The women's 4 x 100 metres relay event at the 2007 European Athletics U23 Championships was held in Debrecen, Hungary, at Gyulai István Atlétikai Stadion on 15 July.
| Gold | Yuna Mekhti-Zade Kseniya Vdovina Natalya Murinovich Yuliya Chermoshanskaya  | |
| Silver | Anne-Kathrin Elbe Verena Sailer Mareike Peters Anne Möllinger | |
| Bronze | Paulina Siemieniako Ewelina Klocek Marta Jeschke Iwona Brzezińska  |
15 July
| Rank | Nation | Competitors | Time | Notes | ||
|---|---|---|---|---|---|---|
| align=left | | 43.67 | ||||
| align=left | 43.75 | |||||
| align=left | | 43.78 | ||||
| 4 | align=left |  | 44.08 | |||
| 5 | align=left |  | 44.21 | |||
| 6 | align=left |  | 44.34 | |||
| 7 | align=left |  | 45.18 | |||
| 8 | align=left | 45.26 |
15 July
Qualified: first 2 in each heat and 4 best to the Final
| Rank | Nation | Competitors | Time | Notes | ||
|---|---|---|---|---|---|---|
| 1 | align=left | | 43.98 | Q | ||
| 2 | align=left | | 44.08 | Q | ||
| 3 | align=left | | 44.12 | q | ||
| 4 | align=left | | 44.20 | q | ||
| 5 | align=left | 44.91 | q | |||
| 6 | align=left |  | 45.58 | |||
| 7 | align=left |  | 46.44 |
| Rank | Nation | Competitors | Time | Notes | ||
|---|---|---|---|---|---|---|
| 1 | align=left | 43.73 | Q | |||
| 2 | align=left | | 44.07 | Q | ||
| 3 | align=left | | 44.98 | q | ||
| 4 | align=left |  | 44.99 | |||
| 5 | align=left |  | 45.37 | |||
| 6 | align=left |  | 46.92 | |||
| align=left | DNS |
According to an unofficial count, 52 athletes from 13 countries participated in the event.
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