The men's javelin throw event at the 2003 European Athletics U23 Championships was held in Bydgoszcz, Poland, at Zawisza Stadion on 18 and 20 July.
| Gold | Aleksandr Ivanov | |
| Silver | Igor Janik | |
| Bronze | Tero Pitkämäki |
20 July
| Rank | Name | Nationality | Attempts | Result | Notes | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | ||||||||
| align=left | align=left | | 80.66 | 79.91 | 82.59 | x | x | x | 82.59 | ||||
| align=left | align=left | | 82.54 | 79.18 | – | – | 78.22 | x | 82.54 | ||||
| align=left | align=left | | 78.21 | 77.81 | 74.85 | 75.60 | 78.84 | 77.81 | 78.84 | ||||
| 4 | align=left | align=left |  | 76.95 | 76.38 | 72.33 | 75.52 | x | 74.33 | 76.95 | |||
| 5 | align=left | align=left | 69.76 | 70.61 | 76.72 | 73.75 | 74.89 | x | 76.72 | ||||
| 6 | align=left | align=left | 68.56 | 67.06 | 72.68 | 70.77 | 69.83 | x | 72.68 | ||||
| 7 | align=left | align=left | 72.39 | 69.94 | 69.03 | x | x | 69.26 | 72.39 | ||||
| 8 | align=left | align=left | 65.01 | x | 68.21 | 65.49 | 68.43 | 67.59 | 68.43 | ||||
| 9 | align=left | align=left | x | 67.41 | 63.42 | 67.41 | |||||||
| 10 | align=left | align=left |  | x | 64.15 | 67.08 | 67.08 | ||||||
| 11 | align=left | align=left | | x | 66.80 | x | 66.80 | ||||||
| 12 | align=left | align=left |  | x | x | 63.94 | 63.94 | ||||||
18 July
Qualifying 77.50 or 12 best to the Final
| Rank | Name | Nationality | Result | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 76.15 | q | ||
| 2 | align=left | align=left | | 75.77 | q | ||
| 3 | align=left | align=left | 74.61 | q | |||
| 4 | align=left | align=left | 73.07 | q | |||
| 5 | align=left | align=left | | 70.79 | q | ||
| 6 | align=left | align=left | | 70.64 | q | ||
| 7 | align=left | align=left | | 70.61 | |||
| 8 | align=left | align=left |  | 68.30 | |||
| 9 | align=left | align=left |  | 66.71 | |||
| 10 | align=left | align=left |  | 65.61 |
| Rank | Name | Nationality | Result | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 78.99 | Q | ||
| 2 | align=left | align=left | | 74.42 | q | ||
| 3 | align=left | align=left | 71.74 | q | |||
| 4 | align=left | align=left | 71.50 | q | |||
| 5 | align=left | align=left | 71.35 | q | |||
| 6 | align=left | align=left | | 71.17 | q | ||
| 7 | align=left | align=left | 70.44 | ||||
| 8 | align=left | align=left | | 69.19 | |||
| 9 | align=left | align=left | | 66.81 | |||
| 10 | align=left | align=left |  | 63.05 |
According to an unofficial count, 20 athletes from 14 countries participated in the event.
(1) (1) (3) (2) (1) (1) (1) (1) (1) (2)