| Event: | Mixed 4 × 100 metre medley relay |
| Competition: | 2015 European Games |
| Venue: | Aquatic Palace |
| Dates: | 26 June |
| Competitors: | 85 |
| Nations: | 17 |
| Win Value: | 3:49.53 |
| Gold: | Mariia Kameneva Anton Chupkov Daniil Pakhomov Arina Openysheva Filip Shopin Daria Chikunova Roman Shevliakov Vasilissa Buinaia |
| Goldnoc: | RUS |
| Silver: | Luke Greenbank Charlie Attwood Amelia Clynes Georgia Coates Joe Litchfield Luke Davies Abbie Wood Hannah Featherstone |
| Silvernoc: | GBR |
| Bronze: | Maxine Wolters Leo Schmidt Johannes Tesch Katrin Gottwald Marek Ulrich Laura Kelsch Hana van Loock |
| Bronzenoc: | GER |
The mixed 4 × 100 metre medley relay event at the 2015 European Games in Baku took place on 26 June at the Aquatic Palace.
The heats were started at 11:18.
| Rank | Heat | Lane | Nation | Swimmers | Time | Notes |
|---|---|---|---|---|---|---|
| 1 | 2 | 2 | Filipp Shopin (55.33) Daria Chikunova (1:09.88) Roman Shevliakov (53.30) Vasilissa Buinaia (57.63) | 3:56.14 | Q, GR | |
| 2 | 1 | 8 | Marek Ulrich (55.35) Laura Kelsch (1:11.31) Johannes Tesch (54.21) Hana van Loock (56.55) | 3:57.42 | Q | |
| 3 | 2 | 1 | Joe Litchfield (56.73) Luke Davies (1:03.00) Abbie Wood (1:01.55) Hannah Featherstone (56.97) | 3:58.25 | Q | |
| 4 | 2 | 5 | Pauline Mahieu (1:03.04) Nolwenn Hervé (1:11.36) Guillaume Garzotto (56.23) Maxime Cadiat (51.03) | 4:01.66 | Q | |
| 5 | 1 | 0 | Gabriela Bernat (1:05.93) Janusz Arentewicz (1:04.16) Michał Chudy (53.80) Magdalena Roman (58.66) | 4:02.55 | Q | |
| 6 | 1 | 7 | Berk Özkul (58.50) Beste Samancı (1:11.01) Yüksel Deniz Özkan (1:03.51) Emre Sakçı (50.63) | 4:03.65 | Q | |
| 7 | 1 | 2 | Dominik Varga (57.31) Zsófia Leitner (1:13.21) Boglárka Bonecz (1:03.42) Ármin Reményi (50.88) | 4:04.82 | Q | |
| 8 | 1 | 1 | Martina Rossi (1:03.55) Federico Poggio (1:07.63) Christian Ferraro (55.24) Camilla Tinelli (58.57) | 4:04.99 | Q | |
| 9 | 1 | 5 | Tomáš Franta (59.12) Jakub Březina (1:06.01) Edita Chrápavá (1:02.75) Barbora Seemanová (57.17) | 4:05.05 | ||
| 10 | 1 | 3 | Christoffer Fredrikson (57.80) Sini Koivu (1:12.15) Niko Makela (56.79) Aino Otava (59.16) | 4:05.90 | ||
| 11 | 2 | 4 | Vladyslava Maznytska (1:04.66) Yevgen Kurkin (1:04.04) Tetiana Kudako (1:06.59) Ivan Denysenko (50.96) | 4:06.25 | ||
| 12 | 1 | 4 | Timothy Schlatter (1:00.45) Jacques Läuffer (1:04.78) Olivia Sindico (1:04.04) Zoe Preisig (58.15) | 4:07.42 | ||
| 13 | 1 | 6 | Darya Douhal (1:06.74) Viktoryia Mikhalap (1:13.28) Pavel Bashura (57.32) Hryhory Pekarski (52.22) | 4:09.56 | ||
| 14 | 2 | 7 | Adrian Negru (1:01.15) Alexandra Vinicenco (1:13.03) Vlas Cononov (57.09) Ana Cosmina (1:00.96) | 4:12.23 | ||
| 2 | 0 | |||||
| 2 | 3 | Marius Solaat Rødland Ariel Braathen Sigurd Holten Bøen Marte Løvberg | ||||
| 2 | 6 | Caroline Pilhatsch (1:05.23) Christopher Rothbauer (1:03.22) Caroline Hechenbichler (1:03.64) Robin Grünberger | ||||
| 2 | 8 |
The final was held at 19:46.
| Rank | Lane | Nation | Swimmers | Time | Notes | |
|---|---|---|---|---|---|---|
| 4 | Mariia Kameneva (1:01.85) Anton Chupkov (1:00.42) Daniil Pakhomov (52.04) Arina Openysheva (55.22) | 3:49.53 | GR | |||
| 3 | Luke Greenbank (54.86) Charlie Attwood (1:00.78) Amelia Clynes (1:00.85) Georgia Coates (55.54) | 3:52.03 | ||||
| 5 | Maxine Wolters (1:01.48) Leo Schmidt (1:02.66) Johannes Tesch (53.81) Katrin Gottwald (56.32) | 3:54.27 | ||||
| 4 | 8 | Martina Rossi (1:03.50) Giulia Verona (1:10.62) Giacomo Carini (53.18) Alessandro Miressi (48.87) | 3:56.17 | |||
| 5 | 6 | Pauline Mahieu (1:02.28) Nolwenn Hervé (1:10.19) Guillaume Garzotto (56.00) Maxime Cadiat (50.83) | 3:59.30 | |||
| 6 | 7 | Berk Özkul (57.75) Beste Samancı (1:11.71) Erge Can Gezmiş (55.32) Zeynep Odabaşı (58.84) | 4:03.62 | |||
| 7 | 1 | Dominik Varga (57.10) Zsófia Leitner (1:13.48) Boglárka Bonecz (1:02.47) Ármin Reményi (50.97) | 4:04.02 | |||
| 2 | DSQ |