The women's discus throw event at the 2002 World Junior Championships in Athletics was held in Kingston, Jamaica, at National Stadium on 18 and 19 July.
| Gold | Ma Xuejun | |
| Silver | Xu Shaoyang | |
| Bronze | Seema Antil |
19 July
| Rank | Name | Nationality | Attempts | Result | Notes | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | ||||||||
| align=left | align=left | | 56.83 | 57.69 | 56.91 | 58.85 | 53.27 | 57.49 | 58.85 | ||||
| align=left | align=left | | 55.70 | x | 53.90 | 55.87 | 57.14 | 57.87 | 57.87 | ||||
| align=left | align=left | | 54.99 | 54.26 | x | 55.83 | 53.75 | 53.20 | 55.83 | ||||
| 4 | align=left | align=left | x | 54.82 | x | 52.55 | 49.14 | 54.45 | 54.82 | ||||
| 5 | align=left | align=left |  | 52.66 | 49.97 | x | 48.09 | x | 49.05 | 52.66 | |||
| 6 | align=left | align=left |  | 45.09 | 51.01 | x | 49.43 | 52.13 | x | 52.13 | |||
| 7 | align=left | align=left | 47.53 | 51.99 | 49.89 | 49.80 | 50.08 | 47.71 | 51.99 | ||||
| 8 | align=left | align=left |  | x | 43.70 | 51.03 | 49.87 | 50.71 | 51.98 | 51.98 | |||
| 9 | align=left | align=left | 50.85 | x | 48.03 | 50.85 | |||||||
| 10 | align=left | align=left |  | 46.67 | x | 48.38 | 48.38 | ||||||
| 11 | align=left | align=left |  | 46.94 | 48.12 | 47.63 | 48.12 | ||||||
| 12 | align=left | align=left | 35.57 | 44.30 | x | 44.30 | |||||||
18 Jul
| Rank | Name | Nationality | Attempts | Result | Notes | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||||||
| 1 | align=left | align=left | 54.15 | - | - | 54.15 | Q | |||
| 2 | align=left | align=left | | 53.61 | - | - | 53.61 | Q | ||
| 3 | align=left | align=left | | 53.21 | - | - | 53.21 | Q | ||
| 4 | align=left | align=left | | x | 52.52 | - | 52.52 | Q | ||
| 5 | align=left | align=left | | 50.95 | - | - | 50.95 | Q | ||
| 6 | align=left | align=left | 48.69 | - | - | 48.69 | Q | |||
| 7 | align=left | align=left | | x | 47.73 | 47.68 | 47.73 | q | ||
| 8 | align=left | align=left | | x | 47.60 | x | 47.60 | q | ||
| 9 | align=left | align=left | | 46.99 | 44.92 | 43.46 | 46.99 | q | ||
| 10 | align=left | align=left | 40.35 | 40.59 | 44.98 | 44.98 | q | |||
| 11 | align=left | align=left | | 41.42 | x | 44.77 | 44.77 | q | ||
| 12 | align=left | align=left | x | 43.73 | 39.81 | 43.73 | q | |||
| 13 | align=left | align=left | x | x | 43.66 | 43.66 | ||||
| 14 | align=left | align=left |  | x | 37.44 | 39.68 | 39.68 | |||
| 15 | align=left | align=left |  | 35.77 | x | 36.75 | 36.75 | |||
| align=left | align=left | | x | x | x | NM | ||||
According to an unofficial count, 16 athletes from 13 countries participated in the event.