2023 World Aquatics Championships

Originally scheduled to be held in 2021 as the 19th championships, the championships were postponed until May 2022 in response to the rescheduling of the 2020 Summer Olympics in Tokyo to 2021 due to the COVID-19 pandemic. The event was pushed back a second time to 2023 due to ongoing travel restrictions and safety measures in place in Japan. In its place, Budapest hosted the 19th Championships from 18 June to 3 July 2022, while the originally scheduled 2023 championships in Doha, Qatar, were moved to 2024.

20th World Aquatics Championships
Host city	Fukuoka, Japan
Date(s)	14–30 July 2023
Venue(s)	3
Nations participating	195
Athletes participating	2,392
Officially opened by	Fumihito
← Budapest 2022 Doha 2024 →

It was the second time Fukuoka hosted the event having previously held the 9th World Aquatics Championships in 2001, with South Africa's Roland Schoeman (swimming) and Brazil-Spain's Felipe Perrone (water polo) the only two athletes to compete in both the 2001 and 2023 championships.

The championships included 2,392 athletes competing from 192 member federations. While originally listed as 195 nations competing, due to the status of their member federation with World Aquatics, athletes from both the Philippines and Kenya were required to compete under the banner 'Suspended Member Federation', while two athletes of Syria competed under the banner 'World Aquatics Refugee Team'. World Aquatics ban on athletes from Russia and Belarus remained in effect for these championships.

These championships were the first edition of the championships to be held under the new World Aquatics branding following the renaming of the Fédération Internationale de Natation (FINA) in December 2022.

The competition was originally to be held in Budapest, Hungary, in the summer of 2021. This was announced on 19 July 2013, at the biennial General Congress of World Aquatics (then FINA) in Barcelona, the host-city of the 2013 World Aquatics Championships.

However, in March 2015, it was announced that Budapest would instead host the 2017 Championships, after Guadalajara, Mexico, pulled out from the organization of the championships for financial reasons. A new bidding procedure was opened for both the 2021 and 2023 events.

On 9 June 2015, World Aquatics (then FINA) reported it had received expressions of interest for the 2021 and 2023 FINA World Championships from Argentina, Australia (Melbourne or Sydney), China (Wuhan or Nanjing), Germany (two potential cities), Japan, Turkey and Qatar. On 30 June 2015, an information meeting was organised for the nations and cities which had shown interest in bidding. This meeting was attended by representatives of cities from six countries: Abu Dhabi (United Arab Emirates), Buenos Aires (Argentina), Istanbul (Turkey), Nanjing (China), Fukuoka (Japan), Doha (Qatar). Bidding cities were then asked to present FINA with an executed Host City Agreement by October 26, 2015, and to make a formal presentation to the FINA Bureau on November 8, 2015. Australia and Germany were the first two countries to quit the bidding race and were followed by Argentina. Two others, Turkey and United Arab Emirates, had also shown interest, but withdrew before the presentation stage. With all other interested cities formerly withdrawing, on October 2, 2015, FINA executive director Cornel Marculescu confirmed there were three final bidders: Nanjing (China), Fukuoka (Japan), and Doha (Qatar).

On 31 January 2016, each of the bids were presented in a formal presentation at the FINA Bureau meeting in Budapest. After a vote, FINA announced Fukuoka as 2021 hosts and Doha as 2023 hosts.

In a press release issued on the same day, FINA President Julio Maglione stated: “Today we were presented three extraordinary bids fulfilling all requirements and having great facilities. Both winning cities, Fukuoka and Doha, are strong partners of FINA and will offer optimal conditions for the organisation of these Championships. There is a very strong commitment from the local authorities to welcome this event in their respective dynamic metropolis.”

The Fukuoka championships had three main venue precincts. Swimming, artistic swimming, the closing ceremony, and the international broadcast center, were all based at Marine Messe Fukuoka Hall A (part of the Fukuoka Convention Center), built for the 1995 Summer Universiade and also used during the 2001 World Aquatics Championships. Water polo events were based at the newly built Marine Messe Fukuoka Hall B. The opening ceremony was held at Boat Race Fukuoka in Fukuoka City.

• Marine Messe Fukuoka Hall A (swimming, artistic swimming, closing ceremony)
• Marine Messe Fukuoka Hall B (water polo)
• Fukuoka Prefectural Pool (diving)
• Seaside Momochi Beach Park (open water swimming, high diving)
• Boat Race Fukuoka (opening ceremony)

A total of 75 medal events were held across six disciplines. The program returned to the traditional schedule with artistic swimming, diving, and open water swimming staged during week one, swimming and high diving in week two, and water polo matches across both weeks.

  *   Host nation (Japan)

Rank	Nation	Gold	Silver	Bronze	Total
1	China	20	8	12	40
2	Australia	15	9	6	30
3	United States	7	22	15	44
4	Japan*	4	1	5	10
5	France	4	0	4	8
6	Germany	4	0	3	7
7	Spain	3	2	4	9
8	Italy	2	7	5	14
9	Great Britain	2	5	5	12
10	Canada	2	3	5	10
11	Hungary	2	2	0	4
12	Tunisia	2	1	0	3
13	Lithuania	2	0	0	2
	Sweden	2	0	0	2
15	Netherlands	1	2	2	5
16	Austria	1	2	0	3
17	Romania	1	1	0	2
	South Africa	1	1	0	2
19	Mexico	0	5	2	7
20	Ukraine	0	1	1	2
21	Colombia	0	1	0	1
	Greece	0	1	0	1
	Hong Kong	0	1	0	1
	Poland	0	1	0	1
	Portugal	0	1	0	1
26	Brazil	0	0	1	1
	Kazakhstan	0	0	1	1
	New Zealand	0	0	1	1
	South Korea	0	0	1	1
	Switzerland	0	0	1	1
Totals (30 entries)		75	77	74	226

• 2023 World Para Swimming Championships in Manchester, United Kingdom