| World Aquatics Junior Swimming Championships 2025 | |
|---|---|
 | |
| Host city | Otopeni,Romania |
| Date | 19–24 August |
The10thWorld Aquatics Junior Swimming Championships were held inOtopeni,Romania, from 19 to 24 August 2025.[1][2]
* Host nation (Romania)
| Rank | Nation | Gold | Silver | Bronze | Total |
|---|---|---|---|---|---|
| 1 |  United States | 10 | 6 | 6 | 22 |
| 2 |  Neutral Athletes B | 5 | 5 | 5 | 15 |
| 3 |  China | 5 | 3 | 3 | 11 |
| 4 |  Japan | 4 | 8 | 6 | 18 |
| 5 |  Great Britain | 3 | 7 | 5 | 15 |
| 6 |  Italy | 3 | 2 | 7 | 12 |
| 7 |  Turkey | 3 | 0 | 1 | 4 |
| 8 |  Lithuania | 2 | 1 | 1 | 4 |
| 9 |  Ireland | 2 | 0 | 1 | 3 |
| 10 |  South Korea | 1 | 1 | 1 | 3 |
| 11 |  Argentina | 1 | 1 | 0 | 2 |
| 12 |  Australia | 1 | 0 | 0 | 1 |
 New Zealand | 1 | 0 | 0 | 1 | |
 South Africa | 1 | 0 | 0 | 1 | |
 Ukraine | 1 | 0 | 0 | 1 | |
| 16 |  Germany | 0 | 3 | 0 | 3 |
| 17 |  Romania* | 0 | 1 | 1 | 2 |
| 18 |  Brazil | 0 | 1 | 0 | 1 |
 Hungary | 0 | 1 | 0 | 1 | |
 Nigeria | 0 | 1 | 0 | 1 | |
| 21 |  Canada | 0 | 0 | 1 | 1 |
 Croatia | 0 | 0 | 1 | 1 | |
 Czech Republic | 0 | 0 | 1 | 1 | |
 Denmark | 0 | 0 | 1 | 1 | |
 Greece | 0 | 0 | 1 | 1 | |
| Totals (25 entries) | 43 | 41 | 42 | 126 | |
| Event | Gold | Silver | Bronze | |||
|---|---|---|---|---|---|---|
| 4×100 m freestyle relay[43] |  United States (USA)Michael Rice (49.80) Rowan Cox (49.21) Rylee Erisman (53.11) Lily King (53.91) Luke Danail Vatev[a] Austin Carpenter[a] Liberty Clark[a] Julie Mishler[a] | 3:26.03 | Great Britain (GBR) Gabriel Shepherd (49.72) Jacob Mills (47.76) Skye Carter (54.63) Theodora Taylor (54.06) | 3:26.17 | Italy (ITA) Gabriele Valente (49.69) Carlos D’Ambrosio (47.40) Ludovica di Maria (55.01) Alessandra Mao (54.69) Francesco Ceolin[a] Chiara Sama[a] | 3:26.79 |
| 4×100 m medley relay[44] | Japan (JPN) Yumeki Kojima (54.90) Shin Ohashi (58.52) Mizuki Hirai (56.68) Yui Fukuoka (55.47) Toya Hirata[a] | 3:45.57 | United States (USA) Gavin Keogh (54.07) Gabe Nunziata (1:00.80) Charlotte Crush (58.20) Rylee Erisman (53.05) Collin Holgerson[a] Andrew Eubanks[a] Mena Boardman[a] Liberty Clark[a] | 3:46.12 | Great Britain (GBR) Blythe Kinsman (1:01.15) Filip Nowacki (58.83) Dean Fearn (52.43) Theodora Taylor (54.02) Max Morgan[a] Jacob Mills[a] | 3:46.43 |
The following junior world andchampionship records were set during the competition:
| Date | Round | Event | Time | Name | Nation |
|---|---|---|---|---|---|
| 19 August | Final | Men's 4 × 100 metre freestyle relay | 3:15.38 | Mikhail Shcherbakov (49.13) Roman Zhidkov (48.37) Egor Proshin (48.98) Georgii Zlotnikov (48.90) | Neutral Athletes B |
| 21 August | Semifinal 2 | Men's 50 metre freestyle | =21.75 | Nikita Sheremet | Ukraine |
| 23 August | Heat 9 | Men's 50 metre breaststroke | 26.95 | Jan Malte Gräfe | Germany |
| 23 August | Final | Women's 4 × 100 metre freestyle relay | 3:35.53 | Rylee Erisman (53.41) Liberty Clark (53.85) Julie Mishler (54.65) Lily King (53.62) | United States |
