# Swimming at the 2020 European Aquatics Championships – Mixed 4 × 100 metre medley relay

The Mixed 4 × 100 metre medley relay competition of the 2020 European Aquatics Championships was held on 20 May 2021.

## Records

Before the competition, the existing European and championship records were as follows.
| | Team | Time | Location | Date |
| World record | China | 3:38.41 | Qingdao | 1 October 2020 |
| European record | Great Britain | 3:40.18 | Glasgow | 6 August 2018 |
| Championship record | Great Britain | 3:40.18 | Glasgow | 6 August 2018 |
The following new records were set during this competition.
| Date | Event | Nation | Time | Record |
| 20 May | Final | Great Britain | 3:38.82 | ER, CR |

## Results
### Heats

The heats were started at 11:09.
| Rank | Heat | Lane | Nation | Swimmers | Time | Notes |
| 1 | 3 | 8 | Great Britain | Joe Litchfield (53.92) Adam Peaty (57.63) Harriet Jones (58.66) Anna Hopkin (53.09) | 3:43.30 | Q |
| 2 | 1 | 6 | Italy | Simone Sabbioni (54.25) Nicolò Martinenghi (58.11) Elena Di Liddo (57.89) Silvia Di Pietro (53.84) | 3:44.09 | Q |
| 3 | 3 | 7 | Russia | Grigoriy Tarasevich (53.43) Danil Semyaninov (59.66) Svetlana Chimrova (57.37) Arina Surkova (54.63) | 3:45.09 | Q |
| 4 | 2 | 6 | Netherlands | Ranomi Kromowidjojo (1:01.58) Arno Kamminga (58.31) Nyls Korstanje (52.52) Femke Heemskerk (52.85) | 3:45.26 | Q |
| 5 | 3 | 4 | France | Yohann Ndoye Brouard (53.64) Theo Bussiere (59.97) Marie Wattel (57.83) Assia Touati (54.95) | 3:46.39 | Q, WD, NR |
| 6 | 3 | 1 | Poland | Alicja Tchorz (1:01.02) Jan Kozakiewicz (59.67) Jakub Majerski (51.11) Kornelia Fiedkiewicz (54.63) | 3:46.43 | Q, NR |
| 7 | 2 | 7 | Spain | Hugo González (53.00) Jessica Vall (1:07.31) Alberto Lozano (52.24) Lidón Muñoz (54.05) | 3:46.60 | Q, NR |
| 8 | 1 | 7 | Switzerland | Thierry Bollin (55.34) Lisa Mamie (1:06.56) Noè Ponti (50.91) Maria Ugolkova (54.04) | 3:46.85 | Q |
| 9 | 1 | 5 | Belarus | Viktar Staselovich (54.50) Ilya Shymanovich (58.22) Anastasiya Kuliashova (59.05) Nastassia Karakouskaya (56.06) | 3:47.83 | Q |
| 10 | 2 | 0 | Sweden | Gustav Hökfelt (55.15) Johannes Skagius (1:00.13) Sara Junevik (58.96) Michelle Coleman (53.74) | 3:47.98 | NR |
| 11 | 3 | 2 | Denmark | Karoline Sørensen (1:02.40) Tobias Bjerg (58.98) Emilie Beckmann (58.04) Mathias Rysgaard (48.64) | 3:48.06 | NR |
| 12 | 2 | 5 | Czech Republic | Tomáš Franta (54.61) Matěj Zábojník (1:01.73) Barbora Janíčková (1:00.01) Barbora Seemanová (52.51) | 3:48.86 | NR |
| 13 | 2 | 3 | Ireland | Shane Ryan (54.50) Darragh Greene (59.09) Ellen Walshe (1:00.18) Danielle Hill (55.31) | 3:49.08 | NR |
| 14 | 2 | 8 | Greece | Evangelos Makrygiannis (54.88) Konstantinos Meretsolias (1:00.46) Anna Ntountounaki (57.58) Theodora Drakou (56.29) | 3:49.21 | |
| 15 | 1 | 1 | Germany | Nadine Lämmler (1:02.70) Melvin Imoudu (1:00.67) Ramon Klenz (52.25) Julia Mrozinski (55.17) | 3:50.79 | |
| 16 | 1 | 4 | Estonia | Armin Evert Lelle (55.88) Eneli Jefimova (1:07.44) Alex Ahtiainen (52.72) Aleksa Gold (54.90) | 3:50.94 | NR |
| 17 | 3 | 9 | Bulgaria | Gabriela Georgieva (1:04.33) Lyubomir Epitropov (1:01.53) Josif Miladinov (51.48) Diana Petkova (54.80) | 3:52.14 | NR |
| 18 | 3 | 5 | Hungary | Richárd Bohus (54.87) Anna Sztankovics (1:08.08) Dóra Hatházi (1:00.62) Péter Holoda (48.64) | 3:52.21 | |
| 19 | 1 | 2 | Austria | Bernhard Reitshammer (55.10) Christopher Rothbauer (1:01.08) Lena Kreundl (1:00.71) Cornelia Pammer (55.88) | 3:52.77 | NR |
| 20 | 1 | 3 | Turkey | Metin Aydın (56.42) Demirkan Demir (1:01.13) Nida Eliz Üstündağ (1:00.86) Selen Özbilen (55.98) | 3:54.39 | |
| 21 | 2 | 9 | Norway | Ingeborg Løyning (1:04.24) André Klippenberg Grindheim (1:00.18) Tomoe Zenimoto Hvas (52.75) Malene Rypestøl (57.29) | 3:54.46 | NR |
| 22 | 2 | 1 | Moldova | Tatiana Salcuțan (1:02.63) Anastasia Basisto (1:08.52) Alexei Sancov (52.69) Constantin Malachi (50.91) | 3:54.75 | NR |
| 23 | 3 | 3 | Israel | Michael Laitarovsky (55.46) Lea Polonsky (1:10.16) Tomer Frankel (53.44) Daria Golovaty (55.72) | 3:54.78 | |
| 24 | 3 | 0 | Lithuania | Ugnė Mažutaitytė (1:03.87) Kotryna Teterevkova (1:08.84) Deividas Margevičius (52.42) Simonas Bilis (49.73) | 3:54.86 | |
| 25 | 2 | 4 | Slovakia | Tamara Potocká (1:04.23) Tomáš Klobučník (1:01.59) Zora Ripková (1:00.82) Matej Duša (49.23) | 3:55.87 | |
| 26 | 3 | 6 | Latvia | Ģirts Feldbergs (56.46) Daniils Bobrovs (1:02.78) Arina Baikova (1:05.08) Gabriela Ņikitina (56.58) | 4:00.90 | |
| 27 | 2 | 2 | Andorra | Mónica Ramírez (1:06.01) Nàdia Tudó (1:14.91) Bernat Lomero (56.96) Tomàs Lomero (52.13) | 4:10.01 | NR |

