The men's 3000 metres steeplechase event at the 2000 World Junior Championships in Athletics was held in Santiago, Chile, at Estadio Nacional Julio Martínez Prádanos on 18 and 21 October.
| Gold | Raymond Yator | |
| Silver | David Chemweno | |
| Bronze | Abdelatif Chemlal |
21 October
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| align=left | align=left | | 8:16.34 | ||||
| align=left | align=left | | 8:31.95 | ||||
| align=left | align=left | | 8:43.57 | ||||
| 4 | align=left | align=left | 8:45.34 | ||||
| 5 | align=left | align=left |  | 8:46.80 | |||
| 6 | align=left | align=left |  | 8:51.26 | |||
| 7 | align=left | align=left |  | 8:53.18 | |||
| 8 | align=left | align=left | 8:53.48 | ||||
| 9 | align=left | align=left |  | 9:03.14 | |||
| 10 | align=left | align=left | 9:03.42 | ||||
| 11 | align=left | align=left |  | 9:16.32 | |||
| 12 | align=left | align=left | 9:22.20 |
18 October
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 8:35.76 | Q | ||
| 2 | align=left | align=left | | 8:52.46 | Q | ||
| 3 | align=left | align=left | | 8:53.70 | Q | ||
| 4 | align=left | align=left | 8:57.24 | Q | |||
| 5 | align=left | align=left | 8:58.93 | q | |||
| 6 | align=left | align=left | 9:01.03 | q | |||
| 7 | align=left | align=left | 9:04.36 | ||||
| 8 | align=left | align=left |  | 9:07.94 | |||
| 9 | align=left | align=left | 9:10.98 | ||||
| 10 | align=left | align=left |  | 9:12.45 | |||
| 11 | align=left | align=left |  | 9:12.69 | |||
| 12 | align=left | align=left |  | 9:14.78 | |||
| 13 | align=left | align=left |  | 9:15.42 | |||
| 14 | align=left | align=left |  | 9:21.67 | |||
| 15 | align=left | align=left |  | 9:25.72 | |||
| 16 | align=left | align=left |  | 9:40.80 | |||
| align=left | align=left | DNF |
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 8:51.34 | Q | ||
| 2 | align=left | align=left | | 8:51.45 | Q | ||
| 3 | align=left | align=left | 8:53.03 | Q | |||
| 4 | align=left | align=left | | 8:54.17 | Q | ||
| 5 | align=left | align=left | | 8:54.78 | q | ||
| 6 | align=left | align=left | | 8:55.19 | q | ||
| 7 | align=left | align=left | | 9:05.43 | |||
| 8 | align=left | align=left | 9:09.55 | ||||
| 9 | align=left | align=left | 9:16.25 | ||||
| 10 | align=left | align=left | 9:18.67 | ||||
| 11 | align=left | align=left | 9:21.33 | ||||
| 12 | align=left | align=left |  | 9:24.28 | |||
| 13 | align=left | align=left | 9:30.35 | ||||
| 14 | align=left | align=left |  | 9:31.74 | |||
| align=left | align=left | DQ | IAAF rule 163.6 | ||||
| align=left | align=left | DNF | |||||
| align=left | align=left | | DNF |
According to an unofficial count, 34 athletes from 25 countries participated in the event.