The men's shot put event at the 2004 World Junior Championships in Athletics was held in Grosseto, Italy, at Stadio Olimpico Carlo Zecchini on 13 July. A 6 kg (junior implement) shot was used.
| Gold | Georgi Ivanov | |
| Silver | Jakub Giża | |
| Bronze | Aleksandr Grekov |
13 July
| Rank | Name | Nationality | Attempts | Result | Notes | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | ||||||||
| align=left | align=left | 19.76 | 20.02 | 19.85 | 20.70 | x | x | 20.70 | |||||
| align=left | align=left | | 17.76 | 19.41 | 19.68 | 18.91 | 19.73 | 20.05 | 20.05 | ||||
| align=left | align=left | | 19.70 | 19.34 | x | x | 19.80 | 19.98 | 19.98 | ||||
| 4 | align=left | align=left | x | 19.65 | x | 19.80 | 19.11 | x | 19.80 | ||||
| 5 | align=left | align=left |  | x | x | 18.80 | x | 19.11 | 19.22 | 19.22 | |||
| 6 | align=left | align=left | 18.92 | x | x | x | 19.15 | x | 19.15 | ||||
| 7 | align=left | align=left | | 18.37 | 18.21 | 18.79 | 19.12 | 18.88 | 18.37 | 19.12 | |||
| 8 | align=left | align=left |  | 17.85 | 19.03 | x | x | 18.66 | 18.66 | 19.03 | |||
| 9 | align=left | align=left |  | 18.17 | 18.56 | 18.31 | 18.56 | ||||||
| 10 | align=left | align=left |  | x | 17.91 | 18.44 | 18.44 | ||||||
| 11 | align=left | align=left |  | 18.23 | x | x | 18.23 | ||||||
| 12 | align=left | align=left | | x | 17.12 | 18.10 | 18.10 | ||||||
13 July
| Rank | Name | Nationality | Attempts | Result | Notes | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||||||
| 1 | align=left | align=left | 19.64 | - | - | 19.64 | Q | |||
| 2 | align=left | align=left | | x | x | 18.81 | 18.81 | q | ||
| 3 | align=left | align=left | 18.79 | x | x | 18.79 | q | |||
| 4 | align=left | align=left | | 18.04 | 18.30 | 18.75 | 18.75 | q | ||
| 5 | align=left | align=left | | 18.42 | 18.73 | x | 18.73 | q | ||
| 6 | align=left | align=left | | 18.49 | x | 18.20 | 18.49 | q | ||
| 7 | align=left | align=left |  | x | x | 18.44 | 18.44 | |||
| 8 | align=left | align=left | 17.87 | 17.40 | 18.14 | 18.14 | ||||
| 9 | align=left | align=left |  | 17.62 | 17.46 | 18.05 | 18.05 | |||
| 10 | align=left | align=left |  | 17.39 | 18.03 | 17.42 | 18.03 | |||
| 11 | align=left | align=left |  | 17.59 | 17.94 | 17.86 | 17.94 | |||
| 12 | align=left | align=left |  | 17.35 | 17.37 | x | 17.37 | |||
| 13 | align=left | align=left |  | x | 17.32 | 17.28 | 17.32 | |||
| 14 | align=left | align=left |  | 16.69 | 17.09 | 16.54 | 17.09 | |||
| 15 | align=left | align=left | 16.71 | x | x | 16.71 | ||||
| 16 | align=left | align=left |  | x | x | 16.64 | 16.64 | |||
| align=left | align=left | x | x | x | NM | |||||
| Rank | Name | Nationality | Attempts | Result | Notes | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||||||
| 1 | align=left | align=left | 18.82 | 19.78 | - | 19.78 | Q | |||
| 2 | align=left | align=left | | 18.91 | 19.02 | - | 19.02 | Q | ||
| 3 | align=left | align=left | | 18.92 | x | 18.25 | 18.92 | q | ||
| 4 | align=left | align=left | | x | x | 18.69 | 18.69 | q | ||
| 5 | align=left | align=left | | x | 18.65 | x | 18.65 | q | ||
| 6 | align=left | align=left | | 18.62 | x | 18.03 | 18.62 | q | ||
| 7 | align=left | align=left | 18.23 | 18.35 | 18.48 | 18.48 | ||||
| 8 | align=left | align=left | | 17.53 | 17.48 | 18.19 | 18.19 | |||
| 9 | align=left | align=left | 18.11 | x | x | 18.11 | ||||
| 10 | align=left | align=left | x | 17.87 | 17.84 | 17.87 | ||||
| 11 | align=left | align=left | | 17.62 | x | 17.82 | 17.82 | |||
| 12 | align=left | align=left | 16.80 | 16.84 | 17.69 | 17.69 | ||||
| 13 | align=left | align=left |  | 17.40 | x | 17.54 | 17.54 | |||
| 14 | align=left | align=left |  | 17.34 | 17.16 | 17.50 | 17.50 | |||
| 15 | align=left | align=left | | 16.66 | x | x | 16.66 | |||
| align=left | align=left | x | x | x | NM | |||||
According to an unofficial count, 33 athletes from 25 countries participated in the event.