### Final

The final was held at 19:22.
| Rank | Lane | Nation | Swimmers | Time | Notes |
| | 4 | Great Britain | Kathleen Dawson (58.43) Adam Peaty (57.13) James Guy (50.61) Anna Hopkin (52.65) | 3:38.82 | ER, CR |
| | 6 | Netherlands | Kira Toussaint (59.59) Arno Kamminga (58.37) Nyls Korstanje (51.45) Femke Heemskerk (51.87) | 3:41.28 | NR |
| | 5 | Italy | Margherita Panziera (59.55) Nicolò Martinenghi (58.05) Elena Di Liddo (57.54) Alessandro Miressi (47.16) | 3:42.30 | NR |
| 4 | 3 | Russia | Kliment Kolesnikov (52.09) Yuliya Yefimova (1:06.01) Andrey Minakov (51.64) Maria Kameneva (53.86) | 3:43.60 | |
| 5 | 1 | Switzerland | Roman Mityukov (53.92) Lisa Mamie (1:07.21) Noè Ponti (50.98) Maria Ugolkova (54.05) | 3:46.16 | |
| 6 | 8 | Belarus | Viktar Staselovich (54.93) Ilya Shymanovich (58.00) Anastasiya Kuliashova (58.91) Anastasiya Shkurdai (54.98) | 3:46.82 | |
| 7 | 2 | Poland | Kacper Stokowski (54.38) Jan Kalusowski (1:00.90) Paulina Peda (58.94) Katarzyna Wasick (54.80) | 3:49.02 | |
| 8 | 7 | Spain | Nicolás García (54.90) Jessica Vall (1:08.18) Alberto Lozano (52.39) Lidón Muñoz (54.43) | 3:49.90 | |