The men's discus throw event at the 2002 World Junior Championships in Athletics was held in Kingston, Jamaica, at National Stadium on 17 and 18 July. A 1.75 kg (junior implement) discus was used.
| Gold | Wu Tao | |
| Silver | Dmitriy Sivakov | |
| Bronze | Michał Hodun |
18 July
| Rank | Name | Nationality | Attempts | Result | Notes | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | ||||||||
| align=left | align=left | | x | 59.68 | 64.51 | x | 62.95 | x | 64.51 | ||||
| align=left | align=left | | x | 59.54 | 62.00 | 61.62 | 60.52 | x | 62.00 | ||||
| align=left | align=left | | 60.60 | 61.74 | 60.79 | 61.35 | x | 58.49 | 61.74 | ||||
| 4 | align=left | align=left |  | 60.02 | 60.56 | 61.21 | x | x | x | 61.21 | |||
| 5 | align=left | align=left |  | x | 53.87 | 60.86 | x | 58.12 | x | 60.86 | |||
| 6 | align=left | align=left | | 58.16 | 60.46 | x | 57.03 | 57.12 | 57.78 | 60.46 | |||
| 7 | align=left | align=left |  | 57.58 | 59.43 | 58.54 | 57.99 | 55.68 | x | 59.43 | |||
| 8 | align=left | align=left |  | 53.79 | x | 59.21 | x | x | x | 59.21 | |||
| 9 | align=left | align=left |  | 57.89 | 59.18 | 58.66 | 59.18 | ||||||
| 10 | align=left | align=left |  | 58.20 | 56.28 | 57.88 | 58.20 | ||||||
| 11 | align=left | align=left |  | x | 57.87 | 57.17 | 57.87 | ||||||
| 12 | align=left | align=left |  | 50.46 | 54.46 | x | 54.46 | ||||||
17 Jul
| Rank | Name | Nationality | Attempts | Result | Notes | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||||||
| 1 | align=left | align=left | | x | x | 61.03 | 61.03 | Q | ||
| 2 | align=left | align=left | | 59.90 | - | - | 59.90 | Q | ||
| 3 | align=left | align=left | | 54.84 | 58.81 | x | 58.81 | q | ||
| 4 | align=left | align=left | | 52.64 | 58.38 | 58.50 | 58.50 | q | ||
| 5 | align=left | align=left | | 55.81 | 57.74 | x | 57.74 | q | ||
| 6 | align=left | align=left | | 57.31 | x | x | 57.31 | q | ||
| 7 | align=left | align=left | | 56.15 | 56.68 | 57.18 | 57.18 | q | ||
| 8 | align=left | align=left | x | 56.23 | 55.86 | 56.23 | ||||
| 9 | align=left | align=left | x | 55.22 | x | 55.22 | ||||
| 10 | align=left | align=left |  | 51.29 | 54.85 | 54.75 | 54.85 | |||
| 11 | align=left | align=left | | 53.56 | 53.90 | x | 53.90 | |||
| 12 | align=left | align=left |  | 51.29 | 48.74 | 49.68 | 51.29 | |||
| 13 | align=left | align=left |  | x | 50.58 | x | 50.58 | |||
| 14 | align=left | align=left |  | 47.81 | 50.28 | 48.73 | 50.28 | |||
| 15 | align=left | align=left |  | 46.69 | 43.86 | 43.83 | 46.69 | |||
| 16 | align=left | align=left |  | x | x | 46.52 | 46.52 | |||
| 17 | align=left | align=left | 44.23 | x | x | 44.23 | ||||
| Rank | Name | Nationality | Attempts | Result | Notes | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||||||
| 1 | align=left | align=left | | 53.07 | 60.84 | - | 60.84 | Q | ||
| 2 | align=left | align=left | | 56.55 | 56.37 | 58.07 | 58.07 | q | ||
| 3 | align=left | align=left | | 57.81 | x | 56.64 | 57.81 | q | ||
| 4 | align=left | align=left | | 55.97 | 56.93 | 52.38 | 56.93 | q | ||
| 5 | align=left | align=left | | 55.16 | 49.37 | 56.47 | 56.47 | q | ||
| 6 | align=left | align=left |  | 51.63 | x | 55.39 | 55.39 | |||
| 7 | align=left | align=left | 54.36 | x | 52.70 | 54.36 | ||||
| 8 | align=left | align=left |  | 53.15 | 53.69 | 49.29 | 53.69 | |||
| 9 | align=left | align=left | | 53.28 | 51.46 | 53.58 | 53.58 | |||
| 10 | align=left | align=left | 52.41 | 53.03 | 51.91 | 53.03 | ||||
| 11 | align=left | align=left | 52.95 | x | x | 52.95 | ||||
| 12 | align=left | align=left | | x | x | 51.71 | 51.71 | |||
| 13 | align=left | align=left | x | 45.71 | 51.12 | 51.12 | ||||
| 14 | align=left | align=left | 50.74 | x | x | 50.74 | ||||
| 15 | align=left | align=left | 50.27 | x | x | 50.27 | ||||
| 16 | align=left | align=left |  | 44.21 | x | 48.38 | 48.38 | |||
| 17 | align=left | align=left |  | x | 41.89 | 42.31 | 42.31 | |||
According to an unofficial count, 34 athletes from 28 countries participated in the event.