Swimming at the 2018 European Aquatics Championships – Women's 4 × 100 metre medley relay
The Women's 4 × 100 metre medley relay competition of the 2018 European Aquatics Championships was held on 9 August 2018.
Records
Before the competition, the existing world and championship records were as follows.| Team | Time | Location | Date | |
| World record | 3:51.55 | Budapest | 30 July 2017 | |
| European record | 3:53.38 | Budapest | 30 July 2017 | |
| Championship record | 3:55.62 | Berlin | 24 August 2014 |
The following new records were set during this competition.
| Date | Event | Nation | Time | Record |
| 9 August | Final | 3:54.22 | CR |
Results
Heats
The heats were started at 10:05.Final
The final was held at 18:07.| Rank | Lane | Nation | Swimmers | Time | Notes |
| 7 | Anastasia Fesikova Yuliya Yefimova Svetlana Chimrova Maria Kameneva | 3:54.22 | CR | ||
| 4 | Mie Nielsen Rikke Møller Pedersen Emilie Beckmann Pernille Blume | 3:56.69 | |||
| 5 | Georgia Davies Siobhan-Marie O'Connor Alys Thomas Freya Anderson | 3:56.91 | |||
| 4 | 3 | Carlotta Zofkova Arianna Castiglioni Elena Di Liddo Federica Pellegrini | 3:57.00 | ||
| 5 | 6 | Kira Toussaint Tes Schouten Kinge Zandringa Femke Heemskerk | 3:58.94 | ||
| 6 | 2 | Mathilde Cini Fanny Deberghes Marie Wattel Charlotte Bonnet | 3:59.85 | ||
| 7 | 1 | Laura Riedemann Jessica Steiger Aliena Schmidtke Annika Bruhn | 4:01.10 | ||
| 8 | 8 | Katinka Hosszú Anna Sztankovics Liliána Szilágyi Evelyn Verrasztó | 4:04.58 |