The men's triple jump event at the 2008 World Junior Championships in Athletics was held in Bydgoszcz, Poland, at Zawisza Stadium on 10 and 11 July.
| Gold | Teddy Tamgho | |
| Silver | Osviel Hernández | |
| Bronze | Mohamed Yusuf Salman |
11 July
| Rank | Name | Nationality | Attempts | Result | Notes | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | ||||||||
| align=left | align=left | | 17.03 (w: -2.7 m/s) | 16.66 (w: -0.6 m/s) | 16.90 (w: -0.7 m/s) | 17.33 (w: -2.1 m/s) | 17.19 (w: -2.3 m/s) | 14.46 (w: -0.7 m/s) | 17.33 (w: -2.1 m/s) | ||||
| align=left | align=left | | 16.52 (w: -0.6 m/s) | 15.74 (w: -0.4 m/s) | 16.07 (w: -1.4 m/s) | 16.90 (w: -2.1 m/s) | 16.82 (w: -1.0 m/s) | 16.52 (w: -0.5 m/s) | 16.90 (w: -2.1 m/s) | ||||
| align=left | align=left | | 16.15 (w: -0.6 m/s) | 16.59 (w: -1.0 m/s) | 16.45 (w: -0.9 m/s) | x | 16.43 (w: -3.1 m/s) | 14.67 (w: -0.8 m/s) | 16.59 (w: -1.0 m/s) | ||||
| 4 | align=left | align=left |  | x | 16.14 (w: -1.0 m/s) | x | 13.46 (w: -0.6 m/s) | x | 16.33 (w: -1.2 m/s) | 16.33 (w: -1.2 m/s) | |||
| 5 | align=left | align=left |  | x | 15.96 (w: -0.6 m/s) | 16.22 (w: -1.6 m/s) | 16.29 (w: -0.8 m/s) | x | 16.04 (w: -0.5 m/s) | 16.29 (w: -0.8 m/s) | |||
| 6 | align=left | align=left |  | 15.75 (w: -1.6 m/s) | 15.70 (w: -0.8 m/s) | x | 15.58 (w: -1.1 m/s) | x | 15.78 (w: -1.3 m/s) | 15.78 (w: -1.3 m/s) | |||
| 7 | align=left | align=left |  | 15.31 (w: -0.7 m/s) | x | 15.54 (w: -1.1 m/s) | x | 15.63 (w: -1.5 m/s) | 13.12 (w: -1.3 m/s) | 15.63 (w: -1.5 m/s) | |||
| 8 | align=left | align=left | | x | 15.61 (w: -0.7 m/s) | x | 14.90 (w: -1.1 m/s) | 15.51 (w: -1.3 m/s) | 15.58 (w: -0.7 m/s) | 15.61 (w: -0.7 m/s) | |||
| 9 | align=left | align=left |  | 15.43 (w: -1.3 m/s) | 15.43 (w: -0.8 m/s) | x | 15.43 (w: -1.3 m/s) | ||||||
| 10 | align=left | align=left |  | x | x | 15.42 (w: -0.7 m/s) | 15.42 (w: -0.7 m/s) | ||||||
| 11 | align=left | align=left | | x | 15.39 (w: -0.6 m/s) | x | 15.39 (w: -0.6 m/s) | ||||||
| 12 | align=left | align=left |  | x | 15.36 (w: -0.7 m/s) | 13.70 (w: -2.5 m/s) | 15.36 (w: -0.7 m/s) | ||||||
10 July
| Rank | Name | Nationality | Attempts | Result | Notes | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||||||
| 1 | align=left | align=left | | x | 16.40 (w: 0.0 m/s) | - | 16.40 (w: 0.0 m/s) | Q | ||
| 2 | align=left | align=left | | 16.30 (w: -0.8 m/s) | - | - | 16.30 (w: -0.8 m/s) | Q | ||
| 3 | align=left | align=left | | 15.44 (w: -0.4 m/s) | 15.79 (w: -1.0 m/s) | x | 15.79 (w: -1.0 m/s) | q | ||
