The women's triple jump event at the 1998 World Junior Championships in Athletics was held in Annecy, France, at Parc des Sports on 1 and 2 August.
| Gold | Baya Rahouli | |
| Silver | Mariana Solomon | |
| Bronze | Marija Martinović |
2 August
| Rank | Name | Nationality | Attempts | Result | Notes | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | ||||||||
| align=left | align=left | 13.45 (w: -1.1 m/s) | 13.46 (w: -0.4 m/s) | 13.74 (w: -0.1 m/s) | 13.65 (w: -0.6 m/s) | 14.04 (w: -0.3 m/s) | x | 14.04 (w: -0.3 m/s) | |||||
| align=left | align=left | | 13.65 (w: -0.9 m/s) | 13.44 (w: -0.3 m/s) | x | 13.48 (w: +0.6 m/s) | 13.75 (w: +0.3 m/s) | 11.83 (w: -0.1 m/s) | 13.75 (w: +0.3 m/s) | ||||
| align=left | align=left | 13.15 (w: -1.0 m/s) | 13.05 (w: -0.7 m/s) | 13.29 (w: -0.5 m/s) | 13.47 (w: +0.4 m/s) | 13.36 (w: -0.1 m/s) | 13.15 (w: +0.1 m/s) | 13.47 (w: +0.4 m/s) | |||||
| 4 | align=left | align=left |  | 13.28 (w: -0.8 m/s) | x | 11.88 (w: -0.2 m/s) | x | x | 13.41 (w: +0.6 m/s) | 13.41 (w: +0.6 m/s) | |||
| 5 | align=left | align=left | | 13.17 (w: -0.4 m/s) | 12.76 (w: -1.3 m/s) | x | 12.92 (w: -0.4 m/s) | x | 12.80 (w: +1.2 m/s) | 13.17 (w: -0.4 m/s) | |||
| 6 | align=left | align=left |  | 12.83 (w: -1.2 m/s) | 12.97 (w: -0.2 m/s) | 13.12 (w: +0.9 m/s) | 12.90 (w: -1.6 m/s) | 11.19 (w: +0.5 m/s) | x | 13.12 (w: +0.9 m/s) | |||
| 7 | align=left | align=left |  | 13.08 (w: -1.1 m/s) | 12.96 (w: -1.3 m/s) | 12.79 (w: 0.0 m/s) | 12.82 (w: +0.5 m/s) | 13.02 (w: +0.8 m/s) | x | 13.08 (w: -1.1 m/s) | |||
| 8 | align=left | align=left |  | 13.05 (w: -0.8 m/s) | x | 12.96 (w: -1.1 m/s) | 12.54 (w: -0.2 m/s) | x | 12.90 (w: -0.6 m/s) | 13.05 (w: -0.8 m/s) | |||
| 9 | align=left | align=left |  | 12.95 (w: -1.5 m/s) | 12.89 (w: -1.1 m/s) | 12.92 (w: +0.4 m/s) | 12.95 (w: -1.5 m/s) | ||||||
| 10 | align=left | align=left |  | 12.85 (w: -0.3 m/s) | x | 12.88 (w: +0.3 m/s) | 12.88 (w: +0.3 m/s) | ||||||
| 11 | align=left | align=left | | 12.73 (w: -0.6 m/s) | x | x | 12.73 (w: -0.6 m/s) | ||||||
| 12 | align=left | align=left |  | 12.62 (w: -1.2 m/s) | 12.58 (w: -0.4 m/s) | 12.70 (w: -0.5 m/s) | 12.70 (w: -0.5 m/s) | ||||||
1 Aug
| Rank | Name | Nationality | Attempts | Result | Notes | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||||||
| 1 | align=left | align=left | | 13.09 (w: +0.6 m/s) | 12.96 (w: -1.7 m/s) | x | 13.09 (w: +0.6 m/s) | q | ||
| 2 | align=left | align=left | | 13.01 (w: -1.2 m/s) | 13.02 (w: +0.5 m/s) | 13.08 (w: -0.7 m/s) | 13.08 (w: -0.7 m/s) | q | ||
