The men's high jump event at the 1986 World Junior Championships in Athletics was held in Athens, Greece, at Olympic Stadium on 19 and 20 July.
| Gold | Javier Sotomayor | |
| Silver | Hollis Conway | |
| Bronze | Thomas Müller |
20 July
| Rank | Name | Nationality | Result | Notes | |||
|---|---|---|---|---|---|---|---|
| align=left | align=left | | 2.25 | ||||
| align=left | align=left | | 2.22 | ||||
| align=left | align=left | 2.22 | |||||
| 4 | align=left | align=left | 2.19 | ||||
| 5 | align=left | align=left | 2.16 | ||||
| 6 | align=left | align=left | | 2.16 | |||
| 7 | align=left | align=left |  | 2.16 | |||
| 8 | align=left | align=left | 2.13 | ||||
| 9 | align=left | align=left |  | 2.13 | |||
| 10 | align=left | align=left |  | 2.13 | |||
| 11 | align=left | align=left | 2.10 | ||||
| 12 | align=left | align=left |  | 2.10 |
19 Jul
| Rank | Name | Nationality | Result | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 2.15 | Q | ||
| align=left | align=left | 2.15 | Q | ||||
| 3 | align=left | align=left | | 2.13 | q | ||
| 4 | align=left | align=left | 2.11 | ||||
| 5 | align=left | align=left | 2.09 | ||||
| 6 | align=left | align=left |  | 2.06 | |||
| 7 | align=left | align=left | | 2.03 | |||
| 8 | align=left | align=left | 2.00 | ||||
| align=left | align=left | 2.00 | |||||
| align=left | align=left | 2.00 | |||||
| align=left | align=left | 2.00 | |||||
| 12 | align=left | align=left |  | 1.95 | |||
| align=left | align=left |  | 1.95 | ||||
| align=left | align=left |  | 1.95 | ||||
| align=left | align=left |  | 1.95 | ||||
| 16 | align=left | align=left |  | 1.90 | |||
| align=left | align=left | 1.90 | |||||
| align=left | align=left | | NH |
| Rank | Name | Nationality | Result | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 2.13 | q | ||
| align=left | align=left | | 2.13 | q | |||
| align=left | align=left | | 2.13 | q | |||
| align=left | align=left | | 2.13 | q | |||
| align=left | align=left | 2.13 | q | ||||
| align=left | align=left | 2.13 | q | ||||
| align=left | align=left | 2.13 | q | ||||
| align=left | align=left | 2.13 | q | ||||
| align=left | align=left | | 2.13 | q | |||
| 10 | align=left | align=left |  | 2.11 | |||
| align=left | align=left | | 2.11 | ||||
| 12 | align=left | align=left |  | 2.06 | |||
| align=left | align=left | 2.06 | |||||
| align=left | align=left | 2.06 | |||||
| align=left | align=left | 2.06 | |||||
| 16 | align=left | align=left | | 1.85 | |||
| 17 | align=left | align=left |  | 1.80 | |||
| align=left | align=left | | NH |
According to an unofficial count, 36 athletes from 26 countries participated in the event.