# Athletics at the 1975 Summer Universiade – Men's 400 metres

The men's 400 metres event at the 1975 Summer Universiade was held at the Stadio Olimpico in Rome on 18 and 19 September.

## Medalists

| Gold | Silver | Bronze |
| Jerzy Pietrzyk Poland | Roger Jenkins Great Britain | Brian Saunders Canada |

## Results
### Heats

Held on 18 September
| Rank | Heat | Athlete | Nationality | Time | Notes |
| 1 | 6 | Roger Jenkins | Great Britain | 46.75 | Q |
| 2 | 6 | Jean-Jacques David | France | 47.05 | Q |
| 3 | 1 | Jerzy Pietrzyk | Poland | 47.12 | Q |
| 4 | 4 | Wolfgang Druschky | West Germany | 47.54 | Q |
| 5 | 2 | Brian Saunders | Canada | 47.57 | Q |
| 6 | 2 | Konstantin Vogt | Switzerland | 47.66 | Q |
| 7 | 4 | Vladimir Nosenko | Soviet Union | 47.68 | Q |
| 8 | 1 | Alfonso Di Guida | Italy | 47.74 | Q |
| 9 | 3 | Aleksandr Bratchikov | Soviet Union | 47.88 | Q |
| 10 | 2 | Peter Matejka | Austria | 47.92 | q |
| 11 | 6 | Petros Tsiakiros | Cyprus | 47.96 | q |
| 12 | 4 | Vasil Kasov | Bulgaria | 47.98 | q |
| 13 | 3 | Markku Taskinen | Finland | 48.02 | Q |
| 14 | 6 | Ivica Ivičak | Yugoslavia | 48.15 | q |
| 15 | 5 | Kyriakos Onissiforou | Greece | 48.20 | Q |
| 16 | 3 | Alberto Diana | Italy | 48.36 | |
| 17 | 2 | Tibor Nagy | Hungary | 48.39 | |
| 18 | 1 | Henri Hermans | Belgium | 48.44 | |
| 18 | 3 | Alex Fortelny | Austria | 48.44 | |
| 20 | 5 | Gérard Boutier | France | 48.64 | Q |
| 21 | 3 | Enrique Aguirre | Mexico | 48.75 | |
| 21 | 6 | Houshemy Yar Arshadi | Iran | 48.75 | |
| 23 | 2 | Supanit Wongsalunkarn | Thailand | 48.82 | |
| 24 | 4 | Enrique de la Mora | Mexico | 48.83 | |
| 25 | 1 | José Antônio Rabaca | Brazil | 49.09 | |
| 26 | 5 | Milorad Čikić | Yugoslavia | 50.06 | |
| 27 | 5 | Mahodbol Oureshi | Pakistan | 51.78 | |
| 28 | 1 | Wilfrid Cyriaque | Haiti | 51.86 | |
| 29 | 1 | Carlos Mejía | Honduras | 53.53 | |
| 30 | 2 | Rodolfo Lanez | Honduras | 58.64 | |

### Semifinals

Held on 19 September
| Rank | Heat | Athlete | Nationality | Time | Notes |
| 1 | 2 | Roger Jenkins | Great Britain | 47.46 | Q |
| 2 | 1 | Markku Taskinen | Finland | 47.61 | Q |
| 3 | 1 | Jerzy Pietrzyk | Poland | 47.65 | Q |
| 4 | 1 | Alfonso Di Guida | Italy | 47.80 | Q |
| 5 | 1 | Wolfgang Druschky | West Germany | 47.81 | Q |
| 6 | 2 | Brian Saunders | Canada | 47.92 | Q |
| 7 | 2 | Konstantin Vogt | Switzerland | 47.94 | Q |
| 8 | 1 | Vladimir Nosenko | Soviet Union | 48.01 | |
| 9 | 2 | Aleksandr Bratchikov | Soviet Union | 48.08 | Q |
| 10 | 2 | Peter Matejka | Austria | 48.41 | |
| 11 | 1 | Kyriakos Onissiforou | Greece | 48.47 | |
| 12 | 2 | Gérard Boutier | France | 48.73 | |
| 13 | 1 | Vasil Kasov | Bulgaria | 48.81 | |
| 14 | 1 | Jean-Jacques David | France | 49.25 | |
| 15 | 2 | Ivica Ivičak | Yugoslavia | 51.08 | |
| | 2 | Petros Tsiakiros | Cyprus | ? | |

### Final

Held on 19 September
| Rank | Athlete | Nationality | Time |
| | Jerzy Pietrzyk | Poland | 46.26 |
| | Roger Jenkins | Great Britain | 46.55 |
| | Brian Saunders | Canada | 46.83 |
| 4 | Alfonso Di Guida | Italy | 47.11 |
| 5 | Markku Taskinen | Finland | 47.12 |
| 6 | Konstantin Vogt | Switzerland | 47.13 |
| 7 | Wolfgang Druschky | West Germany | 47.34 |
| 8 | Aleksandr Bratchikov | Soviet Union | 47.49 |