The women's hammer throw event at the 2008 World Junior Championships in Athletics was held in Bydgoszcz, Poland, at Zawisza Stadium on 8 and 9 July.
| Gold | Bianca Perie | |
| Silver | Kateřina Šafránková | |
| Bronze | Jenny Ozorai |
9 July
| Rank | Name | Nationality | Attempts | Result | Notes | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | ||||||||
| align=left | align=left | | 64.66 | 67.95 | 63.53 | 65.51 | x | 66.65 | 67.95 | ||||
| align=left | align=left | | x | 62.78 | x | 59.86 | 63.13 | 60.01 | 63.13 | ||||
| align=left | align=left | | x | 58.82 | 54.07 | 59.54 | 60.80 | x | 60.80 | ||||
| 4 | align=left | align=left | 51.03 | 55.70 | 58.03 | 60.18 | x | 59.77 | 60.18 | ||||
| 5 | align=left | align=left |  | 58.78 | x | 57.17 | x | 57.34 | 54.87 | 58.78 | |||
| 6 | align=left | align=left | 54.11 | 58.69 | 53.02 | 55.90 | x | 57.74 | 58.69 | ||||
| 7 | align=left | align=left | 56.01 | 58.45 | 56.88 | x | 56.42 | x | 58.45 | ||||
| 8 | align=left | align=left |  | 58.03 | 57.41 | 56.71 | 57.27 | x | x | 58.03 | |||
| 9 | align=left | align=left | | 57.50 | 58.00 | 57.16 | 58.00 | ||||||
| 10 | align=left | align=left | 57.98 | 57.37 | 56.25 | 57.98 | |||||||
| 11 | align=left | align=left | x | 52.88 | 57.29 | 57.29 | |||||||
| 12 | align=left | align=left | | 55.90 | 53.42 | x | 55.90 | ||||||
8 July
| Rank | Name | Nationality | Attempts | Result | Notes | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||||||
| 1 | align=left | align=left | | 59.70 | 62.23 | - | 62.23 | Q | ||
| 2 | align=left | align=left | 59.57 | 59.07 | 55.24 | 59.57 | q | |||
| 3 | align=left | align=left | 56.47 | x | 59.48 | 59.48 | q | |||
| 4 | align=left | align=left | 59.42 | x | 56.32 | 59.42 | q | |||
| 5 | align=left | align=left | 57.44 | x | 58.46 | 58.46 | q | |||
| 6 | align=left | align=left | | x | 58.32 | x | 58.32 | q | ||
| 7 | align=left | align=left | | 58.07 | x | 57.57 | 58.07 | q | ||
| 8 | align=left | align=left | | 55.69 | 57.21 | 57.79 | 57.79 | |||
| 9 | align=left | align=left |  | 57.67 | 56.24 | 57.41 | 57.67 | |||
| 10 | align=left | align=left |  | 53.49 | 53.91 | 56.80 | 56.80 | |||
| 11 | align=left | align=left |  | 51.16 | 53.58 | 54.45 | 54.45 | |||
| 12 | align=left | align=left |  | 51.47 | 53.97 | 51.98 | 53.97 | |||
| 13 | align=left | align=left |  | x | 52.76 | x | 52.76 | |||
| 14 | align=left | align=left |  | x | 52.06 | 50.86 | 52.06 | |||
| Rank | Name | Nationality | Attempts | Result | Notes | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||||||
| 1 | align=left | align=left | | 61.10 | - | - | 61.10 | Q | ||
| 2 | align=left | align=left | | 56.32 | 58.64 | x | 58.64 | q | ||
| 3 | align=left | align=left | 55.19 | 58.50 | 57.03 | 58.50 | q | |||
| 4 | align=left | align=left | | x | 57.95 | 53.10 | 57.95 | q | ||
| 5 | align=left | align=left | | 54.96 | x | 57.82 | 57.82 | q | ||
| 6 | align=left | align=left | | 56.07 | 57.53 | x | 57.53 | |||
| 7 | align=left | align=left | | 54.23 | 53.22 | 54.68 | 54.68 | |||
| 8 | align=left | align=left | | 48.52 | 54.36 | x | 54.36 | |||
| 9 | align=left | align=left |  | 52.79 | x | 54.29 | 54.29 | |||
| 10 | align=left | align=left |  | 53.26 | x | 52.14 | 53.26 | |||
| 11 | align=left | align=left |  | 51.26 | 53.02 | 52.59 | 53.02 | |||
| 12 | align=left | align=left |  | x | 49.47 | 52.57 | 52.57 | |||
| 13 | align=left | align=left |  | x | 52.22 | x | 52.22 | |||
| align=left | align=left | | x | x | x | NM | ||||
According to an unofficial count, 28 athletes from 20 countries participated in the event.