The men's triple jump event at the 1998 World Junior Championships in Athletics was held in Annecy, France, at Parc des Sports on 31 July and 1 August.
| Gold | Ionuț Pungă | |
| Silver | Ivaylo Rusenov | |
| Bronze | Gregory Yeldell |
1 August
| Rank | Name | Nationality | Attempts | Result | Notes | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | ||||||||
| align=left | align=left | | 16.47 (w: -1.5 m/s) | 16.63 (w: -1.3 m/s) | x | 16.66 (w: +1.0 m/s) | 16.94 (w: +0.4 m/s) | 16.91 (w: -0.2 m/s) | 16.94 (w: +0.4 m/s) | ||||
| align=left | align=left | 15.91 (w: -0.9 m/s) | 16.11 (w: -1.1 m/s) | x | 16.01 (w: -0.8 m/s) | 16.65 (w: +0.5 m/s) | 16.15 (w: +0.1 m/s) | 16.65 (w: +0.5 m/s) | |||||
| align=left | align=left | x | x | 15.86 (w: -0.2 m/s) | 15.70 (w: -1.1 m/s) | 16.31 (w: +0.4 m/s) | 16.44 (w: -0.1 m/s) | 16.44 (w: -0.1 m/s) | |||||
| 4 | align=left | align=left | 15.71 (w: -1.3 m/s) | x | x | 15.15 (w: -0.7 m/s) | x | 16.27 (w: +1.0 m/s) | 16.27 (w: +1.0 m/s) | ||||
| 5 | align=left | align=left |  | 16.14 (w: -0.6 m/s) | x | x | 15.29 (w: -1.0 m/s) | x | x | 16.14 (w: -0.6 m/s) | |||
| 6 | align=left | align=left | 15.58 (w: -1.0 m/s) | 15.79 (w: -1.6 m/s) | 15.86 (w: -0.4 m/s) | 15.63 (w: +0.7 m/s) | 15.84 (w: +0.4 m/s) | 16.03 (w: +0.3 m/s) | 16.03 (w: +0.3 m/s) | ||||
| 7 | align=left | align=left |  | 15.89 (w: -1.2 m/s) | 16.00 (w: -0.1 m/s) | 15.73 (w: -0.6 m/s) | 15.61 (w: +0.2 m/s) | 15.83 (w: +0.3 m/s) | x | 16.00 (w: -0.1 m/s) | |||
| 8 | align=left | align=left |  | 15.29 (w: -1.6 m/s) | 15.69 (w: -0.7 m/s) | 15.71 (w: -0.8 m/s) | x | 15.00 (w: +2.0 m/s) | 15.56 (w: -1.2 m/s) | 15.71 (w: -0.8 m/s) | |||
| 9 | align=left | align=left | | 15.50 (w: -1.5 m/s) | 15.68 (w: -0.2 m/s) | 15.38 (w: +0.7 m/s) | 15.68 (w: -0.2 m/s) | ||||||
| 10 | align=left | align=left | 15.26 (w: -1.6 m/s) | x | 15.64 (w: -0.9 m/s) | 15.64 (w: -0.9 m/s) | |||||||
| 11 | align=left | align=left |  | 15.54 (w: -1.0 m/s) | 15.59 (w: +0.7 m/s) | 15.41 (w: -0.3 m/s) | 15.59 (w: +0.7 m/s) | ||||||
| 12 | align=left | align=left | 15.13 (w: -0.9 m/s) | 15.38 (w: -1.2 m/s) | 15.42 (w: -1.9 m/s) | 15.42 (w: -1.9 m/s) | |||||||
31 Jul
| Rank | Name | Nationality | Attempts | Result | Notes | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||||||
| 1 | align=left | align=left | 15.69 (w: +0.8 m/s) | 15.88 (w: -0.5 m/s) | 16.37 (w: +0.1 m/s) | 16.37 (w: +0.1 m/s) | Q | |||
| 2 | align=left | align=left | | 16.21 (w: +0.3 m/s) | – | – | 16.21 (w: +0.3 m/s) | Q | ||
| 3 | align=left | align=left | 16.05 (w: 0.0 m/s) | – | – | 16.05 (w: 0.0 m/s) | Q | |||
| 4 | align=left | align=left | | 15.58 (w: -0.3 m/s) | 15.70 (w: +0.7 m/s) | 16.02 (w: +0.8 m/s) | 16.02 (w: +0.8 m/s) | Q | ||
| 5 | align=left | align=left | | 15.97 (w: +0.2 m/s) | – | – | 15.97 (w: +0.2 m/s) | Q | ||
| 6 | align=left | align=left | | 15.72 (w: -0.7 m/s) | x | 15.92 (w: +0.3 m/s) | 15.92 (w: +0.3 m/s) | Q | ||
| 7 | align=left | align=left | 15.29 (w: +0.8 m/s) | 15.56 (w: -0.4 m/s) | 15.80 (w: +0.2 m/s) | 15.80 (w: +0.2 m/s) | q | |||
