Budapest, in Hungary, had originally been earmarked to host the 2021 championships but, instead, stepped in to stage the 2017 event after the withdrawal of Mexican city Guadalajara, who cited financial problems.
Fukuoka and Doha were chosen ahead of Chinese city Nanjing for the 2021 and 2023 editions.
Dr Thani Al Kuwari, Secretary General of Qatar Olympic Committee, celebrated the winning of another major event, telling the FINA website: "Hosting the FINA World Championships for the first time in Middle East will be a great way to develop Aquatics on a global scale."
(Reporting by Ian Chadband)
