Athletics at the 1955 Summer International University Sports Week – Men's 400 metres
# Athletics at the 1955 Summer International University Sports Week – Men's 400 metres

The men's 400 metres event at the 1955 International University Sports Week was held in San Sebastián on 12, 13 and 14 August 1955.

## Medalists

| Gold | Silver | Bronze |
| - | - | - |
| Grant Scruggs United States | Jean-Jacques Hegg Switzerland | John Wrighton Great Britain |

## Results

### Heats

| Rank | Heat | Athlete | Nationality | Time | Notes |
| - | - | - | - | - | - |
| 1 | 1 | Grant Scruggs | United States | 50.5 | Q |
| 2 | 1 | Roger Baker | Great Britain | 50.6 | Q |
| 3 | 1 | Mario Paoletti | Italy | 51.0 | Q |
| 4 | 1 | Heinrich Moser | West Germany | 51.3 | |
| 5 | 1 | Jacques Bierlaire | Belgium | 51.4 | |
| 6 | 1 | Puertas | Spain | 54.8 | |
| 1 | 2 | Juan Cruz Echeandía | Spain | 51.1 | Q |
| 2 | 2 | John Wrighton | Great Britain | 51.3 | Q |
| 3 | 2 | Rolf Ude | West Germany | 52.2 | Q |
| 4 | 2 | Walter Kratz | Saar | 53.3 | |
| 1 | 3 | Kanji Akagi | Japan | 50.3 | Q |
| 2 | 3 | Enrico Archilli | Italy | 50.7 | Q |
| 3 | 3 | Urban Cleve | West Germany | 51.0 | Q |
| 4 | 3 | Fernando Bremón | Spain | 51.5 | |
| 5 | 3 | Roger Bofferding | Luxembourg | 51.6 | |
| 1 | 4 | Jean-Jacques Hegg | Switzerland | 49.6 | Q |
| 2 | 4 | João Coutinho | Portugal | 50.5 | Q |
| 3 | 4 | Shigeharu Suzuki | Japan | 50.7 | Q |
| 4 | 4 | Jim Paterson | Great Britain | 50.9 | |
| 5 | 4 | Arie Gluck | Israel | 55.4 | |

### Semifinals

| Rank | Heat | Athlete | Nationality | Time | Notes |
| - | - | - | - | - | - |
| 1 | 1 | Grant Scruggs | United States | 49.5 | Q |
| 2 | 1 | João Coutinho | Portugal | 49.8 | Q |
| 3 | 1 | Enrico Archilli | Italy | 49.9 | Q |
| 4 | 1 | Roger Baker | Great Britain | 50.7 | |
| 5 | 1 | Urban Cleve | West Germany | 51.1 | |
| 6 | 1 | Shigeharu Suzuki | Japan | 53.2 | |
| 1 | 2 | Kanji Akagi | Japan | 49.9 | Q |
| 2 | 2 | Jean-Jacques Hegg | Switzerland | 50.0 | Q |
| 3 | 2 | John Wrighton | Great Britain | 50.3 | Q |
| 4 | 2 | Mario Paoletti | Italy | 50.8 | |
| 5 | 2 | Rolf Ude | West Germany | 50.9 | |
| 6 | 2 | Juan Cruz Echeandía | Spain | 54.2 | |

### Final

| Rank | Name | Nationality | Time |
| - | - | - | - |
| | Grant Scruggs | United States | 48.0 |
| | Jean-Jacques Hegg | Switzerland | 48.2 |
| | John Wrighton | Great Britain | 48.9 |
| 4 | Kanji Akagi | Japan | 49.6 |
| 5 | João Coutinho | Portugal | 49.9 |
| 6 | Enrico Archilli | Italy | 49.9 |