| 8 | align=left | align=left | | 15.74 (w: +0.3 m/s) | 15.64 (w: -0.1 m/s) | 15.78 (w: +0.1 m/s) | 15.78 (w: +0.1 m/s) | q | ||
| 9 | align=left | align=left | 15.70 (w: -0.1 m/s) | 15.09 (w: -0.5 m/s) | 15.58 (w: -0.3 m/s) | 15.70 (w: -0.1 m/s) | ||||
| 10 | align=left | align=left |  | 14.84 (w: +1.2 m/s) | 15.57 (w: 0.0 m/s) | 14.90 (w: +0.3 m/s) | 15.57 (w: 0.0 m/s) | |||
| 11 | align=left | align=left | 15.11 (w: +1.0 m/s) | 15.34 (w: -0.2 m/s) | 15.52 (w: +0.4 m/s) | 15.52 (w: +0.4 m/s) | ||||
| 12 | align=left | align=left |  | 15.48 (w: +0.4 m/s) | x | 15.44 (w: +0.7 m/s) | 15.48 (w: +0.4 m/s) | |||
| 13 | align=left | align=left | 15.11 (w: +0.6 m/s) | 15.01 (w: -0.5 m/s) | 15.41 (w: -0.3 m/s) | 15.41 (w: -0.3 m/s) | ||||
| 14 | align=left | align=left | 15.07 (w: 0.0 m/s) | 14.77 (w: -0.8 m/s) | 15.40 (w: +0.3 m/s) | 15.40 (w: +0.3 m/s) | ||||
| 15 | align=left | align=left | x | 15.23 (w: +0.8 m/s) | 15.14 (w: +1.1 m/s) | 15.23 (w: +0.8 m/s) | ||||
| Rank | Name | Nationality | Attempts | Result | Notes | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||||||
| 1 | align=left | align=left | | x | 16.14 (w: -0.3 m/s) | – | 16.14 (w: -0.3 m/s) | Q | ||
| 2 | align=left | align=left | 15.98 (w: +0.7 m/s) | – | – | 15.98 (w: +0.7 m/s) | Q | |||
| 3 | align=left | align=left | 15.97 (w: +0.8 m/s) | – | – | 15.97 (w: +0.8 m/s) | Q | |||
| 4 | align=left | align=left | 14.96 (w: +0.3 m/s) | 15.85 (w: +0.1 m/s) | 15.28 (w: +0.3 m/s) | 15.85 (w: +0.1 m/s) | q | |||
| 5 | align=left | align=left | | 15.28 (w: +0.3 m/s) | 15.30 (w: +0.3 m/s) | 15.70 (w: +0.7 m/s) | 15.70 (w: +0.7 m/s) | |||
| 6 | align=left | align=left |  | 15.55 (w: +1.1 m/s) | 13.67 (w: -0.8 m/s) | 15.64 (w: +0.2 m/s) | 15.64 (w: +0.2 m/s) | |||
| 7 | align=left | align=left | | 15.61 (w: +0.4 m/s) | 15.31 (w: +0.2 m/s) | 15.56 (w: -0.1 m/s) | 15.61 (w: +0.4 m/s) | |||
| 8 | align=left | align=left | 15.53 (w: 0.0 m/s) | x | 15.39 (w: +1.1 m/s) | 15.53 (w: 0.0 m/s) | ||||
| 9 | align=left | align=left | x | 14.89 (w: +0.2 m/s) | 15.43 (w: +0.4 m/s) | 15.43 (w: +0.4 m/s) | ||||
| 10 | align=left | align=left |  | 14.89 (w: -1.0 m/s) | x | 15.25 (w: -0.4 m/s) | 15.25 (w: -0.4 m/s) | |||
| 11 | align=left | align=left | | 15.00 (w: -0.2 m/s) | 14.84 (w: -0.5 m/s) | 15.24 (w: -0.1 m/s) | 15.24 (w: -0.1 m/s) | |||
| 12 | align=left | align=left | 14.82 (w: +0.5 m/s) | 13.82 (w: -0.2 m/s) | 15.21 (w: +1.0 m/s) | 15.21 (w: +1.0 m/s) | ||||
| 13 | align=left | align=left |  | x | 15.18 (w: -1.1 m/s) | x | 15.18 (w: -1.1 m/s) | |||
| 14 | align=left | align=left |  | x | 14.84 (w: +0.1 m/s) | 14.69 (w: -0.3 m/s) | 14.84 (w: +0.1 m/s) | |||
| 15 | align=left | align=left | x | 14.52 (w: +0.9 m/s) | 14.23 (w: +0.5 m/s) | 14.52 (w: +0.9 m/s) | ||||
| 16 | align=left | align=left |  | x | 13.60 (w: -0.4 m/s) | x | 13.60 (w: -0.4 m/s) | |||
According to an unofficial count, 31 athletes from 21 countries participated in the event.