The men's 4 × 100 metres relay event at the 2009 Asian Athletics Championships was held at the Guangdong Olympic Stadium on November 12–14.
| width=200 bgcolor=gold | Gold | width=200 bgcolor=silver | Silver | width=200 bgcolor=CC9966 | Bronze | |
| valign=top | Masashi Eriguchi Naoki Tsukahara Shinji Takahira Kenji Fujimitsu | valign=top | Guo Fan Liang Jiahong Su Bingtian Zhang Peimeng | valign=top | Tu Chia-lin Liu Yuan-kai Tsai Meng-lin Yi Wei-che |
| Rank | Heat | Nation | Athletes | Time | Notes | |
|---|---|---|---|---|---|---|
| 1 | 1 | 39.24 | Q | |||
| 2 | 1 | 39.27 | Q | |||
| 3 | 1 | 39.82 | Q | |||
| 4 | 2 | 39.99 | Q | |||
| 5 | 2 | 40.01 | Q | |||
| 6 | 2 | 40.03 | Q | |||
| 7 | 1 | 40.29 | q | |||
| 8 | 1 | 40.33 | q | |||
| 1 | [1] | |||||
| 2 | ||||||
| 1 | ||||||
| 2 |
| Rank | Lane | Team | Name | Time | Notes | |
|---|---|---|---|---|---|---|
| 3 | 39.01 | |||||
| 5 | 39.07 | |||||
| 7 | 39.57 | |||||
| 4 | 4 | 39.57 | ||||
| 5 | 6 | 39.58 | ||||
| 6 | 8 | 39.86 | ||||
| 7 | 2 | 40.22 | ||||
| 8 | 1 | 40.37 |