The women's discus throw event at the 1998 World Junior Championships in Athletics was held in Annecy, France, at Parc des Sports on 31 July and 1 August.
| Gold | Liu Fengying | |
| Silver | Mélina Robert-Michon | |
| Bronze | Lăcrămioara Ionescu |
1 August
| Rank | Name | Nationality | Attempts | Result | Notes | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | ||||||||
| align=left | align=left | | 59.21 | 60.66 | 59.91 | 58.60 | 59.19 | 58.65 | 60.66 | ||||
| align=left | align=left | | 51.90 | 53.47 | x | 55.01 | x | x | 55.01 | ||||
| align=left | align=left | | 53.87 | 52.55 | 52.92 | 52.81 | 54.64 | 50.89 | 54.64 | ||||
| 4 | align=left | align=left | | 51.51 | 51.51 | 49.39 | 53.01 | 50.67 | 53.20 | 53.20 | |||
| 5 | align=left | align=left | 50.93 | 53.17 | 52.90 | 51.16 | x | 47.05 | 53.17 | ||||
| 6 | align=left | align=left |  | 51.61 | 52.27 | 51.17 | 49.78 | x | 50.85 | 52.27 | |||
| 7 | align=left | align=left |  | x | 51.88 | 50.81 | 51.58 | x | x | 51.88 | |||
| 8 | align=left | align=left |  | 37.32 | 40.43 | 49.97 | 42.91 | x | x | 49.97 | |||
| 9 | align=left | align=left |  | 49.73 | 48.38 | 48.35 | 49.73 | ||||||
| 10 | align=left | align=left | | 49.14 | 46.01 | x | 49.14 | ||||||
| 11 | align=left | align=left | | 48.04 | 47.58 | x | 48.04 | ||||||
| 12 | align=left | align=left | 43.19 | x | 46.34 | 46.34 | |||||||
31 Jul
| Rank | Name | Nationality | Attempts | Result | Notes | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||||||
| 1 | align=left | align=left | 53.49 | - | - | 53.49 | Q | |||
| 2 | align=left | align=left | | x | 52.11 | - | 52.11 | Q | ||
| 3 | align=left | align=left | | 51.86 | - | - | 51.86 | Q | ||
| 4 | align=left | align=left | | 49.83 | 47.10 | 49.86 | 49.86 | q | ||
| 5 | align=left | align=left | | x | x | 49.84 | 49.84 | q | ||
| 6 | align=left | align=left | | 47.23 | 49.46 | 49.15 | 49.46 | q | ||
| 7 | align=left | align=left | 45.16 | 47.10 | 45.01 | 47.10 | q | |||
| 8 | align=left | align=left |  | 38.37 | 41.26 | 45.13 | 45.13 | |||
| 9 | align=left | align=left | | 42.61 | x | 43.82 | 43.82 | |||
| Rank | Name | Nationality | Attempts | Result | Notes | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||||||
| 1 | align=left | align=left | | 53.67 | - | - | 53.67 | Q | ||
| 2 | align=left | align=left | | 52.94 | - | - | 52.94 | Q | ||
| 3 | align=left | align=left | | x | 52.36 | - | 52.36 | Q | ||
| 4 | align=left | align=left | | 51.53 | - | - | 51.53 | Q | ||
| 5 | align=left | align=left | | 49.61 | x | x | 49.61 | q | ||
| 6 | align=left | align=left | 45.36 | x | 46.71 | 46.71 | ||||
| 7 | align=left | align=left | 44.62 | 41.10 | x | 44.62 | ||||
| 8 | align=left | align=left |  | x | 41.24 | 40.76 | 41.24 | |||
| 9 | align=left | align=left | x | 35.28 | 35.76 | 35.76 | ||||
According to an unofficial count, 18 athletes from 14 countries participated in the event.