The women's long jump event at the 2004 World Junior Championships in Athletics was held in Grosseto, Italy, at Stadio Olimpico Carlo Zecchini on 16 and 17 July.
| Gold | Denisa Ščerbová | |
| Silver | Sophie Krauel | |
| Bronze | Veronika Shutkova |
17 July
| Rank | Name | Nationality | Attempts | Result | Notes | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | ||||||||
| align=left | align=left | | 6.61 (w: -0.3 m/s) | x | 6.21 (w: -0.4 m/s) | x | x | 6.34 (w: -0.2 m/s) | 6.61 (w: -0.3 m/s) | ||||
| align=left | align=left | x | 6.47 (w: +0.2 m/s) | 6.44 (w: -0.1 m/s) | 6.45 (w: +0.4 m/s) | x | x | 6.47 (w: +0.2 m/s) | |||||
| align=left | align=left | | 6.08 (w: +0.2 m/s) | x | x | 6.04 (w: -0.2 m/s) | x | 6.22 (w: 0.0 m/s) | 6.22 (w: 0.0 m/s) | ||||
| 4 | align=left | align=left |  | 6.02 (w: +0.1 m/s) | x | 5.95 (w: -0.1 m/s) | 5.91 (w: +0.3 m/s) | 6.20 (w: +0.4 m/s) | x | 6.20 (w: +0.4 m/s) | |||
| 5 | align=left | align=left |  | 5.48 (w: -0.2 m/s) | 5.81 (w: 0.0 m/s) | 6.16 (w: +0.1 m/s) | 5.67 (w: -0.1 m/s) | 5.73 (w: 0.0 m/s) | 6.18 (w: -0.4 m/s) | 6.18 (w: -0.4 m/s) | |||
| 6 | align=left | align=left |  | 6.08 (w: +0.2 m/s) | x | 4.49 (w: -0.4 m/s) | 5.83 (w: +0.2 m/s) | 6.11 (w: 0.0 m/s) | 6.16 (w: +0.8 m/s) | 6.16 (w: +0.8 m/s) | |||
| 7 | align=left | align=left | | 6.03 (w: -0.1 m/s) | 5.99 (w: -0.1 m/s) | 6.04 (w: -0.2 m/s) | x | 6.06 (w: +0.1 m/s) | 5.95 (w: +0.5 m/s) | 6.06 (w: +0.1 m/s) | |||
| 8 | align=left | align=left |  | 6.05 (w: +0.2 m/s) | 5.83 (w: -0.7 m/s) | 5.91 (w: -0.2 m/s) | 5.80 (w: +0.1 m/s) | 5.99 (w: +0.3 m/s) | 5.83 (w: +0.3 m/s) | 6.05 (w: +0.2 m/s) | |||
| 9 | align=left | align=left |  | 5.90 (w: 0.0 m/s) | 5.99 (w: -0.4 m/s) | x | 5.99 (w: -0.4 m/s) | ||||||
| 10 | align=left | align=left | 5.88 (w: +0.5 m/s) | 5.98 (w: +0.7 m/s) | 5.93 (w: +0.2 m/s) | 5.98 (w: +0.7 m/s) | |||||||
| 11 | align=left | align=left | | 5.66 (w: -0.1 m/s) | 5.71 (w: +0.1 m/s) | 5.90 (w: -0.3 m/s) | 5.90 (w: -0.3 m/s) | ||||||
| 12 | align=left | align=left |  | 4.83 (w: +0.4 m/s) | 5.86 (w: +0.2 m/s) | 5.87 (w: +0.3 m/s) | 5.87 (w: +0.3 m/s) | ||||||
16 July
| Rank | Name | Nationality | Attempts | Result | Notes | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||||||
| 1 | align=left | align=left | x | 6.59 (w: +0.8 m/s) | - | 6.59 (w: +0.8 m/s) | Q | |||
| 2 | align=left | align=left | | 5.97 (w: -0.1 m/s) | 6.12 (w: -1.5 m/s) | 6.09 (w: -0.9 m/s) | 6.12 (w: -1.5 m/s) | q | ||
