2021 FINA World Swimming Championships (25 m)

The qualification period for competing at the 2021 World Swimming Championships ran from 1 December 2019 through 28 November 2021.[9] On 23 November 2021, FINA announced it would take into consideration times swum as part of the 2021 International Swimming League and allow them to count towards qualification for the 2021 World Championships.[10] In addition to country-specific selection procedures, competitors were required to achieve a qualifying "A" or "B" time in an event to qualify for the individual or a relay event with individual entries capped at two competitors per country and relay entries capped at one team per country.[11][12]

Below are the qualifying times for the 2021 World Championships as determined by FINA:[11]

An opening ceremony is scheduled to precede the start of pool swimming competition on 16 December, followed by competition from 16 December to 21 December and concluding with a closing ceremony on 21 December.[13] A total of 46 events are to be held.[14][15]

H	Heats	SF	Semifinals		Finals

Men

Date →	Thu 16		Fri 17		Sat 18		Sun 19		Mon 20		Tue 21
Event ↓	M	E	M	E	M	E	M	E	M	E	M	E
50 m freestyle					H	SF
100 m freestyle									H	SF
200 m freestyle			H
400 m freestyle	H
1500 m freestyle									H
50 m backstroke					H	SF
100 m backstroke	H	SF
200 m backstroke											H
50 m breaststroke									H	SF
100 m breaststroke	H	SF
200 m breaststroke					H
50 m butterfly							H	SF
100 m butterfly			H	SF
200 m butterfly	H
100 m individual medley					H	SF
200 m individual medley	H
400 m individual medley									H
4 × 50 m freestyle relay							H
4 × 100 m freestyle relay	H
4 × 200 m freestyle relay							H
4 × 50 m medley relay									H
4 × 100 m medley relay											H

Women

Date →	Thu 16		Fri 17		Sat 18		Sun 19		Mon 20		Tue 21
Event ↓	M	E	M	E	M	E	M	E	M	E	M	E
50 m freestyle									H	SF
100 m freestyle			H	SF
200 m freestyle	H
400 m freestyle							H
800 m freestyle			H
50 m backstroke							H	SF
100 m backstroke	H	SF
200 m backstroke					H
50 m breaststroke	H	SF
100 m breaststroke							H	SF
200 m breaststroke											H
50 m butterfly					H	SF
100 m butterfly									H	SF
200 m butterfly			H
100 m individual medley					H	SF
200 m individual medley									H
400 m individual medley	H
4 × 50 m freestyle relay											H
4 × 100 m freestyle relay	H
4 × 200 m freestyle relay									H
4 × 50 m medley relay			H
4 × 100 m medley relay											H

Mixed

Date →	Thu 16		Fri 17		Sat 18		Sun 19		Mon 20		Tue 21
Event ↓	M	E	M	E	M	E	M	E	M	E	M	E
4 × 50 m freestyle relay			H
4 × 50 m medley relay					H

More than 180 countries are providing viewing opportunities through television broadcast and online streaming mediums.[16] One of the broadcasting agencies providing coverage of pool swimming competition internationally is the Olympic Channel.[17][18] Additional international coverage is to be provided by Eurovision Sports.[19]

On 14 December 2021, it was announced that several South African swimmers will not be competing in the championships as many of them are having trouble getting out of the country due to the prevelance of the Omicron variant of COVID-19, which is the World Health Organization’s latest “variant of concern.”[20]

On 16 December 2021, FINA informed the Singapore Swimming Association that its entire squad will not be able to compete in the championships after four of the country's swimmers tested positive for COVID-19 while in Abu Dhabi.[21]

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