The men's long jump event at the 1998 World Junior Championships in Athletics was held in Annecy, France, at Parc des Sports on 29 and 30 July.
| Gold | Petar Dachev | |
| Silver | Abdul Rahman Al-Nubi | |
| Bronze | Luis Felipe Méliz |
30 July
| Rank | Name | Nationality | Attempts | Result | Notes | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | ||||||||
| align=left | align=left | 8.11 (w: +0.9 m/s) | 8.11 (w: +0.7 m/s) | x | 7.69 (w: 0.0 m/s) | 8.14 (w: +0.3 m/s) | x | 8.14 (w: +0.3 m/s) | |||||
| align=left | align=left | | 7.83 (w: -1.5 m/s) | 8.11 (w: -0.1 m/s) | 7.90 (w: -1.0 m/s) | 7.93 w (w: +2.1 m/s) | x | 7.86 (w: +1.2 m/s) | 8.11 (w: -0.1 m/s) | ||||
| align=left | align=left | | 7.59 (w: +0.4 m/s) | 7.91 (w: +0.6 m/s) | x | 7.59 (w: +1.1 m/s) | 7.62 (w: -0.8 m/s) | x | 7.91 (w: +0.6 m/s) | ||||
| 4 | align=left | align=left | 7.79 (w: +0.4 m/s) | 7.87 w (w: +2.7 m/s) | 7.72 (w: +1.4 m/s) | 6.62 (w: +0.6 m/s) | 7.60 (w: +0.6 m/s) | 7.39 (w: +0.3 m/s) | 7.87 w (w: +2.7 m/s) | ||||
| 5 | align=left | align=left | 7.71 (w: +0.2 m/s) | x | x | 7.83 (w: +0.1 m/s) | 7.71 (w: +0.2 m/s) | x | 7.83 (w: +0.1 m/s) | ||||
| 6 | align=left | align=left |  | 7.69 (w: -0.3 m/s) | 7.75 (w: -3.0 m/s) | 7.70 (w: +0.8 m/s) | x | x | x | 7.75 (w: -3.0 m/s) | |||
| 7 | align=left | align=left | 7.37 (w: -1.2 m/s) | 7.65 (w: -0.2 m/s) | 7.60 (w: -0.2 m/s) | 7.71 (w: -0.8 m/s) | 7.63 (w: -0.1 m/s) | x | 7.71 (w: -0.8 m/s) | ||||
| 8 | align=left | align=left |  | 7.22 (w: +0.3 m/s) | 7.57 (w: +0.6 m/s) | x | 7.41 (w: -0.9 m/s) | 7.61 (w: +0.8 m/s) | 7.52 (w: -0.5 m/s) | 7.61 (w: +0.8 m/s) | |||
| 9 | align=left | align=left |  | 7.48 (w: +1.8 m/s) | x | 7.44 (w: -0.1 m/s) | 7.48 (w: +1.8 m/s) | ||||||
| 10 | align=left | align=left |  | x | 7.39 (w: +0.4 m/s) | x | 7.39 (w: +0.4 m/s) | ||||||
| 11 | align=left | align=left |  | x | 7.11 (w: +0.4 m/s) | x | 7.11 (w: +0.4 m/s) | ||||||
| align=left | align=left | | x | x | x | NM | |||||||
29 Jul
| Rank | Name | Nationality | Attempts | Result | Notes | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||||||
| 1 | align=left | align=left | 7.98 (w: +0.4 m/s) | - | - | 7.98 (w: +0.4 m/s) | Q | |||
| 2 | align=left | align=left | 7.88 w (w: +2.5 m/s) | - | - | 7.88 w (w: +2.5 m/s) | Q | |||
| 3 | align=left | align=left | | 7.86 (w: +1.0 m/s) | - | - | 7.86 (w: +1.0 m/s) | Q | ||
| 4 | align=left | align=left | | x | x | 7.81 (w: +0.5 m/s) | 7.81 (w: +0.5 m/s) | Q | ||
| 5 | align=left | align=left | 7.35 (w: -1.5 m/s) | x | 7.69 (w: +1.7 m/s) | 7.69 (w: +1.7 m/s) | q | |||
| 6 | align=left | align=left | | 7.57 (w: -0.1 m/s) | 7.47 (w: +0.3 m/s) | 7.46 (w: -1.1 m/s) | 7.57 (w: -0.1 m/s) | q | ||
| 7 | align=left | align=left | | 7.29 (w: -0.8 m/s) | x | 7.56 (w: +0.4 m/s) | 7.56 (w: +0.4 m/s) | q | ||
| 8 | align=left | align=left | | 7.46 (w: +0.3 m/s) | 7.30 (w: +1.0 m/s) | 7.39 (w: +0.4 m/s) | 7.46 (w: +0.3 m/s) | |||
