| | Event type
4 × 100 metres Freestyle Relay, Mixed Youth
| Date | 16 August 2014 |
|---|---|
| Status | YOG |
| Location | Nanjing Olympic Sports Centre Natatorium, Nanjing Olympic Sports Centre, Jiangning, Nanjing |
| Participants | 77 from 18 countries |
Round One
| Date | 16 August 2014 — 11:22 |
|---|---|
| Format | Fastest 8 teams to final round. |
Heat #1
| Time | 11:22 |
|---|
| Pos | Competitors | NOC | Time | ||
|---|---|---|---|---|---|
| 1 | Slovenia |  SLO | 3:38.17 | ||
| Nastja Govejšek | – | ||||
| Tjaša Pintar | – | ||||
| Žan Pogačar | – | ||||
| Grega Popovic | – | ||||
| 2 | United States |  USA | 3:39.49 | ||
| Patrick Conaton | – | ||||
| Patrick Mulcare | – | ||||
| Meghan Small | – | ||||
| Clara Smiddy | – | ||||
| 3 | Singapore |  SGP | 3:44.28 | ||
| Marina Chan | – | ||||
| Dylan Koo | – | ||||
| Darren Lim | – | ||||
| Samantha Yeo | – |
Heat #2
| Pos | Competitors | NOC | Time | ||
|---|---|---|---|---|---|
| 1 | Netherlands |  NED | 3:34.43 | ||
| Laurent Bams | – | ||||
| Kim Busch | – | ||||
| Robin Neumann | – | ||||
| Kyle Stolk | – | ||||
| 2 | Russian Federation |  RUS | 3:35.40 | ||
| Rozaliya Nasretdinova | – | ||||
| Aleksandr Sadovnikov | – | ||||
| Filipp Shopin | – | ||||
| Darya Ustinova | – | ||||
| 3 | Great Britain |  GBR | 3:35.41 | ||
| Charlotte Atkinson | – | ||||
| Amelia Maughan | – | ||||
| Duncan Scott | – | ||||
| Martyn Walton | – | ||||
| 4 | Spain |  ESP | 3:38.13 | ||
| Gonzalo Carazo | – | ||||
| Juan Marín | – | ||||
| Sandra Pallares | – | ||||
| África Zamorano | – | ||||
| 5 | Canada |  CAN | 3:38.82 | ||
| Javier Acevedo | – | ||||
| Danielle Hanus | – | ||||
| Danika Huizinga | – | ||||
| Matthew Mac | – | ||||
| 6 | Japan |  JPN | 3:42.74 | ||
| Jurina Shiga | – | ||||
| Koki Tsunefuka | – | ||||
| Ippei Watanabe | – | ||||
| Rina Yoshimura | – | ||||
| 7 | New Zealand |  NZL | 3:54.38 | ||
| Gabrielle Fa'Amausili | – | ||||
| Jacob Garrod | – | ||||
| Bobbi Gichard | – | ||||
| Michael Mincham | – | ||||
| Belgium |  BEL | – |
Heat #3
| Pos | Competitors | NOC | Time | ||
|---|---|---|---|---|---|
| 1 | People's Republic of China |  CHN | 3:29.36 | ||
| Li Zhuhao | – | ||||
| Qiu Yuhan | – | ||||
| Yu Hexin | – | ||||
| Zhang Yufei | – | ||||
| 2 | Brazil |  BRA | 3:33.14 | ||
| Luiz Altamir | – | ||||
| Natalia de Luccas | – | ||||
| Matheus Santana | – | ||||
| Giovanna Diamante | – | ||||
| 3 | Australia |  AUS | 3:36.51 | ||
| Nic Brown | – | ||||
| Nic Groenewald | – | ||||
| Ami Matsuo | – | ||||
| Brianna Throssell | – | ||||
| 4 | Germany |  GER | 3:37.18 | ||
| Mandy Feldbinder | – | ||||
| Alexander Kunert | – | ||||
| Patricia-Lucia Wartenberg | – | ||||
| Damian Wierling | – | ||||
| 5 | South Africa |  RSA | 3:40.81 | ||
| Chris Reid | – | ||||
| Marlies Ross | – | ||||
| Brent Szurdoki | – | ||||
| Nathania van Niekerk | – | ||||
| 6 | Norway |  NOR | 3:41.72 | ||
| Henrik Christiansen | – | ||||
| Elise Olsen | – | ||||
| Armin Porobic | – | ||||
| Sofie Reisænen | – | ||||
| 7 | France |  FRA | 3:42.17 | ||
| Jean Dencausse | – | ||||
| Guillaume Laure | – | ||||
| Pauline Mahieu | – | ||||
| Emma Terebo | – | ||||
| 8 | Republic of Korea |  KOR | 3:51.81 | ||
| Kim Jae-Yun | – | ||||
| Park Jin-Yeong | – | ||||
| Song Seok-Gyu | – | ||||
| Yang Ji-Won | – |
Final Round
| Date | 16 August 2014 — 18:51 |
|---|
| Pos | Competitors | NOC | Time | ||
|---|---|---|---|---|---|
| 1 | People's Republic of China | CHN | 3:27.02 | ||
| Li Guangyuan | – | ||||
| Qiu Yuhan | – | ||||
| Shen Duo | – | ||||
| Yu Hexin | – | ||||
| 2 | Brazil | BRA | 3:31.55 | ||
| Luiz Altamir | – | ||||
| Natalia de Luccas | – | ||||
| Matheus Santana | – | ||||
| Giovanna Diamante | – | ||||
| 3 | Australia | AUS | 3:31.76 | ||
| Nic Brown | – | ||||
| Kyle Chalmers | – | ||||
| Ami Matsuo | – | ||||
| Brianna Throssell | – | ||||
| 4 | Russian Federation | RUS | 3:32.15 | ||
| Rozaliya Nasretdinova | – | ||||
| Yevgeny Rylov | – | ||||
| Filipp Shopin | – | ||||
| Darya Ustinova | – | ||||
| 5 | Netherlands | NED | 3:33.19 | ||
| Laurent Bams | – | ||||
| Esmee Bos | – | ||||
| Robin Neumann | – | ||||
| Kyle Stolk | – | ||||
| 6 | Great Britain | GBR | 3:33.28 | ||
| Charlotte Atkinson | – | ||||
| Amelia Maughan | – | ||||
| Duncan Scott | – | ||||
| Martyn Walton | – | ||||
| 7 | Germany | GER | 3:36.51 | ||
| Mandy Feldbinder | – | ||||
| Alexander Kunert | – | ||||
| Patricia-Lucia Wartenberg | – | ||||
| Damian Wierling | – | ||||
| 8 | Spain | ESP | 3:38.10 | ||
| Gonzalo Carazo | – | ||||
| Juan Marín | – | ||||
| Sandra Pallares | – | ||||
| África Zamorano | – |