The women's discus throw event at the 2008 World Junior Championships in Athletics was held in Bydgoszcz, Poland, at Zawisza Stadium on 11 and 13 July.
| Gold | Xi Shangxue | |
| Silver | Julia Fischer | |
| Bronze | Sandra Perković |
13 July
| Rank | Name | Nationality | Attempts | Result | Notes | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | ||||||||
| align=left | align=left | | 48.23 | 51.58 | 54.96 | 54.50 | x | 53.15 | 54.96 | ||||
| align=left | align=left | 51.29 | 54.69 | 50.78 | 53.42 | x | x | 54.69 | |||||
| align=left | align=left | 50.98 | 53.60 | 52.91 | 53.62 | 54.24 | 51.22 | 54.24 | |||||
| 4 | align=left | align=left | 52.07 | 52.34 | x | x | x | x | 52.34 | ||||
| 5 | align=left | align=left |  | x | 49.21 | 51.26 | 50.96 | 48.91 | 49.43 | 51.26 | |||
| 6 | align=left | align=left |  | 39.15 | 45.30 | 51.16 | 45.97 | 50.12 | 48.48 | 51.16 | |||
| 7 | align=left | align=left |  | 49.10 | 49.46 | 39.11 | 42.80 | 44.98 | 45.82 | 49.46 | |||
| 8 | align=left | align=left |  | 45.53 | 49.31 | x | x | 44.80 | 47.99 | 49.31 | |||
| 9 | align=left | align=left | | x | 48.92 | 48.35 | 48.92 | ||||||
| 10 | align=left | align=left | | 48.50 | x | 43.62 | 48.50 | ||||||
| 11 | align=left | align=left | | 48.45 | 47.16 | 46.23 | 48.45 | ||||||
| 12 | align=left | align=left | 47.08 | x | 42.70 | 47.08 | |||||||
11 July
| Rank | Name | Nationality | Attempts | Result | Notes | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||||||
| 1 | align=left | align=left | x | 51.97 | x | 51.97 | q | |||
| 2 | align=left | align=left | | 44.40 | 50.50 | x | 50.50 | q | ||
| 3 | align=left | align=left | | 50.20 | x | 48.08 | 50.20 | q | ||
| 4 | align=left | align=left | | 46.86 | 50.13 | x | 50.13 | q | ||
| 5 | align=left | align=left | | x | 46.47 | 49.95 | 49.95 | q | ||
| 6 | align=left | align=left |  | 46.48 | 45.18 | 48.32 | 48.32 | |||
| 7 | align=left | align=left | 46.62 | 48.15 | 45.35 | 48.15 | ||||
| 8 | align=left | align=left |  | 48.13 | x | 46.23 | 48.13 | |||
| 9 | align=left | align=left |  | 46.95 | 48.12 | x | 48.12 | |||
| 10 | align=left | align=left |  | 47.44 | x | 44.30 | 47.44 | |||
| 11 | align=left | align=left |  | 44.18 | 44.07 | 45.45 | 45.45 | |||
| 12 | align=left | align=left |  | 44.72 | 42.04 | x | 44.72 | |||
| 13 | align=left | align=left |  | 44.42 | x | x | 44.42 | |||
| 14 | align=left | align=left |  | 44.32 | 43.25 | 42.64 | 44.32 | |||
| 15 | align=left | align=left |  | x | 41.30 | x | 41.30 | |||
| 16 | align=left | align=left |  | 39.95 | x | 40.77 | 40.77 | |||
| align=left | align=left |  | x | x | x | NM | ||||
| Rank | Name | Nationality | Attempts | Result | Notes | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||||||
| 1 | align=left | align=left | | x | 49.09 | 54.02 | 54.02 | Q | ||
| 2 | align=left | align=left | 49.51 | 52.71 | 46.42 | 52.71 | q | |||
| 3 | align=left | align=left | 51.95 | x | 51.42 | 51.95 | q | |||
| 4 | align=left | align=left | 51.56 | x | x | 51.56 | q | |||
| 5 | align=left | align=left | | 51.33 | 44.43 | 40.72 | 51.33 | q | ||
| 6 | align=left | align=left | | x | 51.30 | 49.41 | 51.30 | q | ||
| 7 | align=left | align=left | | x | 46.68 | 50.01 | 50.01 | q | ||
| 8 | align=left | align=left | | 46.58 | 48.13 | 48.13 | 48.13 | |||
| 9 | align=left | align=left |  | 46.22 | 47.62 | x | 47.62 | |||
| 10 | align=left | align=left | | 43.76 | 47.46 | x | 47.46 | |||
| 11 | align=left | align=left |  | 47.06 | 46.68 | 45.84 | 47.06 | |||
| 12 | align=left | align=left | | 38.63 | 40.49 | 47.02 | 47.02 | |||
| 13 | align=left | align=left | 35.51 | 42.93 | 45.62 | 45.62 | ||||
| 14 | align=left | align=left | | 45.09 | 44.90 | x | 45.09 | |||
| 15 | align=left | align=left | | 43.90 | x | 41.28 | 43.90 | |||
| 16 | align=left | align=left | | 41.48 | 43.53 | x | 43.53 | |||
| align=left | align=left | x | x | x | NM | |||||
According to an unofficial count, 34 athletes from 24 countries participated in the event.