| Date | Round | Event | Time | Name | Nation |
|---|---|---|---|---|---|
| 19 August | Final | Women's 400 metre individual medley | 4:34.34 | Agostina Hein | Argentina |
| 20 August | Heat 11 | Women's 100 metre freestyle | 53.17 | Rylee Erisman | United States |
| 20 August | Final | Men's 200 metre freestyle | 1:45.15 | Carlos D’Ambrosio | Italy |
| 20 August | Semifinal 2 | Women's 100 metre freestyle | 53.09 | Rylee Erisman | United States |
| 20 August | Final | Men's 200 metre individual medley | 1:57.25 | Mikhail Shcherbakov | Neutral Athletes B |
| 21 August | Final | Women's 200 metre backstroke | 2:06.99 | Audrey Derivaux | United States |
| 21 August | Final | Women's 100 metre freestyle | 52.79 | Rylee Erisman | United States |
| 22 August | Semifinal 1 | Women's 50 metre backstroke | 27.77 | Kim Seung-won | South Korea |
| 22 August | Final | Men's 200 metre breaststroke | 2:07.32 | Filip Nowacki | Great Britain |
| 22 August | Final | Women's 400 metre freestyle | 4:05.38 | Yang Peiqi | China |
| 23 August | Semifinal 2 | Women's 100 metre butterfly | 57.02 | Mizuki Hirai | Japan |
| 24 August | Final | Women's 100 metre butterfly | 56.87 | Mizuki Hirai | Japan |
| 24 August | Final | Women's 200 metre freestyle | 1:56.25 | Yang Peiqi | China |
Swimmers from the following 126 countries competed at the Championships.
Albania
Angola
Antigua and Barbuda Argentina
Armenia
Aruba Australia
Austria
Azerbaijan
Bahamas
Bahrain
Barbados
Bolivia (7)
Bosnia and Herzegovina (3)
Botswana (3) Brazil (16)
Brunei (1)
Bulgaria (5)
Cambodia (3) Canada (18)
Cape Verde (1)
Central African Republic (2)
Chile (4) China (10)
Chinese Taipei (1)
Colombia (6)
Cook Islands (2)
Costa Rica (8) Croatia (8)
Cuba (2)
Curaçao (3) Czech Republic (10) Denmark (2)
Djibouti (1)
Dominican Republic (9)
Ecuador (2)
Egypt (2)
Estonia (4)
Ethiopia (2)
Fiji (4)
Finland (2)
France (12) Germany (10)
Ghana Great Britain Greece
Grenada
Guatemala (7)
Honduras (10)
Hong Kong (5) Hungary (30)
India (7)
Indonesia (3)
Iran (3) Ireland (3)
Israel (5) Italy (17)
Jamaica (8) Japan (9)
Jordan (4)
Kazakhstan (2)
Kenya (5)
Kosovo (8)
Kyrgyzstan (3)
Latvia (3)
Lebanon (6) Lithuania (6)
Madagascar (9)
Malaysia (4)
Malawi (3)
Maldives (3)
Malta (6)
Mexico (20)
Moldova (1)
Mongolia (8)
Namibia (4)
Nepal (8) New Zealand (7) Nigeria (4)
North Korea (1)
North Macedonia (2)
Pakistan (9)
Palestine (2)
Panama (3)
Paraguay (12)
Peru
Philippines
Poland
Portugal
Puerto Rico Romania
Saint Lucia
Saint Vincent and the Grenadines
Senegal
Serbia
Seychelles
Sierra Leone
Singapore
Slovakia
Slovenia South Africa South Korea
Spain
Sri Lanka
Sudan
Suriname
Sweden
Syria
Tajikistan
Tanzania
Timor-Leste
Tunisia Turkey
United Arab Emirates
Uganda Ukraine
Uruguay United States
United States Virgin Islands
Uzbekistan
Venezuela
Vietnam
Zambia
Zimbabwe