The men's 4 × 100 metres relay event at the 2005 Summer Universiade was held on 19–20 August in İzmir, Turkey.
| width=200 valign=top | Luca Verdecchia Alessandro Rocco Massimiliano Donati Stefano Anceschi | width=200 valign=top | Kazuya Kitamura Masaya Aikawa Masaya Minami Shinji Takahira | width=200 valign=top | Gavin Eastman Tyrone Edgar Darren Chin Tim Abeyie |
| Rank | Heat | Nation | Athletes | Time | Notes | |
|---|---|---|---|---|---|---|
| 1 | 3 | 39.78 | Q | |||
| 2 | 3 | 39.82 | Q | |||
| 3 | 3 | 39.97 | q | |||
| 4 | 1 | 39.99 | Q | |||
| 5 | 1 | 40.06 | Q | |||
| 6 | 1 | 40.15 | q | |||
| 7 | 2 | 40.15 | Q | |||
| 8 | 2 | 40.23 | Q | |||
| 9 | 2 | 40.42 | ||||
| 10 | 2 | 40.83 | ||||
| 11 | 3 | 40.85 | ||||
| 12 | 1 | 41.01 | ||||
| 13 | 3 | 41.18 | ||||
| 14 | 2 | 41.39 | ||||
| 15 | 3 | 41.42 | ||||
| 16 | 1 | 41.81 | ||||
| 17 | 1 | 42.61 | ||||
| 18 | 2 | 42.90 | ||||
| 19 | 1 | 43.64 | ||||
| 2 | ||||||
| 3 |
| Rank | Nation | Athletes | Time | Notes | |
|---|---|---|---|---|---|
| 39.25 | |||||
| 39.29 | |||||
| 39.41 | |||||
| 4 | 39.45 | ||||
| 5 | 39.61 | ||||
| 6 | 39.84 | ||||
| 7 | 39.86 | ||||