# Swimming at the 2014 Summer Youth Olympics – Mixed 4 × 100 metre freestyle relay

The mixed 4 × 100 metre freestyle relay event in swimming at the 2014 Summer Youth Olympics took place on 17 August at the Nanjing Olympic Sports Centre in Nanjing, China.

## Results
### Heats

The heats were held at 11:22.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 3 | 3 | Li Zhuhao (52.29) Qiu Yuhan (53.71) Yu Hexin (48.96) Zhang Yufei (54.40) | China | 3:29.36 | Q |
| 2 | 3 | 5 | Matheus Santana (49.55) Luiz Altamir Melo (50.66) Natalia de Luccas (57.07) Giovanna Diamante (55.86) | Brazil | 3:33.14 | Q |
| 3 | 2 | 7 | Kyle Stolk (50.30) Kim Busch (57.70) Robin Neumann (56.01) Laurent Bams (50.42) | Netherlands | 3:34.43 | Q |
| 4 | 2 | 8 | Filipp Shopin (51.15) Aleksandr Sadovnikov (51.69) Rozaliya Nasretdinova (56.49) Daria S. Ustinova (56.07) | Russia | 3:35.40 | Q |
| 5 | 2 | 6 | Duncan Scott (50.39) Martyn Walton (51.19) Amelia Maughan (55.98) Charlotte Atkinson (57.85) | Great Britain | 3:35.41 | Q |
| 6 | 3 | 4 | Nic Groenewald (53.68) Ami Matsuo (54.18) Brianna Throssell (56.19) Nicholas Brown (52.46) | Australia | 3:36.51 | Q |
| 7 | 3 | 2 | Damian Wierling (50.64) Mandy Feldbinder (57.56) Patricia Wartenberg (58.05) Alexander Kunert (50.93) | Germany | 3:37.18 | Q |
| 8 | 2 | 3 | Juan Marín (52.09) Sandra Pallarés (57.43) Gonzalo Carazo (51.92) África Zamorano (56.69) | Spain | 3:38.13 | Q |
| 9 | 1 | 5 | Žan Pogačar (52.95) Grega Popović (53.22) Nastja Govejšek (55.54) Tjaša Pintar (56.46) | Slovenia | 3:38.17 | |
| 10 | 2 | 5 | Javier Acevedo (50.35) Matthew Mac (52.81) Danielle Hanus (58.10) Danika Huizinga (57.56) | Canada | 3:38.82 | |
| 11 | 1 | 3 | Patrick Conaton (52.05) Clara Smiddy (56.59) Meghan Small (59.47) Patrick Mulcare (51.38) | United States | 3:39.49 | |
| 12 | 3 | 8 | Marlies Ross (57.90) Chris Reid (51.64) Brent Szurdoki (52.62) Nathania van Niekerk (58.65) | South Africa | 3:40.81 | |
| 13 | 3 | 1 | Henrik Christiansen (52.86) Armin Porobic (52.46) Elise Olsen (56.54) Sofie Reisænen (59.86) | Norway | 3:41.72 | |
| 14 | 3 | 6 | Guillaume Laure (51.77) Emma Terebo (58.98) Pauline Mahieu (59.10) Jean Dencausse (52.32) | France | 3:42.17 | |
| 15 | 2 | 2 | Ippei Watanabe (52.17) Koki Tsunefuka (53.30) Jurina Shiga (58.01) Rina Yoshimura (59.26) | Japan | 3:42.74 | |
| 16 | 1 | 4 | Dylan Koo (54.73) Marína Chan (57.86) Samantha Yeo (1:00.68) Darren Lim (51.01) | Singapore | 3:44.28 | |
| 17 | 3 | 7 | Song Suk-gyu (56.28) Park Jin-young (58.77) Yang Ji-won (1:02.36) Kim Jae-youn (54.40) | South Korea | 3:51.81 | |
| 18 | 2 | 1 | Michael Mincham (52.79) Jacob Garrod (57.05) Bobbi Gichard (1:03.04) Gabrielle Fa'amausili (1:01.50) | New Zealand | 3:54.38 | |
| | 2 | 4 | | Belgium | DNS | |

### Final

The final was held at 18:51.
| Rank | Lane | Name | Nationality | Time | Notes |
| | 4 | Li Guangyuan (50.94) Qiu Yuhan (54.04) Yu Hexin (48.61) Shen Duo (53.43) | China | 3:27.02 | WJR |
| | 5 | Luiz Altamir Melo (50.90) Natalia de Luccas (57.07) Matheus Santana (47.73) Giovanna Diamante (55.85) | Brazil | 3:31.55 | |
| | 7 | Kyle Chalmers (50.35) Ami Matsuo (54.35) Brianna Throssell (55.60) Nicholas Brown (51.46) | Australia | 3:31.76 | |
| 4 | 6 | Filipp Shopin (50.32) Evgeny Rylov (50.66) Rozaliya Nasretdinova (55.89) Daria S. Ustinova (55.28) | Russia | 3:32.15 | |
| 5 | 3 | Kyle Stolk (50.10) Esmee Bos (57.01) Robin Neumann (55.84) Laurent Bams (50.24) | Netherlands | 3:33.19 | |
| 6 | 2 | Duncan Scott (50.16) Martyn Walton (50.78) Amelia Maughan (55.50) Charlotte Atkinson (56.84) | Great Britain | 3:33.28 | |
| 7 | 1 | Damian Wierling (50.01) Mandy Feldbinder (57.29) Patricia Wartenberg (57.54) Alexander Kunert (51.67) | Germany | 3:36.51 | |
| 8 | 8 | Juan Marín (51.53) Sandra Pallarés (57.77) Gonzalo Carazo (51.54) África Zamorano (57.26) | Spain | 3:38.10 | |