The men's long jump event at the 1990 World Junior Championships in Athletics was held in Plovdiv, Bulgaria, at Deveti Septemvri Stadium on 9 and 10 August.[1]
| Gold | James Stallworth | |
| Silver | Dion Bentley | |
| Bronze | Kareem Streete-Thompson |
10 August
| Rank | Name | Nationality | Attempts | Result | Notes | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | ||||||||
| align=left | align=left | | x | x | 7.81 (w: +0.5 m/s) | x | 8.12 (w: +0.4 m/s) | x | 8.12 (w: +0.4 m/s) | ||||
| align=left | align=left | | 8.05 (w: -0.6 m/s) | x | 7.86 (w: -0.6 m/s) | x | 7.90 (w: +0.4 m/s) | 7.91 (w: +0.9 m/s) | 8.05 (w: -0.6 m/s) | ||||
| align=left | align=left | 7.70 (w: -0.4 m/s) | 7.59 (w: +0.2 m/s) | 7.64 (w: +0.3 m/s) | 7.71 (w: +0.3 m/s) | 7.57 (w: +0.9 m/s) | 7.94 (w: -0.2 m/s) | 7.94 (w: -0.2 m/s) | |||||
| 4 | align=left | align=left |  | x | 7.30 (w: +0.3 m/s) | 7.44 (w: -0.3 m/s) | 7.81 (w: -0.2 m/s) | 7.80 (w: +1.1 m/s) | x | 7.81 (w: -0.2 m/s) | |||
| 5 | align=left | align=left |  | 7.44 (w: -0.1 m/s) | 7.19 (w: NWI) | 7.63 (w: +0.1 m/s) | 7.61 (w: -0.2 m/s) | 7.33 (w: +0.3 m/s) | 7.44 (w: +0.3 m/s) | 7.63 (w: +0.1 m/s) | |||
| 6 | align=left | align=left | 7.35 (w: -0.2 m/s) | x | 7.56 (w: +0.7 m/s) | 7.24 (w: -0.4 m/s) | 7.42 (w: -0.5 m/s) | 7.58 (w: +0.4 m/s) | 7.58 (w: +0.4 m/s) | ||||
| 7 | align=left | align=left | 6.97 (w: -1.3 m/s) | 7.26 (w: -0.6 m/s) | 7.58 (w: +0.6 m/s) | 7.33 (w: +0.4 m/s) | 7.50 (w: -0.7 m/s) | 5.77 (w: +0.8 m/s) | 7.58 (w: +0.6 m/s) | ||||
| 8 | align=left | align=left | 7.41 (w: -0.4 m/s) | 7.49 (w: -0.4 m/s) | x | 7.46 (w: -0.2 m/s) | 7.47 (w: +0.4 m/s) | 7.49 (w: +0.3 m/s) | 7.49 (w: -0.4 m/s) | ||||
| 9 | align=left | align=left | 7.39 (w: +0.4 m/s) | 7.40 (w: -0.2 m/s) | 7.35 (w: +0.4 m/s) | 7.40 (w: -0.2 m/s) | |||||||
| 10 | align=left | align=left |  | 7.16 (w: +0.6 m/s) | 7.03 (w: -0.3 m/s) | 7.37 (w: +0.2 m/s) | 7.37 (w: +0.2 m/s) | ||||||
| 11 | align=left | align=left | x | x | 7.10 (w: +0.6 m/s) | 7.10 (w: +0.6 m/s) | |||||||
| 12 | align=left | align=left | 6.99 (w: -0.4 m/s) | 6.90 (w: -0.1 m/s) | x | 6.99 (w: -0.4 m/s) | |||||||
9 Aug
| Rank | Name | Nationality | Attempts | Result | Notes | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||||||
| 1 | align=left | align=left | | x | 8.20 (w: +1.4 m/s) | - | 8.20 (w: +1.4 m/s) | Q | ||
| 2 | align=left | align=left | x | 7.38 (w: +1.5 m/s) | 7.95 (w: +1.6 m/s) | 7.95 (w: +1.6 m/s) | Q | |||
| 3 | align=left | align=left | x | x | 7.64 w (w: +2.3 m/s) | 7.64 w (w: +2.3 m/s) | Q | |||
| 4 | align=left | align=left | 7.42 (w: -0.8 m/s) | 7.47 (w: +0.8 m/s) | 7.53 (w: +0.5 m/s) | 7.53 (w: +0.5 m/s) | q | |||
| 5 | align=left | align=left | | x | 7.06 (w: +0.7 m/s) | 7.47 (w: +1.4 m/s) | 7.47 (w: +1.4 m/s) | q | ||
