The men's javelin throw event at the 2002 World Junior Championships in Athletics was held in Kingston, Jamaica, at National Stadium on 19 and 21 July.
| Gold | Igor Janik | |
| Silver | Vladislav Shkurlatov | |
| Bronze | Jung Sang-Jin |
21 July
| Rank | Name | Nationality | Attempts | Result | Notes | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | ||||||||
| align=left | align=left | | 74.16 | 69.46 | 67.63 | 69.68 | 69.69 | x | 74.16 | ||||
| align=left | align=left | | 69.99 | 68.41 | 70.31 | 69.26 | 71.85 | 74.09 | 74.09 | ||||
| align=left | align=left | | 73.99 | x | 67.04 | 73.13 | 72.98 | x | 73.99 | ||||
| 4 | align=left | align=left |  | 70.55 | 70.22 | 71.04 | 73.31 | 71.59 | 71.22 | 73.31 | |||
| 5 | align=left | align=left |  | 68.58 | x | 72.70 | x | x | 67.77 | 72.70 | |||
| 6 | align=left | align=left |  | 70.62 | 67.43 | 71.80 | 70.37 | 70.04 | 72.29 | 72.29 | |||
| 7 | align=left | align=left | | 70.06 | 68.00 | 65.75 | 70.98 | x | 69.98 | 70.98 | |||
| 8 | align=left | align=left |  | 70.90 | 66.88 | 65.27 | 67.26 | x | 70.29 | 70.90 | |||
| 9 | align=left | align=left |  | x | 64.44 | 68.76 | 68.76 | ||||||
| 10 | align=left | align=left |  | 68.47 | 66.55 | x | 68.47 | ||||||
| 11 | align=left | align=left | 68.14 | 63.69 | 67.97 | 68.14 | |||||||
| 12 | align=left | align=left |  | 63.95 | 67.38 | x | 67.38 | ||||||
19 Jul
| Rank | Name | Nationality | Attempts | Result | Notes | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||||||
| 1 | align=left | align=left | | 73.31 | - | - | 73.31 | Q | ||
| 2 | align=left | align=left | | 68.63 | 70.63 | - | 70.63 | Q | ||
| 3 | align=left | align=left | | 69.18 | 66.38 | 70.62 | 70.62 | Q | ||
| 4 | align=left | align=left | | 70.52 | - | - | 70.52 | Q | ||
| 5 | align=left | align=left | 70.01 | - | - | 70.01 | Q | |||
| 6 | align=left | align=left | | 66.64 | x | 68.41 | 68.41 | q | ||
| 7 | align=left | align=left | 65.02 | 67.68 | 66.77 | 67.68 | ||||
| 8 | align=left | align=left |  | 63.31 | 64.55 | 65.30 | 65.30 | |||
| 9 | align=left | align=left |  | 65.20 | 63.17 | 61.81 | 65.20 | |||
| 10 | align=left | align=left | | 63.97 | x | x | 63.97 | |||
| 11 | align=left | align=left |  | 62.71 | x | 63.72 | 63.72 | |||
| 12 | align=left | align=left | x | 59.89 | 56.13 | 59.89 | ||||
| 13 | align=left | align=left |  | x | 58.05 | 59.09 | 59.09 | |||
| 14 | align=left | align=left |  | 57.05 | 52.16 | 54.36 | 57.05 | |||
| Rank | Name | Nationality | Attempts | Result | Notes | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||||||
| 1 | align=left | align=left | | 73.84 | - | - | 73.84 | Q | ||
| 2 | align=left | align=left | | 72.17 | - | - | 72.17 | Q | ||
| 3 | align=left | align=left | | 71.59 | - | - | 71.59 | Q | ||
| 4 | align=left | align=left | | 68.26 | 68.01 | 71.50 | 71.50 | Q | ||
| 5 | align=left | align=left | | 70.96 | - | - | 70.96 | Q | ||
| 6 | align=left | align=left | | 69.85 | x | 65.84 | 69.85 | q | ||
| 7 | align=left | align=left |  | 68.22 | 67.77 | 66.24 | 68.22 | |||
| 8 | align=left | align=left | 64.44 | 63.52 | 66.88 | 66.88 | ||||
| 9 | align=left | align=left |  | 62.37 | 62.40 | 65.33 | 65.33 | |||
| 10 | align=left | align=left | | 64.94 | 61.75 | 58.25 | 64.94 | |||
| 11 | align=left | align=left |  | 62.57 | 59.34 | 61.85 | 62.57 | |||
| 12 | align=left | align=left |  | x | 58.57 | 60.25 | 60.25 | |||
| 13 | align=left | align=left | | 58.27 | 58.51 | 55.81 | 58.51 | |||
| 14 | align=left | align=left |  | 57.17 | 56.31 | 57.62 | 57.62 | |||
| 15 | align=left | align=left |  | 50.56 | 49.29 | 54.85 | 54.85 | |||
According to an unofficial count, 29 athletes from 25 countries participated in the event.