The men's 3000 metres steeplechase event at the 1998 World Junior Championships in Athletics was held in Annecy, France, at Parc des Sports on 30 July and 1 August.
| Gold | Reuben Kosgei | |
| Silver | Abraham Cherono | |
| Bronze | Mustapha Mellouk |
1 August
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| align=left | align=left | | 8:23.76 | ||||
| align=left | align=left | | 8:32.24 | ||||
| align=left | align=left | | 8:34.91 | ||||
| 4 | align=left | align=left |  | 8:35.51 | |||
| 5 | align=left | align=left |  | 8:38.66 | |||
| 6 | align=left | align=left |  | 8:41.05 | |||
| 7 | align=left | align=left | | 8:42.19 | |||
| 8 | align=left | align=left |  | 8:42.55 | |||
| 9 | align=left | align=left | | 8:43.47 | |||
| 10 | align=left | align=left | | 8:44.30 | |||
| 11 | align=left | align=left |  | 8:46.66 | |||
| 12 | align=left | align=left | 8:53.94 |
30 July
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 8:47.27 | Q | ||
| 2 | align=left | align=left | | 8:47.34 | Q | ||
| 3 | align=left | align=left | | 8:55.53 | Q | ||
| 4 | align=left | align=left |  | 9:01.89 | |||
| 5 | align=left | align=left | 9:07.37 | ||||
| 6 | align=left | align=left | | 9:09.77 | |||
| 7 | align=left | align=left |  | 9:10.64 | |||
| 8 | align=left | align=left | 9:10.67 | ||||
| 9 | align=left | align=left | 9:23.21 | ||||
| 10 | align=left | align=left |  | 9:33.17 | |||
| 11 | align=left | align=left |  | 9:35.83 | |||
| 12 | align=left | align=left | 9:53.29 |
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 8:42.79 | Q | ||
| 2 | align=left | align=left | | 8:43.07 | Q | ||
| 3 | align=left | align=left | | 8:46.27 | Q | ||
| 4 | align=left | align=left | | 8:49.49 | q | ||
| 5 | align=left | align=left | | 8:55.82 | |||
| 6 | align=left | align=left |  | 9:06.16 | |||
| 7 | align=left | align=left | 9:07.09 | ||||
| 8 | align=left | align=left |  | 9:13.68 | |||
| 9 | align=left | align=left |  | 9:17.96 | |||
| 10 | align=left | align=left |  | 9:22.32 | |||
| 11 | align=left | align=left | 9:44.80 | ||||
| 12 | align=left | align=left | 9:46.34 | ||||
| 13 | align=left | align=left | | 10:01.73 |
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 8:42.94 | Q | ||
| 2 | align=left | align=left | | 8:43.11 | Q | ||
| 3 | align=left | align=left | 8:43.15 | Q | |||
| 4 | align=left | align=left | | 8:43.16 | q | ||
| 5 | align=left | align=left | | 8:48.77 | q | ||
| 6 | align=left | align=left | 8:56.75 | ||||
| 7 | align=left | align=left | | 9:05.04 | |||
| 8 | align=left | align=left |  | 9:07.30 | |||
| 9 | align=left | align=left |  | 9:08.05 | |||
| 10 | align=left | align=left | | 9:26.46 | |||
| 11 | align=left | align=left |  | 9:45.53 | |||
| align=left | align=left |  | DNF |
According to an unofficial count, 37 athletes from 26 countries participated in the event.