The women's 3000 metres steeplechase event at the 2010 World Junior Championships in Athletics was held in Monction Stadium (now Croix-Bleue Medavie Stadium) in Moncton, New Brunswick, Canada, on 20 and 22 July.
| Gold | Purity Cherotich Kirui | |
| Silver | Birtukan Adamu | |
| Bronze | Lucia Kamene Muangi |
22 July
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| align=left | align=left | | 9:36.34 | ||||
| align=left | align=left | | 9:43.23 | ||||
| align=left | align=left | | 9:43.71 | ||||
| 4 | align=left | align=left | 9:47.78 | ||||
| 5 | align=left | align=left | | 9:48.08 | |||
| 6 | align=left | align=left |  | 9:57.74 | |||
| 7 | align=left | align=left |  | 10:05.43 | |||
| 8 | align=left | align=left |  | 10:09.66 | |||
| 9 | align=left | align=left |  | 10:23.07 | |||
| 10 | align=left | align=left |  | 10:27.33 | |||
| 11 | align=left | align=left |  | 10:35.38 | |||
| 12 | align=left | align=left | | 10:47.72 |
20 July
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 9:52.77 | Q | ||
| 2 | align=left | align=left | | 9:53.53 | Q | ||
| 3 | align=left | align=left | 10:13.66 | Q | |||
| 4 | align=left | align=left | | 10:14.07 | Q | ||
| 5 | align=left | align=left | | 10:18.74 | q | ||
| 6 | align=left | align=left | 10:39.46 | ||||
| 7 | align=left | align=left |  | 10:39.92 | |||
| 8 | align=left | align=left |  | 10:40.08 | |||
| 9 | align=left | align=left |  | 10:47.37 | |||
| 10 | align=left | align=left | | 10:50.36 | |||
| 11 | align=left | align=left | | 10:59.73 | |||
| 12 | align=left | align=left |  | 11:06.05 | |||
| 13 | align=left | align=left | 11:19.81 |
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 10:01.46 | Q | ||
| 2 | align=left | align=left | | 10:03.88 | Q | ||
| 3 | align=left | align=left | | 10:10.69 | Q | ||
| 4 | align=left | align=left | | 10:12.08 | Q | ||
| 5 | align=left | align=left | | 10:25.89 | q | ||
| 6 | align=left | align=left | | 10:33.09 | q | ||
| 7 | align=left | align=left | | 10:35.58 | q | ||
| 8 | align=left | align=left | 10:38.33 | ||||
| 9 | align=left | align=left |  | 10:42.52 | |||
| 10 | align=left | align=left | | 11:07.04 | |||
| 11 | align=left | align=left | 11:08.00 | ||||
| 12 | align=left | align=left |  | 11:08.57 | |||
| 13 | align=left | align=left |  | 11:09.82 |
According to an unofficial count, 26 athletes from 19 countries participated in the event.