# Athletics at the 2005 Summer Universiade – Men's 400 metres

The men's 400 metres event at the 2005 Summer Universiade was held on 15–17 August in İzmir, Turkey.

## Medalists

| Gold | Silver | Bronze |
| Marvin Essor Jamaica | Dewayne Barrett Jamaica | Yuki Yamaguchi Japan |

## Results
### Heats

| Rank | Heat | Athlete | Nationality | Time | Notes |
| 1 | 5 | Marvin Essor | Jamaica | 46.25 | Q |
| 2 | 5 | Nils Duerinck | Belgium | 46.53 | Q |
| 3 | 7 | Cédric Van Branteghem | Belgium | 46.71 | Q |
| 4 | 4 | Wang Xiaoxu | China | 46.78 | Q |
| 5 | 8 | Tunde Ogbu | Nigeria | 46.95 | Q, PB |
| 6 | 5 | Kazunori Ota | Japan | 46.98 | q |
| 7 | 7 | Nathan Vadeboncoeur | Canada | 47.12 | Q |
| 8 | 9 | Dewayne Barrett | Jamaica | 47.13 | Q |
| 9 | 7 | Mohammad Akefian | Iran | 47.15 | q |
| 10 | 5 | Tim Hawkes | New Zealand | 47.18 | q, SB |
| 11 | 4 | Ehsan Mohajer Shojaei | Iran | 47.24 | Q |
| 12 | 9 | Daniel Dąbrowski | Poland | 47.36 | Q |
| 13 | 4 | Piotr Kędzia | Poland | 47.47 | q |
| 14 | 1 | Luis Ambrósio | Brazil | 47.49 | Q |
| 15 | 9 | Konstantin Svechkar | Russia | 47.50 | q |
| 16 | 8 | Andriy Tverdostup | Ukraine | 47.56 | Q |
| 17 | 1 | Yuki Yamaguchi | Japan | 47.63 | Q |
| 18 | 9 | Cory Innes | New Zealand | 47.64 | q |
| 19 | 9 | Ray Ardill | Canada | 47.67 | |
| 20 | 7 | Ömer Yalçiner | Turkey | 47.90 | |
| 21 | 3 | Tom Coman | Ireland | 47.96 | Q |
| 22 | 1 | Stéphane Borloz | Switzerland | 47.97 | PB |
| 23 | 8 | Félix Martínez | Puerto Rico | 48.00 | |
| 24 | 3 | Boris Khamzin | Kazakhstan | 48.22 | Q |
| 25 | 5 | Jonnie Lowe | Honduras | 48.29 | SB |
| 25 | 6 | Pierre Lavanchy | Switzerland | 48.29 | Q |
| 27 | 6 | Vladislav Frolov | Russia | 48.44 | Q |
| 28 | 3 | Asad Iqbal | Pakistan | 48.57 | SB |
| 29 | 6 | Jukkatip Phocharoen | Thailand | 48.87 | |
| 30 | 3 | Weera Kongsri | Thailand | 48.90 | SB |
| 31 | 4 | Denis Rypakov | Kazakhstan | 48.92 | |
| 32 | 7 | Marco Vinicio Pérez | Costa Rica | 49.13 | |
| 33 | 5 | Francis Ahmed | Nigeria | 49.25 | |
| 34 | 8 | Camilo Quevedo | Guatemala | 49.33 | |
| 34 | 6 | Jacob Fabricius Riis | Denmark | 49.38 | |
| 36 | 2 | Zoltán Borsányi | Hungary | 49.40 | Q |
| 37 | 5 | Avetik Arakelian | Armenia | 49.41 | |
| 38 | 8 | Hamad Al-Badwawi | United Arab Emirates | 49.70 | |
| 39 | 3 | Alex Fan Wai Ho | Hong Kong | 49.92 | |
| 40 | 1 | Julius Kasule | Uganda | 50.53 | |
| 41 | 1 | Mohamed Tamin | Lebanon | 50.58 | |
| 42 | 8 | Timothy Szeto Man Ho | Hong Kong | 51.17 | |
| 43 | 3 | Adam Mohamed El-Hassan | Sudan | 51.36 | |
| 44 | 1 | Ali Muhammad | Pakistan | 51.74 | |
| 45 | 4 | Telguy Djibeng | Chad | 56.53 | |
| 46 | 6 | Maher Tamim | Lebanon | 57.07 | |
| 47 | 2 | Andrew Opata | Uganda | 1:39.99 | Q |
| | 2 | Bobby Young | Liberia | DQ | |

### Semifinals

| Rank | Heat | Athlete | Nationality | Time | Notes |
| 1 | 1 | Marvin Essor | Jamaica | 46.45 | Q |
| 2 | 3 | Yuki Yamaguchi | Japan | 46.50 | Q |
| 3 | 2 | Dewayne Barrett | Jamaica | 46.56 | Q |
| 4 | 1 | Tom Coman | Ireland | 46.64 | Q |
| 4 | 2 | Cédric Van Branteghem | Belgium | 46.64 | Q |
| 6 | 3 | Piotr Kędzia | Poland | 46.71 | Q |
| 7 | 3 | Mohammad Akefian | Iran | 46.73 | q |
| 8 | 2 | Andriy Tverdostup | Ukraine | 46.75 | q |
| 9 | 3 | Nils Duerinck | Belgium | 46.79 | |
| 10 | 2 | Nathan Vadeboncoeur | Canada | 46.85 | |
| 11 | 3 | Wang Xiaoxu | China | 46.93 | |
| 12 | 3 | Zoltán Borsányi | Hungary | 47.09 | |
| 13 | 1 | Daniel Dąbrowski | Poland | 47.12 | |
| 14 | 3 | Tunde Ogbu | Nigeria | 47.31 | |
| 15 | 2 | Pierre Lavanchy | Switzerland | 47.32 | |
| 16 | 1 | Luis Ambrósio | Brazil | 47.43 | |
| 17 | 1 | Konstantin Svechkar | Russia | 47.57 | |
| 18 | 2 | Cory Innes | New Zealand | 47.63 | |
| 19 | 1 | Kazunori Ota | Japan | 47.69 | |
| 20 | 1 | Tim Hawkes | New Zealand | 47.94 | |
| 21 | 3 | Boris Khamzin | Kazakhstan | 48.18 | |
| 22 | 2 | Andrew Opata | Uganda | 50.43 | |
| | 1 | Ehsan Mohajer Shojaei | Iran | DNF | |
| | 2 | Vladislav Frolov | Russia | DNS | |

### Final

| Rank | Athlete | Nationality | Time | Notes |
| | Marvin Essor | Jamaica | 45.99 | |
| | Dewayne Barrett | Jamaica | 46.14 | |
| | Yuki Yamaguchi | Japan | 46.15 | SB |
| 4 | Cédric Van Branteghem | Belgium | 46.17 | |
| 5 | Andriy Tverdostup | Ukraine | 46.55 | |
| 6 | Tom Coman | Ireland | 46.75 | |
| 7 | Piotr Kędzia | Poland | 46.89 | |
| 8 | Mohammad Akefian | Iran | 47.14 | |