The women's triple jump event at the 2010 World Junior Championships in Athletics was held in Moncton, New Brunswick, Canada, at Moncton Stadium on 21 and 22 July.
| Gold | Dailenis Alcántara | |
| Silver | Laura Samuel | |
| Bronze | Deng Linuo |
22 July
| Rank | Name | Nationality | Attempts | Result | Notes | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | ||||||||
| align=left | align=left | | 13.76 w (w: +2.7 m/s) | 13.81 (w: +0.8 m/s) | 14.09 (w: +2.0 m/s) | 13.73 (w: +1.1 m/s) | 13.82 (w: +0.7 m/s) | 13.77 (w: +1.2 m/s) | 14.09 (w: +2.0 m/s) | ||||
| align=left | align=left | x | 13.49 (w: +1.7 m/s) | 13.57 (w: +1.4 m/s) | 13.75 (w: +0.9 m/s) | 13.66 (w: +0.8 m/s) | x | 13.75 (w: +0.9 m/s) | |||||
| align=left | align=left | | 13.31 (w: +1.5 m/s) | 13.72 (w: +1.8 m/s) | 13.51 (w: +1.7 m/s) | 13.20 (w: +0.9 m/s) | 13.58 (w: +1.1 m/s) | 13.16 (w: +1.3 m/s) | 13.72 (w: +1.8 m/s) | ||||
| 4 | align=left | align=left |  | 13.44 (w: +1.7 m/s) | 13.43 (w: +1.7 m/s) | 13.24 (w: +0.8 m/s) | 13.22 (w: +1.2 m/s) | 13.33 (w: +0.7 m/s) | 13.68 (w: +1.2 m/s) | 13.68 (w: +1.2 m/s) | |||
| 5 | align=left | align=left | 13.32 w (w: +2.4 m/s) | 13.54 (w: +1.3 m/s) | 13.42 w (w: +2.1 m/s) | 13.65 (w: +1.3 m/s) | 13.35 (w: +1.3 m/s) | 13.38 (w: +0.5 m/s) | 13.65 (w: +1.3 m/s) | ||||
| 6 | align=left | align=left |  | 12.56 w (w: +2.4 m/s) | 13.29 w (w: +3.6 m/s) | 13.02 (w: +1.8 m/s) | 13.07 (w: +0.9 m/s) | x | - | 13.29 w (w: +3.6 m/s) | |||
| 7 | align=left | align=left |  | 13.13 w (w: +3.4 m/s) | 13.01 w (w: +2.5 m/s) | 13.26 (w: +1.4 m/s) | x | x | 12.84 (w: +1.3 m/s) | 13.26 (w: +1.4 m/s) | |||
| 8 | align=left | align=left | x | 12.91 w (w: +2.1 m/s) | x | 12.22 (w: +1.6 m/s) | 12.56 (w: +0.9 m/s) | 12.50 (w: +1.5 m/s) | 12.91 w (w: +2.1 m/s) | ||||
| 9 | align=left | align=left |  | 12.71 (w: +2.0 m/s) | 12.87 (w: +1.3 m/s) | 11.33 (w: +1.7 m/s) | 12.87 (w: +1.3 m/s) | ||||||
| 10 | align=left | align=left |  | x | 12.66 (w: +2.0 m/s) | 12.58 (w: +0.9 m/s) | 12.66 (w: +2.0 m/s) | ||||||
| 11 | align=left | align=left |  | 12.31 (w: +1.4 m/s) | 12.65 (w: +1.2 m/s) | 12.40 w (w: +2.4 m/s) | 12.65 (w: +1.2 m/s) | ||||||
| align=left | align=left |  | x | - | - | NM | |||||||
21 July
| Rank | Name | Nationality | Attempts | Result | Notes | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||||||
| 1 | align=left | align=left | 13.45 (w: +1.3 m/s) | - | - | 13.45 (w: +1.3 m/s) | Q | |||
| 2 | align=left | align=left | | 13.36 (w: +1.3 m/s) | - | - | 13.36 (w: +1.3 m/s) | Q | ||
| 3 | align=left | align=left | 12.92 (w: +0.3 m/s) | 13.13 (w: +0.4 m/s) | x | 13.13 (w: +0.4 m/s) | q | |||
| 4 | align=left | align=left | | x | 13.02 (w: +1.2 m/s) | 13.07 (w: +1.1 m/s) | 13.07 (w: +1.1 m/s) | q | ||
| 5 | align=left | align=left | x | 12.98 (w: +0.1 m/s) | x | 12.98 (w: +0.1 m/s) | q | |||
