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

The men's 400 metres hurdles event at the 1955 Summer International University Sports Week was held in San Sebastián on 11 and 13 August 1955.

## Medalists

| Gold | Silver | Bronze |
| - | - | - |
| Jan Parlevliet Netherlands | Gianfranco Fantuzzi Italy | Clive Dennis Great Britain |

## Results

### Heats

| Rank | Heat | Athlete | Nationality | Time | Notes |
| - | - | - | - | - | - |
| 1 | 1 | Gianfranco Fantuzzi | Italy | 54.2 | Q |
| 2 | 1 | Jan Parlevliet | Netherlands | 54.5 | Q |
| 3 | 1 | Clive Dennis | Great Britain | 56.2 | Q |
| 4 | 1 | Rudolf Böck | West Germany | 56.6 | |
| 5 | 1 | O'Sullivan | Great Britain | 1:07.5 | |
| 1 | 2 | Giovanni Bonanno | Italy | 55.0 | Q |
| 2 | 2 | Derek Salter | Great Britain | 55.9 | Q |
| 3 | 2 | Helmut Joho | West Germany | 56.1 | Q |
| 4 | 2 | Edgard Kloß | West Germany | 56.1 | |
| 5 | 2 | Francisco Javier Sáinz | Spain | 58.2 | |

### Final

| Rank | Name | Nationality | Time |
| - | - | - | - |
| | Jan Parlevliet | Netherlands | 53.8 |
| | Gianfranco Fantuzzi | Italy | 53.9 |
| | Clive Dennis | Great Britain | 54.8 |
| 4 | Giovanni Bonanno | Italy | 55.6 |
| 5 | Derek Salter | Great Britain | 57.0 |
| 6 | Helmut Joho | West Germany | 57.8 |