| 3 | align=left | align=left | | 13.05 (w: -1.1 m/s) | 12.67 (w: -1.5 m/s) | 12.83 (w: 0.0 m/s) | 13.05 (w: -1.1 m/s) | q | ||
| 4 | align=left | align=left | | 13.04 (w: -0.3 m/s) | x | 12.59 (w: +0.1 m/s) | 13.04 (w: -0.3 m/s) | q | ||
| 5 | align=left | align=left | | 12.91 (w: -2.2 m/s) | 12.96 (w: -0.3 m/s) | 12.78 (w: -0.4 m/s) | 12.96 (w: -0.3 m/s) | q | ||
| 6 | align=left | align=left | 12.84 (w: -0.7 m/s) | x | 12.46 (w: -0.4 m/s) | 12.84 (w: -0.7 m/s) | ||||
| 7 | align=left | align=left |  | 12.42 (w: +0.4 m/s) | 12.74 (w: -1.8 m/s) | x | 12.74 (w: -1.8 m/s) | |||
| 8 | align=left | align=left |  | x | 12.40 (w: -1.5 m/s) | 12.33 (w: +0.2 m/s) | 12.40 (w: -1.5 m/s) | |||
| 9 | align=left | align=left |  | 12.38 (w: -0.4 m/s) | x | x | 12.38 (w: -0.4 m/s) | |||
| 10 | align=left | align=left |  | 11.79 (w: -0.2 m/s) | 11.94 (w: +0.7 m/s) | 11.93 (w: -0.5 m/s) | 11.94 (w: +0.7 m/s) | |||
| Rank | Name | Nationality | Attempts | Result | Notes | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||||||
| 1 | align=left | align=left | 13.90 (w: +1.6 m/s) | - | - | 13.90 (w: +1.6 m/s) | Q | |||
| 2 | align=left | align=left | 12.60 (w: -0.7 m/s) | 13.45 (w: -0.2 m/s) | - | 13.45 (w: -0.2 m/s) | Q | |||
| 3 | align=left | align=left | | 12.97 (w: -0.2 m/s) | 13.19 (w: +1.0 m/s) | 11.72 (w: -0.3 m/s) | 13.19 (w: +1.0 m/s) | q | ||
| 4 | align=left | align=left | | 12.95 (w: -0.9 m/s) | 12.62 (w: -0.3 m/s) | 13.01 (w: -0.2 m/s) | 13.01 (w: -0.2 m/s) | q | ||
| 5 | align=left | align=left | | 12.99 (w: -0.8 m/s) | 12.39 (w: -0.9 m/s) | 12.73 (w: -0.5 m/s) | 12.99 (w: -0.8 m/s) | q | ||
| 6 | align=left | align=left | | 12.72 (w: -1.1 m/s) | 12.91 (w: 0.0 m/s) | 12.91 (w: -0.4 m/s) | 12.91 (w: 0.0 m/s) | q | ||
| 7 | align=left | align=left | | 11.32 (w: -0.5 m/s) | 12.32 (w: -1.2 m/s) | 12.85 (w: -1.7 m/s) | 12.85 (w: -1.7 m/s) | q | ||
| 8 | align=left | align=left | | 12.26 (w: -0.2 m/s) | 12.62 (w: -0.9 m/s) | x | 12.62 (w: -0.9 m/s) | |||
| 9 | align=left | align=left | | 12.28 (w: -1.0 m/s) | 12.54 (w: +0.2 m/s) | 12.52 (w: -0.1 m/s) | 12.54 (w: +0.2 m/s) | |||
| 10 | align=left | align=left |  | 11.98 (w: -0.5 m/s) | 12.26 (w: +0.4 m/s) | 12.32 (w: -0.4 m/s) | 12.32 (w: -0.4 m/s) | |||
| 11 | align=left | align=left | 12.26 (w: +1.5 m/s) | x | x | 12.26 (w: +1.5 m/s) | ||||
According to an unofficial count, 21 athletes from 16 countries participated in the event.