| 6 | align=left | align=left | 7.13 (w: -0.9 m/s) | 7.23 (w: -1.4 m/s) | 7.44 (w: +0.5 m/s) | 7.44 (w: +0.5 m/s) | q | |||
| 7 | align=left | align=left | | 7.44 (w: -0.4 m/s) | x | x | 7.44 (w: -0.4 m/s) | q | ||
| 8 | align=left | align=left | 6.97 (w: -0.7 m/s) | 7.23 (w: +1.0 m/s) | x | 7.23 (w: +1.0 m/s) | ||||
| 9 | align=left | align=left |  | 6.94 (w: -0.8 m/s) | 7.18 (w: +1.4 m/s) | 6.83 (w: -1.4 m/s) | 7.18 (w: +1.4 m/s) | |||
| 10 | align=left | align=left | 6.80 (w: -0.3 m/s) | 6.98 (w: +0.8 m/s) | 6.63 (w: -0.4 m/s) | 6.98 (w: +0.8 m/s) | ||||
| 11 | align=left | align=left | x | x | 6.94 (w: +0.6 m/s) | 6.94 (w: +0.6 m/s) | ||||
| 12 | align=left | align=left |  | 6.89 (w: -0.6 m/s) | 5.07 (w: +0.6 m/s) | 6.82 (w: +1.0 m/s) | 6.89 (w: -0.6 m/s) | |||
| 13 | align=left | align=left |  | 6.64 (w: -1.3 m/s) | x | 6.73 (w: +0.8 m/s) | 6.73 (w: +0.8 m/s) | |||
| 14 | align=left | align=left |  | 5.94 (w: +0.2 m/s) | 6.39 (w: NWI) | 6.03 (w: -1.0 m/s) | 6.39 (w: NWI) | |||
| align=left | align=left | x | x | x | NM | |||||
| Rank | Name | Nationality | Attempts | Result | Notes | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||||||
| 1 | align=left | align=left | | 7.53 (w: NWI) | 7.66 (w: NWI) | - | 7.66 (w: NWI) | Q | ||
| 2 | align=left | align=left | | 7.66 (w: NWI) | - | - | 7.66 (w: NWI) | Q | ||
| 3 | align=left | align=left | x | 7.44 (w: NWI) | x | 7.44 (w: NWI) | q | |||
| 4 | align=left | align=left | 6.69 (w: NWI) | 7.15 (w: NWI) | 7.43 (w: NWI) | 7.43 (w: NWI) | q | |||
| 5 | align=left | align=left | 7.40 (w: NWI) | 7.20 (w: NWI) | 7.42 (w: NWI) | 7.42 (w: NWI) | q | |||
| 6 | align=left | align=left |  | 7.41 (w: NWI) | x | x | 7.41 (w: NWI) | |||
| 7 | align=left | align=left | x | 6.76 (w: NWI) | 7.38 (w: NWI) | 7.38 (w: NWI) | ||||
| 8 | align=left | align=left |  | 7.00 (w: NWI) | x | 7.33 (w: NWI) | 7.33 (w: NWI) | |||
| 9 | align=left | align=left |  | 7.30 (w: NWI) | 7.25 (w: NWI) | 7.32 (w: NWI) | 7.32 (w: NWI) | |||
| 10 | align=left | align=left | x | 6.96 (w: NWI) | 7.31 (w: NWI) | 7.31 (w: NWI) | ||||
| 11 | align=left | align=left |  | 7.30 (w: NWI) | x | x | 7.30 (w: NWI) | |||
| 12 | align=left | align=left | | 7.14 (w: NWI) | x | 7.29 (w: NWI) | 7.29 (w: NWI) | |||
| 13 | align=left | align=left | | x | 7.25 (w: NWI) | x | 7.25 (w: NWI) | |||
| 14 | align=left | align=left | 7.19 (w: NWI) | 7.17 (w: NWI) | x | 7.19 (w: NWI) | ||||
| 15 | align=left | align=left | | 7.14 (w: NWI) | 4.44 (w: NWI) | 6.99 (w: NWI) | 7.14 (w: NWI) | |||
| 16 | align=left | align=left |  | 6.64 (w: NWI) | 6.88 (w: NWI) | 6.93 (w: NWI) | 6.93 (w: NWI) | |||
According to an unofficial count, 31 athletes from 23 countries participated in the event.