Japan (2)
* Kenya (2)
* Mexico (1)
* New Zealand (2)
* Nigeria (2)
* Poland (1)
* Qatar (1)
* Saudi Arabia (1)
* Sierra Leone (1)
* South Korea (1)
* Sweden (1)
* Uganda (1)
* United Kingdom (2)
* United States (2)