| 9 | align=left | align=left | | 7.46 (w: -0.3 m/s) | x | x | 7.46 (w: -0.3 m/s) | |||
| 10 | align=left | align=left |  | 7.45 (w: +0.7 m/s) | x | 7.38 (w: +0.2 m/s) | 7.45 (w: +0.7 m/s) | |||
| 11 | align=left | align=left |  | 7.35 (w: +1.1 m/s) | x | x | 7.35 (w: +1.1 m/s) | |||
| 12 | align=left | align=left |  | x | x | 7.26 (w: -0.1 m/s) | 7.26 (w: -0.1 m/s) | |||
| 13 | align=left | align=left |  | x | 7.25 (w: +0.2 m/s) | 7.08 (w: +0.3 m/s) | 7.25 (w: +0.2 m/s) | |||
| 14 | align=left | align=left |  | 7.06 (w: +0.3 m/s) | 7.19 (w: +0.4 m/s) | 6.92 (w: +0.9 m/s) | 7.19 (w: +0.4 m/s) | |||
| 15 | align=left | align=left |  | 6.85 (w: -1.0 m/s) | 6.98 (w: 0.0 m/s) | x | 6.98 (w: 0.0 m/s) | |||
| 16 | align=left | align=left | 6.82 (w: -1.2 m/s) | x | x | 6.82 (w: -1.2 m/s) | ||||
| 17 | align=left | align=left | 6.50 (w: +0.6 m/s) | x | x | 6.50 (w: +0.6 m/s) | ||||
| Rank | Name | Nationality | Attempts | Result | Notes | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||||||
| 1 | align=left | align=left | | 7.49 (w: -0.3 m/s) | 7.67 (w: +1.0 m/s) | 7.59 w (w: +2.6 m/s) | 7.67 (w: +1.0 m/s) | q | ||
| 2 | align=left | align=left | | x | 7.19 (w: +1.2 m/s) | 7.59 w (w: +2.2 m/s) | 7.59 w (w: +2.2 m/s) | q | ||
| 3 | align=left | align=left | 7.32 (w: +0.9 m/s) | 7.04 (w: +1.5 m/s) | 7.57 (w: +1.6 m/s) | 7.57 (w: +1.6 m/s) | q | |||
| 4 | align=left | align=left | | x | 7.04 (w: -2.0 m/s) | 7.51 w (w: +3.4 m/s) | 7.51 w (w: +3.4 m/s) | q | ||
| 5 | align=left | align=left | | 7.49 (w: -0.1 m/s) | x | 6.99 (w: +0.6 m/s) | 7.49 (w: -0.1 m/s) | q | ||
| 6 | align=left | align=left | | x | 7.48 (w: -1.0 m/s) | 7.41 (w: +0.7 m/s) | 7.48 (w: -1.0 m/s) | |||
| 7 | align=left | align=left |  | x | 7.33 (w: +0.8 m/s) | 7.41 (w: -1.0 m/s) | 7.41 (w: -1.0 m/s) | |||
| 8 | align=left | align=left | | 7.00 (w: -1.2 m/s) | 7.39 (w: +1.9 m/s) | 6.99 (w: +0.5 m/s) | 7.39 (w: +1.9 m/s) | |||
| 9 | align=left | align=left | x | 7.07 (w: -0.4 m/s) | 7.36 (w: -0.7 m/s) | 7.36 (w: -0.7 m/s) | ||||
| 10 | align=left | align=left | 7.34 (w: +0.4 m/s) | x | 6.26 (w: -0.2 m/s) | 7.34 (w: +0.4 m/s) | ||||
| 11 | align=left | align=left | | 7.30 (w: +0.6 m/s) | 7.17 (w: +0.9 m/s) | 7.13 (w: +0.3 m/s) | 7.30 (w: +0.6 m/s) | |||
| 12 | align=left | align=left | | x | x | 7.25 (w: -0.8 m/s) | 7.25 (w: -0.8 m/s) | |||
| 13 | align=left | align=left | | 7.13 (w: -1.1 m/s) | 6.89 (w: -1.1 m/s) | x | 7.13 (w: -1.1 m/s) | |||
| 14 | align=left | align=left |  | x | 6.98 (w: +0.4 m/s) | x | 6.98 (w: +0.4 m/s) | |||
| 15 | align=left | align=left | x | x | 6.95 (w: -0.4 m/s) | 6.95 (w: -0.4 m/s) | ||||
| align=left | align=left | | x | x | x | NM | ||||
| align=left | align=left | x | x | x | NM | |||||
According to an unofficial count, 34 athletes from 22 countries participated in the event.