| 3 | align=left | align=left | | 5.80 (w: 0.0 m/s) | 6.07 (w: -0.3 m/s) | 6.01 (w: -0.7 m/s) | 6.07 (w: -0.3 m/s) | q | ||
| 4 | align=left | align=left | | 5.63 (w: -0.8 m/s) | 5.95 (w: -0.8 m/s) | 6.04 (w: -0.9 m/s) | 6.04 (w: -0.9 m/s) | q | ||
| 5 | align=left | align=left | | 5.98 (w: -0.6 m/s) | x | 5.87 (w: 0.0 m/s) | 5.98 (w: -0.6 m/s) | q | ||
| 6 | align=left | align=left |  | 3.10 (w: -0.8 m/s) | 5.81 (w: -0.4 m/s) | 5.91 (w: -0.8 m/s) | 5.91 (w: -0.8 m/s) | |||
| 7 | align=left | align=left | 5.89 (w: -0.8 m/s) | 5.64 (w: 0.0 m/s) | 5.85 (w: -0.5 m/s) | 5.89 (w: -0.8 m/s) | ||||
| 8 | align=left | align=left |  | 5.64 (w: -0.6 m/s) | 5.64 (w: -1.6 m/s) | x | 5.64 (w: -0.6 m/s) | |||
| 9 | align=left | align=left |  | x | x | 5.47 (w: -1.8 m/s) | 5.47 (w: -1.8 m/s) | |||
| 10 | align=left | align=left | | x | x | 5.45 (w: -0.4 m/s) | 5.45 (w: -0.4 m/s) | |||
| 11 | align=left | align=left | 5.23 (w: +0.8 m/s) | 5.20 (w: +0.6 m/s) | 5.36 (w: +0.1 m/s) | 5.36 (w: +0.1 m/s) | ||||
| Rank | Name | Nationality | Attempts | Result | Notes | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||||||
| 1 | align=left | align=left | | 6.16 (w: -1.2 m/s) | 6.34 (w: -0.6 m/s) | - | 6.34 (w: -0.6 m/s) | q | ||
| 2 | align=left | align=left | | 5.92 (w: -0.7 m/s) | 6.21 (w: -0.8 m/s) | 5.81 (w: -0.7 m/s) | 6.21 (w: -0.8 m/s) | q | ||
| 3 | align=left | align=left | | 6.18 (w: -0.4 m/s) | 6.00 (w: -0.6 m/s) | 6.05 (w: -1.2 m/s) | 6.18 (w: -0.4 m/s) | q | ||
| 4 | align=left | align=left | x | 6.09 (w: +0.3 m/s) | x | 6.09 (w: +0.3 m/s) | q | |||
| 5 | align=left | align=left | | 6.06 (w: -1.0 m/s) | 5.81 (w: -1.0 m/s) | 5.83 (w: -1.3 m/s) | 6.06 (w: -1.0 m/s) | q | ||
| 6 | align=left | align=left | | 6.01 (w: +0.8 m/s) | x | 6.03 (w: -1.2 m/s) | 6.03 (w: -1.2 m/s) | q | ||
| 7 | align=left | align=left | | x | 6.03 (w: -0.8 m/s) | 3.94 (w: -0.5 m/s) | 6.03 (w: -0.8 m/s) | q | ||
| 8 | align=left | align=left |  | 5.94 (w: 0.0 m/s) | x | 5.88 (w: -1.7 m/s) | 5.94 (w: 0.0 m/s) | |||
| 9 | align=left | align=left | 5.54 (w: -1.2 m/s) | 5.93 (w: -0.3 m/s) | 5.87 (w: -0.5 m/s) | 5.93 (w: -0.3 m/s) | ||||
| 10 | align=left | align=left | 5.82 (w: -0.2 m/s) | 5.62 (w: -1.0 m/s) | 5.92 (w: -0.2 m/s) | 5.92 (w: -0.2 m/s) | ||||
| 11 | align=left | align=left | | 4.85 (w: -0.7 m/s) | 5.37 (w: -1.1 m/s) | x | 5.37 (w: -1.1 m/s) | |||
According to an unofficial count, 22 athletes from 17 countries participated in the event.