the 21st edition of the World Aquatics Championships 2024, in Doha, Qatar, from 2 to 18 February 2024. Originally scheduled to be held in November 2023, the championships were postponed until February 2024 in response to the rescheduling of the 20th edition of the World Aquatics Championships in Fukuoka, Japan, from 2021 to 2022 due to the COVID-19 pandemic, and then again to 14 to 30 July 2023 due to travel restrictions and safety measures in place in Japan.

It is the first time the World Aquatics Championships will be staged in the Middle East. Doha staged the World Aquatics Swimming Championships (25m) in 2014, and has also staged nine legs of the World Aquatics Swimming World Cup series between 2012 and 2021.

The tournament featured the largest number of athletes in comparison with previous events, in which more than 2,600 participants hailing from 201 countries, in addition to the World Aquatics Refugee team, competed in 75 medals events. However, the competition witnessed the notable absence of numerous top swimmers, with only seven out of the 22 individual gold medalists from the 2023 World Aquatics Championships in Fukuoka taking part in the event in order to defend their last year's titles. A number of swimmers and member federations have expressed concerns regarding the timing of these championships, given they take place just five months before the 2024 Summer Olympics in Paris.