# 2023 World Aquatics Junior Swimming Championships

The 9th World Aquatics Junior Swimming Championships were held in Netanya, Israel, at the Wingate Institute from 4 to 9 September 2023. These championships were the first to be held under the new World Aquatics name and branding. The age groups for these championships were altered slightly from the previous championships in 2022, with the equalisation of age groups to 14-18 years for both genders (athletes age as of 31 December 2023). In total 648 athletes from 93 member federations competed at the championships. Due to the status of their member federation athletes from the Philippines were required to compete as 'Neutral Independent Athletes'. Three large member federations opted not to compete at these championships, being Great Britain, France, and Hungary.
The United States of America topped the medal tally and were awarded the World Aquatics Team of the Championships award. Ukraine's Oleksandr Zheltiakov was awarded the World Aquatics Male Swimmer of the Championships award and Bosnia and Herzegovina’s Lana Pudar was awarded the World Aquatics Female Swimmer of the Championships award.

## Medal summary
### Medal table

* Host nation (Israel)
| Rank | Medal | Gold | Silver | Bronze | Total |
| 1 | United States | 15 | 11 | 7 | 33 |
| 2 | Australia | 9 | 7 | 8 | 24 |
| 3 | Canada | 2 | 3 | 8 | 13 |
| 4 | Bosnia and Herzegovina | 2 | 1 | 0 | 3 |
| 4 | Denmark | 2 | 1 | 0 | 3 |
| 4 | Ukraine | 2 | 1 | 0 | 3 |
| 7 | Turkey | 2 | 0 | 0 | 2 |
| 8 | China | 1 | 4 | 4 | 9 |
| 9 | Japan | 1 | 3 | 3 | 7 |
| 10 | Bulgaria | 1 | 2 | 0 | 3 |
| 11 | Estonia | 1 | 1 | 1 | 3 |
| 12 | Czech Republic | 1 | 1 | 0 | 2 |
| 13 | Hong Kong | 1 | 0 | 0 | 1 |
| 13 | Indonesia | 1 | 0 | 0 | 1 |
| 13 | Trinidad and Tobago | 1 | 0 | 0 | 1 |
| 16 | Italy | 0 | 4 | 8 | 12 |
| 17 | Austria | 0 | 1 | 1 | 2 |
| 18 | New Zealand | 0 | 1 | 0 | 1 |
| 18 | South Korea | 0 | 1 | 0 | 1 |
| 20 | Argentina | 0 | 0 | 2 | 2 |
| 21 | Spain | 0 | 0 | 1 | 1 |
| Totals (21 entries) | Totals (21 entries) | 42 | 42 | 43 | 127 |

