The men's 3000 metres steeplechase event at the 2010 World Junior Championships in Athletics was held in Moncton, New Brunswick, Canada, at Moncton Stadium on 23 and 25 July.
| Gold | Jonathan Ndiku | |
| Silver | Albert Kiptoo Yator | |
| Bronze | Jacob Araptany |
25 July
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| align=left | align=left | | 8:23.48 | ||||
| align=left | align=left | | 8:33.55 | ||||
| align=left | align=left | | 8:37.02 | ||||
| 4 | align=left | align=left |  | 8:40.08 | |||
| 5 | align=left | align=left |  | 8:44.07 | |||
| 6 | align=left | align=left |  | 8:52.10 | |||
| 7 | align=left | align=left |  | 8:52.46 | |||
| 8 | align=left | align=left | | 8:54.84 | |||
| 9 | align=left | align=left | | 8:56.40 | |||
| 10 | align=left | align=left |  | 8:57.53 | |||
| 11 | align=left | align=left | 9:00.56 | ||||
| 12 | align=left | align=left |  | 9:00.87 |
23 July
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 8:40.92 | Q | ||
| 2 | align=left | align=left | | 8:49.74 | Q | ||
| 3 | align=left | align=left | | 8:53.96 | Q | ||
| 4 | align=left | align=left | | 8:54.50 | Q | ||
| 5 | align=left | align=left | 8:55.15 | q | |||
| 6 | align=left | align=left | | 8:55.77 | q | ||
| 7 | align=left | align=left |  | 8:55.96 | |||
| 8 | align=left | align=left |  | 9:00.38 | |||
| 9 | align=left | align=left | 9:00.92 | ||||
| 10 | align=left | align=left |  | 9:04.44 | |||
| 11 | align=left | align=left | | 9:06.62 | |||
| 12 | align=left | align=left |  | 9:10.66 | |||
| 13 | align=left | align=left |  | 9:15.35 | |||
| 14 | align=left | align=left |  | 9:16.87 | |||
| 15 | align=left | align=left | | 9:27.68 |
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 8:28.14 | Q | ||
| 2 | align=left | align=left | | 8:28.23 | Q | ||
| 3 | align=left | align=left | | 8:38.04 | Q | ||
| 4 | align=left | align=left | | 8:49.38 | Q | ||
| 5 | align=left | align=left | | 8:51.43 | q | ||
| 6 | align=left | align=left | | 8:55.33 | q | ||
| 7 | align=left | align=left |  | 8:56.86 | |||
| 8 | align=left | align=left | 9:09.36 | ||||
| 9 | align=left | align=left | | 9:10.82 | |||
| 10 | align=left | align=left | 9:11.34 | ||||
| 11 | align=left | align=left | | 9:11.70 | |||
| 12 | align=left | align=left |  | 9:13.23 | |||
| 13 | align=left | align=left | 9:18.75 | ||||
| 14 | align=left | align=left |  | 9:20.70 | |||
| 15 | align=left | align=left |  | 9:32.95 |
According to an unofficial count, 30 athletes from 21 countries participated in the event.