The men's 1500 metres event at the 2010 World Junior Championships in Athletics was held in Moncton, New Brunswick, Canada, at Moncton Stadium on 20 and 22 July.
| Gold | Caleb Ndiku | |
| Silver | Abderrahmane Anou | |
| Bronze | Mohamed Al-Garni |
22 July
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| align=left | align=left | | 3:37.30 | ||||
| align=left | align=left | 3:38.86 | |||||
| align=left | align=left | | 3:38.91 | ||||
| 4 | align=left | align=left |  | 3:39.97 | |||
| 5 | align=left | align=left |  | 3:41.82 | |||
| 6 | align=left | align=left | 3:42.72 | ||||
| 7 | align=left | align=left | | 3:43.75 | |||
| 8 | align=left | align=left |  | 3:44.06 | |||
| 9 | align=left | align=left |  | 3:44.56 | |||
| 10 | align=left | align=left |  | 3:44.61 | |||
| 11 | align=left | align=left |  | 3:46.23 | |||
| 12 | align=left | align=left |  | 3:49.91 |
20 July
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 3:41.99 | Q | ||
| 2 | align=left | align=left | | 3:43.27 | Q | ||
| 3 | align=left | align=left | 3:43.80 | Q | |||
| 4 | align=left | align=left | 3:44.09 | q | |||
| 5 | align=left | align=left | | 3:44.45 | q | ||
| 6 | align=left | align=left |  | 3:45.31 | |||
| 7 | align=left | align=left |  | 3:45.57 | |||
| 8 | align=left | align=left |  | 3:46.45 | |||
| 9 | align=left | align=left |  | 3:48.29 | |||
| 10 | align=left | align=left |  | 3:49.47 | |||
| 11 | align=left | align=left |  | 3:50.53 | |||
| 12 | align=left | align=left | | 3:52.62 | |||
| 13 | align=left | align=left |  | 4:19.35 | |||
| align=left | align=left | | DQ | IAAF rule 163.2 |
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 3:47.75 | Q | ||
| 2 | align=left | align=left | | 3:47.84 | Q | ||
| 3 | align=left | align=left | | 3:47.86 | Q | ||
| 4 | align=left | align=left | | 3:47.89 | |||
| 5 | align=left | align=left | | 3:47.99 | |||
| 6 | align=left | align=left | | 3:48.05 | |||
| 7 | align=left | align=left | | 3:48.14 | |||
| 8 | align=left | align=left |  | 3:49.15 | |||
| 9 | align=left | align=left |  | 3:50.34 | |||
| 10 | align=left | align=left | 3:50.47 | ||||
| 11 | align=left | align=left | 3:50.79 | ||||
| 12 | align=left | align=left |  | 3:52.44 | |||
| 13 | align=left | align=left |  | 3:53.55 | |||
| 14 | align=left | align=left | 3:58.99 |
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 3:42.32 | Q | ||
| 2 | align=left | align=left | | 3:42.62 | Q | ||
| 3 | align=left | align=left | | 3:43.67 | Q | ||
| 4 | align=left | align=left | | 3:44.04 | q | ||
| 5 | align=left | align=left | | 3:44.60 | |||
| 6 | align=left | align=left | | 3:45.04 | |||
| 7 | align=left | align=left | 3:46.46 | ||||
| 8 | align=left | align=left | 3:46.83 | ||||
| 9 | align=left | align=left |  | 3:47.05 | |||
| 10 | align=left | align=left |  | 3:47.47 | |||
| 11 | align=left | align=left | 3:49.27 | ||||
| 12 | align=left | align=left |  | 3:50.15 | |||
| 13 | align=left | align=left | 4:13.93 | ||||
| align=left | align=left | | DNF |
According to an unofficial count, 42 athletes from 30 countries participated in the event.