The women's 4 × 100 metres relay event at the 2019 European Athletics U23 Championships was held in Gävle, Sweden, at Gavlehov Stadium Park on 14 July.[1]
| width=200 bgcolor=gold | Gold | width=200 bgcolor=silver | Silver | width=200 bgcolor=CC9966 | Bronze | |
| valign=top | Jennifer Montag Keshia Kwadwo Sophia Junk Lisa Nippgen | valign=top | Leisly Regulier Eloise de la Taille Estelle Raffai Sarah Richard | valign=top | Klaudia Siciarz Marlena Gola Martyna Kotwiła Ewa Swoboda Jagoda Mierzyńska |
Qualification rule: First 3 in each heat (Q) and the next 2 fastest (q) qualified for the final.
| Rank | Heat | Nation | Athletes | Time | Notes | |
|---|---|---|---|---|---|---|
| 1 | 1 | 43.45 | Q, WU23R | |||
| 2 | 2 | 43.99 | Q, SB | |||
| 3 | 2 | 44.18 | Q | |||
| 4 | 2 | 44.27 | Q, SB | |||
| 5 | 1 | 44.43 | Q, SB | |||
| 6 | 1 | 44.71 | Q | |||
| 7 | 2 | 44.79 | q | |||
| 8 | 1 | 44.80 | q | |||
| 9 | 2 | 44.93 | NU23R | |||
| 10 | 1 | 45.04 | NU23R | |||
| 11 | 1 | 45.17 | SB | |||
| 12 | 1 | 45.84 | SB | |||
| 13 | 2 | 45.96 | SB |
| Rank | Lane | Nation | Athletes | Time | Notes | ||
|---|---|---|---|---|---|---|---|
| 5 | align=left | 43.45 | =WU23R | ||||
| 6 | align=left | 43.82 | |||||
| 3 | align=left | 44.08 | SB | ||||
| 4 | 1 | align=left | 44.32 | ||||
| 5 | 7 | align=left | 44.54 | ||||
| 6 | 4 | align=left | 44.56 | ||||
| 7 | 8 | align=left | 45.29 | ||||
| 8 | 2 | align=left | 45.64 |