The men's 1500 metres event at the 2017 European Athletics U23 Championships was held in Bydgoszcz, Poland, at Zdzisław Krzyszkowiak Stadium on 13 and 15 July.
| Gold | Marius Probst | |
| Silver | Filip Sasínek | |
| Bronze | Michał Rozmys |
14 July[1]
Qualification rule: First 4 (Q) and the next 4 fastest (q) qualified for the final.
| Rank | Heat | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|---|
| 1 | 2 | align=left | align=left | 3:43.22 | Q | |||
| 2 | 2 | align=left | align=left | 3:43.35 | Q | |||
| 3 | 2 | align=left | align=left | 3:43.41 | Q | |||
| 4 | 2 | align=left | align=left | 3:43.47 | Q | |||
| 5 | 2 | align=left | align=left | 3:43.49 | q | |||
| 6 | 1 | align=left | align=left | 3:43.88 | Q | |||
| 7 | 2 | align=left | align=left | 3:43.96 | q | |||
| 8 | 1 | align=left | align=left | 3:43.96 | Q | |||
| 9 | 1 | align=left | align=left | 3:43.99 | Q | |||
| 10 | 2 | align=left | align=left | 3:44.19 | q, SB | |||
| 11 | 1 | align=left | align=left | 3:44.36 | Q | |||
| 12 | 1 | align=left | align=left | 3:44.38 | q | |||
| 13 | 1 | align=left | align=left | 3:44.56 | ||||
| 14 | 2 | align=left | align=left | 3:44.72 | ||||
| 15 | 1 | align=left | align=left | 3:44.73 | ||||
| 16 | 1 | align=left | align=left | 3:44.87 | ||||
| 17 | 1 | align=left | align=left | 3:45.18 | ||||
| 18 | 2 | align=left | align=left | 3:45.74 | ||||
| 19 | 1 | align=left | align=left | 3:45.89 | ||||
| 20 | 2 | align=left | align=left | 3:46.87 | ||||
| 21 | 1 | align=left | align=left | 3:47.13 | ||||
| 22 | 2 | align=left | align=left | 3:47.73 | ||||
| 23 | 1 | align=left | align=left | 3:48.95 | ||||
| 24 | 1 | align=left | align=left | 3:50.45 | ||||
| 25 | 2 | align=left | align=left | 3:51.83 | ||||
| 26 | 2 | align=left | align=left | 3:52.47 | ||||
| 27 | 1 | align=left | align=left | 3:56.12 | ||||
| 28 | 2 | align=left | align=left | 4:04.47 |
15 July[2]
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| align=left | align=left | 3:49.06 | |||||
| align=left | align=left | 3:49.23 | |||||
| align=left | align=left | 3:49.30 | |||||
| align=left | align=left | 3:49.53 | |||||
| align=left | align=left | 3:49.76 | |||||
| align=left | align=left | 3:49.78 | |||||
| align=left | align=left | 3:49.94 | |||||
| align=left | align=left | 3:50.07 | |||||
| align=left | align=left | 3:51.05 | |||||
| 10 | align=left | align=left | 3:51.25 | ||||
| 11 | align=left | align=left | 3:51.31 | ||||
| 12 | align=left | align=left | 3:54.63 |