The men's 4 x 100 metres relay event at the 2015 Summer Universiade was held on 11 and 12 July at the Gwangju Universiade Main Stadium.
| width=200 valign=top | Kazuma Oseto Takuya Nagata Tatsuro Suwa Kotaro Taniguchi Yuki Koike | width=200 valign=top | Adam Pawłowski Grzegorz Zimniewicz Artur Zaczek Kamil Kryński Jakub Adamski | width=200 valign=top | Ncincilili Titi Gideon Trotter Eckhardt Rossouw Akani Simbine |
* Athletes who competed in heats only.
Qualification: First 2 teams of each heat (Q) plus the next 2 fastest (q) qualified for the final.[1]
| Rank | Heat | Nation | Athletes | Time | Notes | |
|---|---|---|---|---|---|---|
| 1 | 1 | 38.93 | Q, SB | |||
| 2 | 2 | 39.12 | Q | |||
| 3 | 3 | 39.24 | Q, SB | |||
| 4 | 1 | 39.29 | Q | |||
| 5 | 2 | 39.42 | Q | |||
| 6 | 2 | 39.44 | q | |||
| 7 | 3 | 39.69 | Q | |||
| 8 | 3 | 39.75 | q | |||
| 9 | 1 | 39.99 | SB | |||
| 10 | 1 | 40.30 | ||||
| 11 | 1 | 40.45 | ||||
| 12 | 2 | 40.67 | SB | |||
| 13 | 1 | 40.69 | ||||
| 14 | 2 | 41.05 | SB | |||
| 15 | 3 | 41.71 | ||||
| 2 | ||||||
| 3 | ||||||
| 3 |
| Rank | Lane | Nation | Athletes | Time | Notes | |
|---|---|---|---|---|---|---|
| 3 | 39.08 | |||||
| 4 | 39.50 | |||||
| 2 | 39.68 | |||||
| 4 | 5 | 39.71 | ||||
| 5 | 6 | 39.86 | ||||
| 6 | 7 | 40.12 | ||||
| 7 | 1 | 41.70 | ||||
| 8 |