The men's 1500 metres event at the 1990 World Junior Championships in Athletics was held in Plovdiv, Bulgaria, at Deveti Septemvri Stadium on 11 and 12 August.[1]
| Gold | Moses Kiptanui | |
| Silver | Alemayehu Roba | |
| Bronze | Desta Asgedom |
12 August
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| align=left | align=left | | 3:38.32 | ||||
| align=left | align=left | | 3:41.71 | ||||
| align=left | align=left | | 3:43.38 | ||||
| 4 | align=left | align=left | 3:43.97 | ||||
| 5 | align=left | align=left |  | 3:44.30 | |||
| 6 | align=left | align=left | 3:44.79 | ||||
| 7 | align=left | align=left |  | 3:45.07 | |||
| 8 | align=left | align=left |  | 3:45.09 | |||
| 9 | align=left | align=left | | 3:45.50 | |||
| 10 | align=left | align=left | 3:45.70 | ||||
| 11 | align=left | align=left |  | 3:46.27 | |||
| 12 | align=left | align=left |  | 3:49.71 | |||
| 13 | align=left | align=left | 3:50.57 | ||||
| 14 | align=left | align=left | 3:50.71 | ||||
| 15 | align=left | align=left | | 3:50.72 |
11 August
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 3:51.12 | Q | ||
| 2 | align=left | align=left | 3:51.41 | Q | |||
| 3 | align=left | align=left | | 3:51.83 | Q | ||
| 4 | align=left | align=left | | 3:52.03 | Q | ||
| 5 | align=left | align=left | 3:52.80 | ||||
| 6 | align=left | align=left |  | 3:52.98 | |||
| 7 | align=left | align=left | 3:53.84 | ||||
| 8 | align=left | align=left |  | 3:54.01 | |||
| 9 | align=left | align=left |  | 3:54.15 | |||
| 10 | align=left | align=left |  | 3:54.60 | |||
| 11 | align=left | align=left |  | 3:56.56 | |||
| 12 | align=left | align=left | 3:57.33 | ||||
| 13 | align=left | align=left |  | 4:01.31 | |||
| 14 | align=left | align=left | 4:10.24 |
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 3:41.06 | Q | ||
| 2 | align=left | align=left | | 3:46.20 | Q | ||
| 3 | align=left | align=left | 3:48.22 | Q | |||
| 4 | align=left | align=left | | 3:48.97 | Q | ||
| 5 | align=left | align=left | 3:49.67 | ||||
| 6 | align=left | align=left | 3:49.81 | ||||
| 7 | align=left | align=left | 3:50.17 | ||||
| 8 | align=left | align=left | 3:50.49 | ||||
| 9 | align=left | align=left |  | 3:51.89 | |||
| 10 | align=left | align=left | 3:52.31 | ||||
| 11 | align=left | align=left | | 3:59.16 | |||
| 12 | align=left | align=left | | 4:03.39 | |||
| 13 | align=left | align=left | 4:15.37 |
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 3:46.35 | Q | ||
| 2 | align=left | align=left | 3:46.57 | Q | |||
| 3 | align=left | align=left | 3:46.93 | Q | |||
| 4 | align=left | align=left | | 3:46.98 | Q | ||
| 5 | align=left | align=left | | 3:46.99 | q | ||
| 6 | align=left | align=left | | 3:47.08 | q | ||
| 7 | align=left | align=left | 3:47.79 | q | |||
| 8 | align=left | align=left | | 3:47.87 | |||
| 9 | align=left | align=left | 3:52.63 | ||||
| 10 | align=left | align=left |  | 3:53.37 | |||
| 11 | align=left | align=left | 3:54.58 | ||||
| 12 | align=left | align=left | | 3:55.57 | |||
| 13 | align=left | align=left |  | 3:58.73 |
According to an unofficial count, 40 athletes from 27 countries participated in the event.