| 5 | align=left | align=left | | x | x | 12.98 (w: +1.3 m/s) | 12.98 (w: +1.3 m/s) | q | ||
| 7 | align=left | align=left |  | 12.69 (w: +0.6 m/s) | 12.75 (w: -1.1 m/s) | 12.78 (w: +0.3 m/s) | 12.78 (w: +0.3 m/s) | |||
| 8 | align=left | align=left |  | 12.65 (w: +0.2 m/s) | 11.13 (w: +0.4 m/s) | x | 12.65 (w: +0.2 m/s) | |||
| 9 | align=left | align=left | | 12.57 (w: NWI) | 12.07 (w: -0.7 m/s) | x | 12.57 (w: NWI) | |||
| 10 | align=left | align=left |  | 12.52 (w: +0.1 m/s) | x | 12.30 (w: -0.8 m/s) | 12.52 (w: +0.1 m/s) | |||
| 11 | align=left | align=left | 11.62 (w: -1.2 m/s) | 11.89 (w: +0.2 m/s) | 12.47 (w: +1.5 m/s) | 12.47 (w: +1.5 m/s) | ||||
| 12 | align=left | align=left |  | 12.45 (w: +1.3 m/s) | x | x | 12.45 (w: +1.3 m/s) | |||
| 13 | align=left | align=left |  | 11.48 (w: 0.0 m/s) | 12.07 (w: -1.8 m/s) | 12.05 (w: -0.6 m/s) | 12.07 (w: -1.8 m/s) | |||
| 14 | align=left | align=left |  | 12.05 (w: +0.2 m/s) | 12.04 (w: -0.7 m/s) | 11.95 (w: +0.2 m/s) | 12.05 (w: +0.2 m/s) | |||
| Rank | Name | Nationality | Attempts | Result | Notes | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||||||
| 1 | align=left | align=left | | 13.58 (w: +1.6 m/s) | - | - | 13.58 (w: +1.6 m/s) | Q | ||
| 2 | align=left | align=left | | 13.35 (w: NWI) | - | - | 13.35 (w: NWI) | Q | ||
| 3 | align=left | align=left | | 13.02 (w: +0.9 m/s) | 12.58 (w: -0.2 m/s) | 12.46 (w: 0.0 m/s) | 13.02 (w: +0.9 m/s) | q | ||
| 4 | align=left | align=left | | 12.48 (w: NWI) | 13.00 (w: +0.2 m/s) | 12.81 (w: 0.0 m/s) | 13.00 (w: +0.2 m/s) | q | ||
| 5 | align=left | align=left | | 12.86 (w: +0.7 m/s) | 12.72 (w: -0.5 m/s) | 12.97 (w: -0.5 m/s) | 12.97 (w: -0.5 m/s) | q | ||
| 6 | align=left | align=left | | 12.85 (w: +0.7 m/s) | 12.77 (w: +0.3 m/s) | 12.48 (w: +0.4 m/s) | 12.85 (w: +0.7 m/s) | q | ||
| 7 | align=left | align=left | | 12.74 (w: +0.1 m/s) | 12.85 (w: -0.7 m/s) | 12.75 (w: +0.1 m/s) | 12.85 (w: -0.7 m/s) | |||
| 8 | align=left | align=left |  | x | 12.76 (w: -1.5 m/s) | 12.64 (w: -0.4 m/s) | 12.76 (w: -1.5 m/s) | |||
| 9 | align=left | align=left | 12.45 (w: +0.1 m/s) | 12.71 (w: +0.4 m/s) | 12.74 (w: +0.4 m/s) | 12.74 (w: +0.4 m/s) | ||||
| 10 | align=left | align=left |  | 12.74 (w: -0.1 m/s) | 12.42 (w: +1.1 m/s) | 12.62 (w: +0.8 m/s) | 12.74 (w: -0.1 m/s) | |||
| 11 | align=left | align=left | 12.57 (w: -0.3 m/s) | x | 12.65 (w: +0.2 m/s) | 12.65 (w: +0.2 m/s) | ||||
| 12 | align=left | align=left |  | x | 12.47 (w: +0.4 m/s) | 12.50 (w: -0.2 m/s) | 12.50 (w: -0.2 m/s) | |||
| 13 | align=left | align=left | x | 12.11 (w: -0.8 m/s) | 12.35 (w: -1.0 m/s) | 12.35 (w: -1.0 m/s) | ||||
| 14 | align=left | align=left |  | x | 12.27 (w: -0.4 m/s) | 12.07 (w: -0.2 m/s) | 12.27 (w: -0.4 m/s) | |||
According to an unofficial count, 28 athletes from 25 countries participated in the event.