The women's javelin throw event at the 2015 European Athletics U23 Championships was held in Tallinn, Estonia, at Kadriorg Stadium on 9 and 11 July.
| Gold | Christin Hussong | |
| Silver | Kateryna Derun | |
| Bronze | Liveta Jasiūnaitė |
11 July
| Rank | Name | Nationality | Attempts | Result | Notes | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | ||||||||
| align=left | align=left | 62.07 | x | 59.40 | 65.60 | x | x | 65.60 | NUR PB | ||||
| align=left | align=left | | 48.55 | 52.51 | x | 55.23 | 55.27 | 58.60 | 58.60 | SB | |||
| align=left | align=left | | 51.35 | 50.30 | 52.72 | 52.08 | 55.77 | 54.70 | 55.77 | SB | |||
| 4 | align=left | align=left |  | 47.75 | 49.45 | 51.71 | 48.42 | 55.72 | x | 55.72 | PB | ||
| 5 | align=left | align=left |  | 50.69 | 54.82 | 51.24 | 55.11 | 55.32 | 53.69 | 55.32 | |||
| 6 | align=left | align=left | | 52.21 | 54.09 | x | 50.82 | x | 49.64 | 54.09 | |||
| 7 | align=left | align=left |  | 52.72 | x | 53.82 | 53.09 | 53.80 | 50.98 | 53.82 | SB | ||
| 8 | align=left | align=left |  | x | x | 52.54 | x | P | P | 52.54 | |||
| 9 | align=left | align=left | | 50.43 | x | x | 50.43 | ||||||
| 10 | align=left | align=left |  | 47.22 | 50.38 | 49.83 | 50.38 | ||||||
| 11 | align=left | align=left | x | 49.22 | 49.46 | 49.46 | |||||||
| 12 | align=left | align=left |  | 48.52 | 48.45 | 49.19 | 49.19 | ||||||
9 July
| Rank | Name | Nationality | Attempts | Result | Notes | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||||||
| 1 | align=left | align=left | 52.71 | 62.59 | 62.59 | SB Q | ||||
| 2 | align=left | align=left | | 53.52 | 54.92 | 51.54 | 54.92 | q | ||
| 3 | align=left | align=left | | 54.87 | 54.17 | 51.03 | 54.87 | q | ||
| 4 | align=left | align=left | | 54.18 | 54.77 | – | 54.77 | q | ||
| 5 | align=left | align=left | | 52.31 | x | – | 52.31 | q | ||
| 6 | align=left | align=left | | 51.92 | x | 49.06 | 51.92 | q | ||
| 7 | align=left | align=left | | 51.20 | x | 49.03 | 51.20 | q | ||
| 8 | align=left | align=left | | 50.61 | 50.63 | 50.99 | 50.99 | q | ||
| 9 | align=left | align=left | | 48.91 | 49.94 | x | 49.94 | q | ||
| 10 | align=left | align=left | | 49.80 | 48.31 | 48.78 | 49.80 | q | ||
| 11 | align=left | align=left | 43.76 | 48.08 | 49.70 | 49.70 | SB q | |||
| 12 | align=left | align=left | | 46.20 | 45.89 | 49.37 | 49.37 | q | ||
| 13 | align=left | align=left | | 45.98 | 47.57 | 48.92 | 48.92 | |||
| 14 | align=left | align=left | 48.10 | 46.22 | 48.71 | 48.71 | ||||
| 15 | align=left | align=left | | 48.25 | x | 44.96 | 48.25 | |||
| 16 | align=left | align=left |  | x | 46.34 | 47.15 | 47.15 | |||
| 17 | align=left | align=left | 46.06 | x | 42.82 | 46.06 | ||||
| 18 | align=left | align=left |  | 42.36 | 45.48 | x | 45.48 | |||
| 19 | align=left | align=left | | 42.86 | 41.98 | 44.44 | 44.44 | |||
| 20 | align=left | align=left | | 43.88 | 42.98 | x | 43.88 | |||
| 21 | align=left | align=left |  | x | 43.69 | 43.74 | 43.74 | |||
| 22 | align=left | align=left |  | 42.88 | x | 43.24 | 43.24 | |||
| 23 | align=left | align=left | | 40.99 | 40.97 | 42.54 | 42.54 | |||
| align=left | align=left |  | x | x | x | NM | ||||
According to an unofficial count, 24 athletes from 16 countries participated in the event.