| 4 | align=left | align=left | | 15.67 (w: -1.2 m/s) | 15.56 (w: -0.5 m/s) | 15.57 (w: 0.0 m/s) | 15.67 (w: -1.2 m/s) | q | ||
| 5 | align=left | align=left | | 15.24 (w: -0.2 m/s) | x | 15.67 (w: -0.2 m/s) | 15.67 (w: -0.2 m/s) | q | ||
| 6 | align=left | align=left | | x | 15.14 (w: -0.2 m/s) | 15.58 (w: -0.2 m/s) | 15.58 (w: -0.2 m/s) | q | ||
| 7 | align=left | align=left |  | x | x | 15.48 (w: -0.6 m/s) | 15.48 (w: -0.6 m/s) | |||
| 8 | align=left | align=left |  | 15.38 (w: -0.2 m/s) | x | 15.42 (w: -0.6 m/s) | 15.42 (w: -0.6 m/s) | |||
| 9 | align=left | align=left | 13.52 (w: -1.2 m/s) | x | 15.32 (w: -0.1 m/s) | 15.32 (w: -0.1 m/s) | ||||
| 10 | align=left | align=left |  | 14.77 (w: -1.6 m/s) | 15.29 (w: -0.6 m/s) | 15.21 (w: -0.8 m/s) | 15.29 (w: -0.6 m/s) | |||
| 11 | align=left | align=left | 15.27 (w: -1.7 m/s) | 15.10 (w: -0.3 m/s) | 13.58 (w: -0.5 m/s) | 15.27 (w: -1.7 m/s) | ||||
| 12 | align=left | align=left | | x | 15.06 (w: -0.5 m/s) | x | 15.06 (w: -0.5 m/s) | |||
| align=left | align=left | x | x | x | NM | |||||
| Rank | Name | Nationality | Attempts | Result | Notes | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||||||
| 1 | align=left | align=left | | 16.30 (w: -0.7 m/s) | - | - | 16.30 (w: -0.7 m/s) | Q | ||
| 2 | align=left | align=left | | 15.94 (w: -2.0 m/s) | - | - | 15.94 (w: -2.0 m/s) | Q | ||
| 3 | align=left | align=left | | 15.75 (w: -1.3 m/s) | 13.55 (w: -0.4 m/s) | 15.46 (w: -0.5 m/s) | 15.75 (w: -1.3 m/s) | q | ||
| 4 | align=left | align=left | | x | x | 15.75 (w: 0.0 m/s) | 15.75 (w: 0.0 m/s) | q | ||
| 5 | align=left | align=left | | 15.47 (w: -1.6 m/s) | x | 15.63 (w: -0.2 m/s) | 15.63 (w: -0.2 m/s) | q | ||
| 6 | align=left | align=left | | x | 14.77 (w: -0.3 m/s) | 15.57 (w: -0.2 m/s) | 15.57 (w: -0.2 m/s) | q | ||
| 7 | align=left | align=left |  | 15.25 (w: -0.4 m/s) | x | 15.51 (w: -0.1 m/s) | 15.51 (w: -0.1 m/s) | |||
| 8 | align=left | align=left | | x | 15.51 (w: -0.6 m/s) | x | 15.51 (w: -0.6 m/s) | |||
| 9 | align=left | align=left | | x | x | 15.35 (w: -0.8 m/s) | 15.35 (w: -0.8 m/s) | |||
| 10 | align=left | align=left | 14.56 (w: -0.7 m/s) | 15.17 (w: -0.7 m/s) | 14.84 (w: -1.8 m/s) | 15.17 (w: -0.7 m/s) | ||||
| 11 | align=left | align=left | 15.01 (w: -2.0 m/s) | 14.91 (w: -0.6 m/s) | 14.90 (w: 0.0 m/s) | 15.01 (w: -2.0 m/s) | ||||
| 12 | align=left | align=left |  | x | 14.22 (w: -2.0 m/s) | x | 14.22 (w: -2.0 m/s) | |||
| align=left | align=left | x | x | x | NM | |||||
According to an unofficial count, 26 athletes from 20 countries participated in the event.