The men's 4 x 400 metres relay event at the 2007 European Athletics U23 Championships was held in Debrecen, Hungary, at Gyulai István Atlétikai Stadion on 14 and 15 July.
| Gold | Maksim Dyldin Denis Alekseyev Artem Sergeyenkov Anton Kokorin  | |
| Silver | Grzegorz Klimczyk Patryk Baranowski Piotr Dąbrowski Kacper Kozłowski  | |
| Bronze | Jonas Plass Florian Schwalm Matthias Bos Martin Grothkopp |
15 July
| Rank | Nation | Competitors | Time | Notes | ||
|---|---|---|---|---|---|---|
| align=left | | 3:02.13 | CR | |||
| align=left | | 3:04.76 | ||||
| align=left | 3:05.25 | |||||
| 4 | align=left |  | 3:05.71 | |||
| 5 | align=left |  | 3:07.06 | |||
| 6 | align=left |  | 3:07.08 | |||
| 7 | align=left |  | 3:08.63 | |||
| 8 | align=left |  | 3:09.18 |
14 July
Qualified: first 2 in each heat and 4 best to the Final
| Rank | Nation | Competitors | Time | Notes | ||
|---|---|---|---|---|---|---|
| 1 | align=left | | 3:05.25 | Q | ||
| 2 | align=left | | 3:06.23 | q | ||
| 3 | align=left | | 3:09.27 | q | ||
| 4 | align=left | | 3:10.26 | Q | ||
| align=left |  | DQ | IAAF Rule 170.14 |
| Rank | Nation | Competitors | Time | Notes | ||
|---|---|---|---|---|---|---|
| 1 | align=left | | 3:07.43 | Q | ||
| 2 | align=left | 3:07.69 | Q | |||
| 3 | align=left | | 3:08.26 | q | ||
| 4 | align=left | | 3:08.40 | q | ||
| 5 | align=left |  | 3:11.51 | |||
| align=left |  | DQ | IAAF Rule 145 |
According to an unofficial count, 48 athletes from 11 countries participated in the event.
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