The women's heptathlon event at the 1986 World Junior Championships in Athletics was held in Athens, Greece, at Olympic Stadium on 18 and 19 July.
| Gold | Svetla Dimitrova | |
| Silver | Marina Shcherbina | |
| Bronze | Anke Schmidt |
18/19 July
| Rank | Name | Nationality | 100m H | HJ | SP | 200m | LJ | JT | 800m | Points | Notes | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| align=left | align=left | 13.85 (w: -0.1 m/s) | 1.88 | 12.24 | 24.32 (w: 1.1 m/s) | 6.26 | 37.16 | 2:12.29 | 6041 | |||||
| align=left | align=left | 14.46 (w: 0.9 m/s) | 1.79 | 13.01 | 25.70 (w: 0.8 m/s) | 5.97 | 47.32 | 2:16.40 | 5953 | |||||
| align=left | align=left | 13.81 (w: -0.1 m/s) | 1.73 | 11.86 | 23.93 (w: 1.1 m/s) | 6.30 | 30.70 | 2:12.23 | 5900 | |||||
| 4 | align=left | align=left | 14.22 | 1.73 | 11.15 | 25.02 | 5.76 | 38.18 | 2:17.80 | 5591 | ||||
| 5 | align=left | align=left |  | 14.39 (w: -0.2 m/s) | 1.79 | 12.46 | 25.62 (w: 0.7 m/s) | 5.72 | 34.14 | 2:23.59 | 5508 | |||
| 6 | align=left | align=left | 14.20 | 1.64 | 12.10 | 26.03 | 5.86 | 41.38 | 2:24.79 | 5457 | ||||
| 7 | align=left | align=left | 15.00 | 1.70 | 11.92 | 26.58 | 5.87 | 42.28 | 2:20.04 | 5433 | ||||
| 8 | align=left | align=left | 14.03 | 1.64 | 13.34 | 25.12 | 5.40 | 38.18 | 2:27.73 | 5408 | ||||
| 9 | align=left | align=left | 14.55 (w: -0.1 m/s) | 1.79 | 9.93 | 25.73 | 5.72 | 26.80 | 2:11.94 | 5331 | ||||
| 10 | align=left | align=left |  | 14.30 | 1.70 | 9.27 | 25.40 | 5.80 | 32.98 | 2:24.98 | 5195 | |||
| 11 | align=left | align=left |  | 15.32 | 1.61 | 10.54 | 26.24 | 5.14 | 38.68 | 2:13.34 | 5044 | |||
| 12 | align=left | align=left |  | 14.97 | 1.82 | 8.81 | 26.70 | 5.47 | 30.74 | 2:20.74 | 5033 | |||
| 13 | align=left | align=left |  | 15.76 | 1.73 | 10.75 | 26.87 | 5.00 | 47.18 | 2:28.54 | 5013 | |||
| 14 | align=left | align=left | | 15.23 | 1.70 | 9.02 | 26.36 | 5.65 | 29.26 | 2:17.93 | 4956 | |||
| 15 | align=left | align=left |  | 14.94 | 1.61 | 9.94 | 25.03 | 5.67 | 29.90 | 2:31.65 | 4904 | |||
| 16 | align=left | align=left |  | 15.62 | 1.55 | 11.42 | 27.27 | 5.22 | 40.94 | 2:27.28 | 4785 | |||
| 17 | align=left | align=left | | 15.37 | 1.61 | 10.10 | 25.39 | 4.72 | 35.34 | 2:26.44 | 4728 | |||
| align=left | align=left | | 14.86 | 1.67 | DNS | DNS | DNS | DNS | DNS | DNF |
According to an unofficial count, 18 athletes from 12 countries participated in the event.