The women's discus throw event at the 1988 World Junior Championships in Athletics was held in Sudbury, Ontario, Canada, at Laurentian University Stadium on 30 and 31 July.
| Gold | Ilke Wyludda | |
| Silver | Astrid Kumbernuss | |
| Bronze | Proletka Voycheva |
31 July
| Rank | Name | Nationality | Result | Notes | |||
|---|---|---|---|---|---|---|---|
| align=left | align=left | 68.24 | |||||
| align=left | align=left | 64.08 | |||||
| align=left | align=left | 58.94 | |||||
| 4 | align=left | align=left |  | 56.90 | |||
| 5 | align=left | align=left | 54.32 | ||||
| 6 | align=left | align=left | | 53.98 | |||
| 7 | align=left | align=left | 53.38 | ||||
| 8 | align=left | align=left |  | 53.28 | |||
| 9 | align=left | align=left | 48.36 | ||||
| 10 | align=left | align=left | 48.02 | ||||
| 11 | align=left | align=left |  | 43.74 | |||
| 12 | align=left | align=left |  | 42.40 |
30 Jul
| Rank | Name | Nationality | Result | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | 65.78 | Q | |||
| 2 | align=left | align=left | 61.28 | Q | |||
| 3 | align=left | align=left | 52.20 | Q | |||
| 4 | align=left | align=left | | 52.08 | Q | ||
| 5 | align=left | align=left | | 52.06 | Q | ||
| 6 | align=left | align=left | 51.38 | Q | |||
| 7 | align=left | align=left | | 51.08 | Q | ||
| 8 | align=left | align=left | 50.84 | Q | |||
| 9 | align=left | align=left | 48.54 | Q | |||
| 10 | align=left | align=left | 47.72 | Q | |||
| 11 | align=left | align=left | | 47.32 | Q | ||
| 12 | align=left | align=left | | 46.54 | q | ||
| 13 | align=left | align=left |  | 46.42 | |||
| 14 | align=left | align=left | | 45.68 | |||
| 15 | align=left | align=left |  | 45.62 | |||
| 16 | align=left | align=left | | 44.08 |
According to an unofficial count, 16 athletes from 11 countries participated in the event.