The men's 1500 metres event at the 2005 European Athletics U23 Championships was held in Erfurt, Germany, at Steigerwaldstadion on 15 and 17 July.
| Gold | Arturo Casado | |
| Silver | Stefan Eberhardt | |
| Bronze | Francisco España |
17 July
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| align=left | align=left | | 3:47.02 | ||||
| align=left | align=left | 3:48.09 | |||||
| align=left | align=left | | 3:48.16 | ||||
| 4 | align=left | align=left | 3:48.45 | ||||
| 5 | align=left | align=left | 3:48.50 | ||||
| 6 | align=left | align=left |  | 3:48.56 | |||
| 7 | align=left | align=left |  | 3:48.76 | |||
| 8 | align=left | align=left |  | 3:49.50 | |||
| 9 | align=left | align=left | | 3:51.44 | |||
| 10 | align=left | align=left |  | 3:53.35 | |||
| 11 | align=left | align=left | 4:09.08 | ||||
| align=left | align=left | | DQ | IAAF rule 163.2 |
15 July
Qualified: first 4 in each heat and 4 best to the Final
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 3:44.43 | Q | ||
| 2 | align=left | align=left | | 3:44.46 | Q | ||
| 3 | align=left | align=left | 3:44.53 | Q | |||
| 4 | align=left | align=left | 3:44.63 | Q | |||
| 5 | align=left | align=left | | 3:45.21 | q | ||
| 6 | align=left | align=left | | 3:45.90 | q | ||
| 7 | align=left | align=left | | 3:47.39 | |||
| 8 | align=left | align=left |  | 3:49.03 | |||
| 9 | align=left | align=left | 3:49.77 | ||||
| 10 | align=left | align=left | | 3:51.10 |
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 3:44.90 | Q | ||
| 2 | align=left | align=left | 3:45.44 | Q | |||
| 3 | align=left | align=left | | 3:45.94 | Q | ||
| 4 | align=left | align=left | 3:46.01 | Q | |||
| 5 | align=left | align=left | | 3:46.23 | q | ||
| 6 | align=left | align=left | | 3:46.44 | q | ||
| 7 | align=left | align=left | 3:46.62 | ||||
| 8 | align=left | align=left | 3:46.66 | ||||
| 9 | align=left | align=left |  | 3:46.78 | |||
| 10 | align=left | align=left | | 3:49.67 | |||
| 11 | align=left | align=left |  | 3:56.20 |
According to an unofficial count, 21 athletes from 11 countries participated in the event.
(1) (2) (2) (1) (1) (3) (1) (3)