The women's heptathlon 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 | Shen Shengfei | |
| Silver | Susanna Rajamäki | |
| Bronze | Viorica Țigău |
31 July/1 August
| Rank | Name | Nationality | 100m H | HJ | SP | 200m | LJ | JT | 800m | Points | Notes | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| align=left | align=left | | 14.19 (w: -0.6 m/s) | 1.80 | 14.35 | 25.33 (w: -0.4 m/s) | 5.87 | 45.33 | 2:35.08 | 5815 | ||||
| align=left | align=left | | 14.67 (w: -0.3 m/s) | 1.68 | 13.78 | 24.64 (w: -0.4 m/s) | 6.15 | 38.59 | 2:23.99 | 5721 | ||||
| align=left | align=left | | 13.86 (w: -0.6 m/s) | 1.71 | 11.80 | 24.80 (w: -0.3 m/s) | 6.30 | 33.51 | 2:20.54 | 5720 | ||||
| 4 | align=left | align=left |  | 13.89 (w: -0.3 m/s) | 1.71 | 12.85 | 24.68 (w: -0.3 m/s) | 5.68 | 40.70 | 2:23.05 | 5711 | |||
| 5 | align=left | align=left |  | 13.80 (w: -0.3 m/s) | 1.68 | 11.37 | 25.08 (w: -0.3 m/s) | 5.47 | 46.64 | 2:18.50 | 5665 | |||
| 6 | align=left | align=left |  | 14.95 (w: -0.6 m/s) | 1.71 | 13.23 | 25.90 (w: -0.3 m/s) | 5.97 | 45.15 | 2:26.64 | 5606 | |||
| 7 | align=left | align=left |  | 14.29 (w: 0.4 m/s) | 1.56 | 11.53 | 25.65 (w: -0.3 m/s) | 5.76 | 46.83 | 2:19.35 | 5493 | |||
| 8 | align=left | align=left | 14.21 (w: -0.3 m/s) | 1.74 | 11.54 | 25.58 (w: -0.4 m/s) | 5.81 | 34.18 | 2:20.78 | 5478 | ||||
| 9 | align=left | align=left |  | 14.60 (w: -0.6 m/s) | 1.68 | 11.33 | 25.51 (w: -0.3 m/s) | 5.82 | 40.17 | 2:19.89 | 5474 | |||
| 10 | align=left | align=left |  | 14.58 (w: -0.3 m/s) | 1.74 | 11.86 | 25.44 (w: -0.4 m/s) | 5.69 | 34.61 | 2:18.06 | 5470 | |||
| 11 | align=left | align=left | | 14.47 (w: -0.6 m/s) | 1.74 | 12.49 | 25.92 (w: -0.3 m/s) | 5.82 | 36.89 | 2:25.57 | 5466 | |||
| 12 | align=left | align=left | 14.73 (w: 0.4 m/s) | 1.53 | 10.99 | 25.35 (w: -0.3 m/s) | 5.59 | 48.77 | 2:16.82 | 5411 | ||||
| 13 | align=left | align=left |  | 14.83 (w: -0.3 m/s) | 1.74 | 10.66 | 25.53 (w: -0.3 m/s) | 5.38 | 40.77 | 2:19.59 | 5355 | |||
| 14 | align=left | align=left |  | 14.55 (w: -0.6 m/s) | 1.62 | 10.28 | 25.91 (w: -0.3 m/s) | 5.58 | 43.64 | 2:24.47 | 5238 | |||
| 15 | align=left | align=left | 14.16 (w: -0.3 m/s) | 1.65 | 10.79 | 25.84 (w: -0.3 m/s) | 5.80 | 33.45 | 2:25.80 | 5220 | ||||
| 16 | align=left | align=left | 15.47 (w: -0.3 m/s) | 1.74 | 10.13 | 26.82 (w: -0.4 m/s) | 5.54 | 48.00 | 2:26.46 | 5220 | ||||
| 17 | align=left | align=left |  | 14.14 (w: 0.4 m/s) | 1.65 | 11.61 | 26.11 (w: -0.3 m/s) | 5.60 | 36.98 | 2:29.91 | 5209 | |||
| 18 | align=left | align=left | | 14.24 (w: 0.4 m/s) | 1.71 | 11.68 | 25.95 (w: -0.4 m/s) | 4.93 | 36.73 | 2:24.38 | 5164 | |||
| 19 | align=left | align=left | 14.21 (w: -0.6 m/s) | 1.62 | 12.24 | 24.38 (w: -0.3 m/s) | 5.55 | 29.78 | 2:36.68 | 5129 | ||||
| 20 | align=left | align=left | | 15.10 (w: 0.4 m/s) | 1.62 | 11.59 | 25.60 (w: -0.4 m/s) | 5.78 | 36.43 | 2:33.69 | 5083 | |||
| 21 | align=left | align=left |  | 14.76 (w: 0.4 m/s) | 1.65 | 9.45 | 24.55 (w: -0.3 m/s) | 5.28 | 33.09 | 2:22.30 | 5057 | |||
| 22 | align=left | align=left |  | 15.84 (w: -0.6 m/s) | 1.62 | 10.85 | 26.66 (w: -0.4 m/s) | 5.62 | 38.99 | 2:25.39 | 4953 | |||
| 23 | align=left | align=left | 14.75 (w: 0.4 m/s) | 1.56 | 11.66 | 26.58 (w: -0.3 m/s) | 5.36 | 39.77 | 2:36.08 | 4892 | ||||
| align=left | align=left | 14.66 (w: 0.4 m/s) | 1.77 | 11.16 | 25.30 (w: -0.3 m/s) | 5.47 | DNS | DNS | DNF |
According to an unofficial count, 24 athletes from 19 countries participated in the event.