### Men

| Event | Gold | Gold | Silver | Silver | Bronze | Bronze |
| 50 m freestyle | Nikoli Blackman Trinidad and Tobago | 22.35 | Flynn Southam Australia | 22.43 | Lorenzo Ballarati Italy | 22.47 |
| 100 m freestyle | Maximus Williamson United States | 48.45 | Lorenzo Ballarati Italy | 49.05 | Edward Sommerville Australia | 49.16 |
| 200 m freestyle | Flynn Southam Australia | 1:46.57 | Alessandro Ragaini Italy | 1:47.28 | Anders McAlpine Australia | 1:47.94 |
| 400 m freestyle | Petar Mitsin Bulgaria | 3:46.49 | Alessandro Ragaini Italy | 3:46.66 | Filippo Bertoni Italy | 3:48.73 |
| 800 m freestyle | Kuzey Tunçelli Turkey | 7:48.75 | Petar Mitsin Bulgaria | 7:49.36 | Zhang Zhanshuo China | 7:50.03 |
| 1500 m freestyle | Kuzey Tunçelli Turkey | 14:59.80 | Kim Jun-woo South Korea | 15:01.94 | Zhang Zhanshuo China | 15:11.94 |
| 50 m backstroke | Miroslav Knedla Czech Republic | 24.80 | Oleksandr Zheltyakov Ukraine | 24.91 NR | Ulises Saravia Argentina | 25.02 |
| 100 m backstroke | Oleksandr Zheltyakov Ukraine | 53.73 NR | Miroslav Knedla Czech Republic | 54.01 | Christian Bacico Italy | 54.08 |
| 200 m backstroke | Oleksandr Zheltyakov Ukraine | 1:56.13 | Daniel Diehl United States | 1:58.93 | Christian Bacico Italy | 1:59.33 |
| 50 m breaststroke | Felix Viktor Iberle Indonesia | 27.39 | Jonas Gaur Denmark | 27.55 | Watson Nguyen United States | 27.85 |
| 100 m breaststroke | Joshua Chen United States | 1:00.70 | Yamato Okadome Japan | 1:01.20 | Watson Nguyen United States | 1:01.22 |
| 200 m breaststroke | Adam Mak Sai-ting Hong Kong | 2:11.84 | Jordan Willis United States | 2:12.07 | Riku Yamaguchi Japan | 2:12.13 |
| 50 m butterfly | Casper Puggaard Denmark | 23.50 | Lukas Edl Austria | 23.89 | Thomas Pattison Australia | 23.95 |
| 100 m butterfly | Casper Puggaard Denmark | 52.30 | Wang Xizhe China | 52.65 | Lukas Edl Austria | 52.68 |
| 200 m butterfly | Wang Xizhe China | 1:56.22 | Petar Mitsin Bulgaria | 1:56.73 | Alessandro Ragaini Italy | 1:57.79 |
| 200 m individual medley | Maximus Williamson United States | 1:57.29 CR | Daniel Diehl United States | 1:58.62 | Lorne Wigginton Canada | 1:59.44 |
| 400 m individual medley | Tomoyuki Matsushita Japan | 4:10.97 CR | Zhang Zhanshuo China | 4:12.44 | Lorne Wigginton Canada | 4:12.81 |
| 4×100 m freestyle relay | United States (USA) Daniel Diehl (49.93) Maximus Williamson (47.78) Hudson Williams (49.14) Jason Zhao (48.64) Jacob Wimberly Ethan Harrington | 3:15.49 WJ | Australia (AUS) Edward Sommerville (49.24) Marcus da Silva (49.53) Anders McAlpine (49.45) Flynn Southam (48.47) Tane Bidois Thomas Pattison | 3:16.69 | Canada (CAN) Filip Senc-Samardzic (49.80) Paul Dardis (49.15) Antoine Sauve (48.73) Aiden Norman (49.66) | 3:17.34 |
| 4×200 m freestyle relay | United States (USA) Maximus Williamson (1:47.11) Cooper Lucas (1:47.75) Jason Zhao (1:47.56) Daniel Diehl (1:46.61) Norvin Clontz Ryan Erisman Nathan Szobota Jacob Wimberly | 7:09.03 | China (CHN) Wang Xizhe (1:48.05) Ji Yicun (1:48.76) Liu Wudi (1:48.50) Zhang Zhanshuo (1:47.06) | 7:13.37 | Australia (AUS) Anders McAlpine (1:49.17) Edward Sommerville (1:47.91) Marcus da Silva (1:49.68) Flynn Southam (1:49.26) Karl Albertyn Ike Martinez | 7:16.02 |
| 4×100 m medley relay | United States (USA) Daniel Diehl (54.37) Joshua Chen (1:00.25) Jacob Wimberly (53.79) Maximus Williamson (47.57) Caleb Maldari Watson Nguyen Jason Zhao Hudson Williams | 3:35.98 | Italy (ITA) Christian Bacico Christian Mantegazza Daniele Momoni Davide Passafaro Daniele Del Signore Carlos D'Ambrosio Mirko Chiaversoli | 3:38.00 | China (CHN) Jiang Chenglin Zhang Zhanshuo Wang Xizhe Ji Yicun Liu Wudi | 3:39.81 |
$^a$ Swimmers who participated in the heats only and received medals.

