The men's 4 x 400 metres relay event at the 2009 European Athletics U23 Championships was held in Kaunas, Lithuania, at S. Dariaus ir S. Girėno stadionas (Darius and Girėnas Stadium) on 18 and 19 July.
| Gold | Marcin Sobiech Jakub Krzewina Michał Pietrzak Jan Ciepiela Łukasz Krawczuk
| |
| Silver | Marco Vistalli Isalbet Juarez Domenico Fontana Matteo Galvan  | |
| Bronze | Bruno Naprix Mame-Ibra Anne Yoan Décimus Yannick Fonsat Abdesslam Merabet
|
Competed in heat.
19 July
| Rank | Nation | Competitors | Time | Notes | ||
|---|---|---|---|---|---|---|
| align=left |  | 3:03.74 | ||||
| align=left | | 3:03.79 | ||||
| align=left |  | 3:04.06 | ||||
| 4 | align=left |  | 3:04.51 | |||
| 5 | align=left |  | 3:05.63 | |||
| 6 | align=left | 3:06.18 | ||||
| 7 | align=left | 3:08.65 | ||||
| 8 | align=left |  | 3:12.30 |
18 July
Qualified: first 3 in each heat and 2 to the Final
| Rank | Nation | Competitors | Time | Notes | ||
|---|---|---|---|---|---|---|
| 1 | align=left | | 3:10.18 | Q | ||
| 2 | align=left | | 3:10.20 | Q | ||
| 3 | align=left | 3:10.34 | Q | |||
| 4 | align=left |  | 3:13.13 | |||
| 5 | align=left | 3:17.15 |
| Rank | Nation | Competitors | Time | Notes | ||
|---|---|---|---|---|---|---|
| 1 | align=left | | 3:07.13 | Q | ||
| 2 | align=left | | 3:07.80 | Q | ||
| 3 | align=left | | 3:07.98 | Q | ||
| 4 | align=left | 3:08.11 | q | |||
| 5 | align=left | | 3:10.54 | q | ||
| align=left |  | DNS |
According to an unofficial count, 47 athletes from 10 countries participated in the event.
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