### Women

| Event | Gold | Gold | Silver | Silver | Bronze | Bronze |
| 50 m freestyle | Olivia Wunsch Australia | 24.59 =CR | Annam Olasewere United States | 24.95 | Hannah Casey Australia | 25.07 |
| 100 m freestyle | Olivia Wunsch Australia | 53.71 | Milla Jansen Australia | 54.08 | Anna Moesch United States | 54.69 |
| 200 m freestyle | Addison Sauickie United States | 1:58.09 | Julie Brousseau Canada | 1:58.10 | Leah Hayes United States | 1:58.19 |
| 400 m freestyle | Jamie Perkins Australia | 4:05.72 | Madi Mintenko United States | 4:08.06 | Addison Sauickie United States | 4:08.94 |
| 800 m freestyle | Kayla Han United States | 8:29.66 | Mao Yihan China | 8:33.66 | Agostina Hein Argentina | 8:33.90 |
| 1500 m freestyle | Kate Hurst United States | 16:09.37 | Ruka Takezawa Japan | 16:18.68 | Mao Yihan China | 16:18.76 |
| 50 m backstroke | Iona Anderson Australia | 28.01 | Erika Pelaez United States | 28.07 | Jaclyn Barclay Australia | 28.14 |
| 100 m backstroke | Jaclyn Barclay Australia | 59.47 | Iona Anderson Australia | 59.88 | Erika Pelaez United States | 59.94 |
| 200 m backstroke | Teagan O'Dell United States | 2:08.09 | Jojo Ramey United States | 2:10.18 | Bella Grant Australia | 2:11.24 |
| 50 m breaststroke | Eneli Jefimova Estonia | 30.42 | Monique Wieruszowski New Zealand | 30.68 | Piper Enge United States | 30.74 |
| 100 m breaststroke | Alexanne Lepage Canada | 1:06.58 | Eneli Jefimova Estonia | 1:06.84 | Jimena Ruiz Spain | 1:07.25 |
| 200 m breaststroke | Alexanne Lepage Canada | 2:24.70 | Mina Nakazawa Japan | 2:25.57 | Eneli Jefimova Estonia | 2:26.29 |
| 50 m butterfly | Leah Shackley United States | 26.20 | Lana Pudar Bosnia and Herzegovina | 26.26 | Olivia Wunsch AustraliaMizuki Hirai Japan | 26.53 |
| 100 m butterfly | Lana Pudar Bosnia and Herzegovina | 57.77 | Leah Shackley United States | 58.29 | Mizuki Hirai Japan | 58.35 |
| 200 m butterfly | Lana Pudar Bosnia and Herzegovina | 2:07.20 CR | Bella Grant Australia | 2:08.97 | Paola Borrelli Italy | 2:10.89 |
| 200 m individual medley | Leah Hayes United States | 2:10.24 CR | Haley McDonald United States | 2:13.18 | Julie Brousseau Canada | 2:13.74 |
| 400 m individual medley | Leah Hayes United States | 4:36.84 CR | Ella Jansen Canada | 4:37.35 | Julie Brousseau Canada | 4:38.45 |
| 4×100 m freestyle relay | Australia (AUS) Milla Jansen Hannah Casey Jaimie de Lutiis Olivia Wunsch Jamie Perkins Amelia Weber | 3:36.52 | United States (USA) Leah Hayes Anna Moesch Addison Sauickie Erika Pelaez Madi Mintenko Teagan O'Dell Bailey Hartman | 3:37.71 | Canada (CAN) Julie Brousseau Ella Jansen Mia West Sienna Angove Delia Lloyd Ella Cosgrove | 3:40.40 |
| 4×200 m freestyle relay | United States (USA) Addison Sauickie Leah Hayes Lynsey Bowen Madi Mintenko Anna Moesch Bailey Hartman | 7:52.48 | Australia (AUS) Jamie Perkins Hannah Casey Jaimie de Lutiis Amelia Weber Bella Grant | 7:52.68 | Canada (CAN) Julie Brousseau Sienna Angove Ella Cosgrove Ella Jansen Mia West Julia Strojnowska | 7:53.09 |
| 4×100 m medley relay | Australia (AUS) Jaclyn Barclay Hayley Mackinder Isabella Boyd Olivia Wunsch Iona Anderson Isabella Johnson Bella Grant Milla Jansen | 4:00.86 | Canada (CAN) Delia Lloyd Alexanne Lepage Ella Jansen Sienna Angove Jordan Greber Halle West Victoria Raymond Julie Brousseau | 4:01.96 | Italy (ITA) Giada Gorlier Francesca Zucca Paola Borrelli Sara Curtis Irene Mati Marina Cacciapuoti | 4:03.34 |
$^a$ Swimmers who participated in the heats only and received medals.

### Mixed

| Event | Gold | Gold | Silver | Silver | Bronze | Bronze |
| 4×100 m freestyle relay | Australia (AUS) Flynn Southam Edward Sommerville Olivia Wunsch Milla Jansen Marcus da Silva Anders McAlpine Jaimie de Lutiis Hannah Casey | 3:24.29 WJ | United States (USA) Maximus Williamson Jason Zhao Erika Pelaez Anna Moesch Jacob Wimberly Hudson Williams Caroline Larsen Madi Mintenko | 3:25.59 | Canada (CAN) Paul Dardis Antoine Sauve Julie Brousseau Ella Jansen Aiden Norman Sienna Angove Mia West | 3:29.14 |
| 4×100 m medley relay | United States (USA) Teagan O'Dell Watson Nguyen Leah Shackley Maximus Williamson Caleb Maldari Joshua Chen Haley McDonald | 3:45.62 | Australia (AUS) Jaclyn Barclay Gideon Burnes Isabella Boyd Edward Sommerville Iona Anderson Joshua Kerr Enoch Robb Jaimie de Lutiis | 3:49.18 | Italy (ITA) Christian Bacico Christian Mantegazza Paola Borrelli Matilde Biagiotti Daniele del Signore Francesca Zucca Lorenzo Ballarati Cristiana Stevanato | 3:50.09 |
$^a$ Swimmers who participated in the heats only and received medals.

## Records

The following junior world and championship records were set during the competition.

### Junior world records

| Date | Round | Event | Time | Name | Nation |
| September 4 | Final | Men's 4 × 100 metre freestyle relay | 3:15.49 | Daniel Diehl (49.93) Maximus Williamson (47.78) Hudson Williams (49.14) Jason Zhao (48.64) | United States |
| September 6 | Final | Mixed 4 × 100 metre freestyle relay | 3:24.29 | Flynn Southam (48.58) Edward Sommerville (48.64) Olivia Wunsch (53.62) Milla Jansen (53.55) | Australia |

### Championship records

| Date | Round | Event | Time | Name | Nation |
| September 4 | Final | Women's 400 metre individual medley | 4:36.84 | Leah Hayes | United States |
| September 5 | Heat 4 | Men's 200 metre individual medley | 1:58.42 | Tomoyuki Matsushita | Japan |
| September 5 | Final | Women's 200 metre butterfly | 2:07.20 | Lana Pudar | Bosnia and Herzegovina |
| September 5 | Final | Men's 200 metre individual medley | 1:57.29 | Maximus Williamson | United States |
| September 6 | Semifinal 2 | Women's 100 metre breaststroke | 1:06.23 | Eneli Jefimova | Estonia |
| September 7 | Final | Women's 200 metre individual medley | 2:10.24 | Leah Hayes | United States |
| September 8 | Heat 7 | Men's 50 metre breaststroke | 26.98 | Felix Viktor Iberle | Indonesia |
| September 8 | Final | Men's 400 metre individual medley | 4:10.97 | Tomoyuki Matsushita | Japan |
| September 9 | Final | Women's 50 metre freestyle | =24.59 | Olivia Wunsch | Australia |
Note: The first version of the results erroneously recognized 3 performances as records. The Women's 50m Breaststroke results recorded championship record performances from Alexanne Lepage and Eneli Jefimova in the heats. Likewise, the performance from Kuzey Tuncelli in the final of the Men's 800m Freestyle was recognized as a championship record. Each performance was slower than the existing championship record. All results were later amended.