# Swimming at the 2020 Summer Olympics – Qualification

For the swimming competitions at the 2020 Summer Olympics, the following qualification systems are in place. As the Olympics was postponed to 2021 due to the COVID-19 pandemic, qualification ends on 27 June 2021.

## Qualifying standards

A National Olympic Committee (NOC) may enter a maximum of two qualified athletes in each individual event, but only if both athletes have attained the Olympic Qualifying Time (OQT). One athlete per event can potentially enter if they meet the Olympic Selection Time (OST) or if the quota of 878 athletes has not been targeted. NOCs may also permit swimmers regardless of time (one per gender) under a Universality place, since they have no swimmers reaching either of the standard entry times (OQT/OST).
In the relay events, a maximum of 16 qualifying teams in each relay event must be permitted to accumulate a total of 112 relay teams; each NOC may enter only one team. The first twelve teams in each relay event at the 2019 World Championships will automatically compete for the relay events at the Olympics; while the remaining four per relay event must obtain their fastest entry times based on the FINA World Rankings during the process.
Because of the exceptional circumstances related to COVID-19 crisis, the consequent Olympic delay, and the unprecedented two-year gap between the Worlds and the new date of the Games, FINA revised the universality rule that allowed a nation to enter the highest-ranked male and female swimmer, respectively, based upon the Points Table (2021 edition). Swimmers from NOCs, having achieved the OST allocated to the universality place, may be entered to a maximum of two individual events, whereas those without the OQT and OST were limited to enter in one individual event only.
Following the end of the qualification period, FINA will assess the number of athletes having achieved the OQT, the number of relay-only swimmers, and the number of Universality places, before inviting athletes with OST to fulfill the total quota of 878. Additionally, OST places will be distributed by event according to the position of the FINA World Rankings during the qualifying deadline.
The qualifying time standards must be obtained in World Championships, Continental Championships, Continental Qualification Events, National Championships and Trials, or International Competitions approved by FINA in the period between 1 March 2019 to 27 June 2021.
The initial FINA qualifying standards, still to be ratified, are as follows:
| Men's events | Men's events | Men's events | Women's events | Women's events | Women's events |
| Event | OQT | OST | Event | OQT | OST |
| 50 m freestyle | 22.01 | 22.67 | 50 m freestyle | 24.77 | 25.51 |
| 100 m freestyle | 48.57 | 50.03 | 100 m freestyle | 54.38 | 56.01 |
| 200 m freestyle | 1:47.02 | 1:50.23 | 200 m freestyle | 1:57.28 | 2:00.80 |
| 400 m freestyle | 3:46.78 | 3:53.58 | 400 m freestyle | 4:07.90 | 4:15.34 |
| 800 m freestyle | 7:54.31 | 8:08.54 | 800 m freestyle | 8:33.36 | 8:48.76 |
| 1500 m freestyle | 15:00.99 | 15:28.02 | 1500 m freestyle | 16:32.04 | 17:01.80 |
| 100 m backstroke | 53.85 | 55.47 | 100 m backstroke | 1:00.25 | 1:02.06 |
| 200 m backstroke | 1:57.50 | 2:01.03 | 200 m backstroke | 2:10.39 | 2:14.30 |
| 100 m breaststroke | 59.93 | 1:01.73 | 100 m breaststroke | 1:07.07 | 1:09.08 |
| 200 m breaststroke | 2:10.35 | 2:14.26 | 200 m breaststroke | 2:25.52 | 2:29.89 |
| 100 m butterfly | 51.96 | 53.52 | 100 m butterfly | 57.92 | 59.66 |
| 200 m butterfly | 1:56.48 | 1:59.97 | 200 m butterfly | 2:08.43 | 2:12.28 |
| 200 m individual medley | 1:59.67 | 2:03.26 | 200 m individual medley | 2:12.56 | 2:16.54 |
| 400 m individual medley | 4:15.84 | 4:21.46 | 400 m individual medley | 4:38.53 | 4:46.89 |

## Individual events

Those who have achieved the Olympic Qualifying Time (OQT) or the Olympic Selection Time (OST), or have been guaranteed a Universality place are listed below for each of the following individual events.

### Men's individual events
#### Men's 50 m freestyle

| Qualification standard | No. of athletes | NOC | Qualified swimmers |
| Olympic Qualifying Time – 22.01 |
| Olympic Qualifying Time – 22.01 | 2 | Canada | Brent Hayden Joshua Liendo |
| Olympic Qualifying Time – 22.01 | 2 | France | Florent Manaudou Maxime Grousset |
| Olympic Qualifying Time – 22.01 | 2 | Italy | Alessandro Miressi Lorenzo Zazzeri |
| Olympic Qualifying Time – 22.01 | 2 | Netherlands | Thom de Boer Jesse Puts |
| Olympic Qualifying Time – 22.01 | 2 | Poland | Konrad Czerniak Paweł Juraszek |
| Olympic Qualifying Time – 22.01 | 2 | ROC | Kliment Kolesnikov Vladimir Morozov |
| Olympic Qualifying Time – 22.01 | 2 | United States | Michael Andrew Caeleb Dressel |
| Olympic Qualifying Time – 22.01 | 1 | Algeria | Oussama Sahnoune |
| Olympic Qualifying Time – 22.01 | 1 | Australia | Cameron McEvoy |
| Olympic Qualifying Time – 22.01 | 1 | Brazil | Bruno Fratus |
| Olympic Qualifying Time – 22.01 | 1 | China | Yu Hexin |
| Olympic Qualifying Time – 22.01 | 1 | Croatia | Nikola Miljenić |
| Olympic Qualifying Time – 22.01 | 1 | Egypt | Ali Khalafalla |
| Olympic Qualifying Time – 22.01 | 1 | Finland | Ari-Pekka Liukkonen |
| Olympic Qualifying Time – 22.01 | 1 | Great Britain | Ben Proud |
| Olympic Qualifying Time – 22.01 | 1 | Greece | Kristian Golomeev |
| Olympic Qualifying Time – 22.01 | 1 | Hong Kong | Ian Ho |
| Olympic Qualifying Time – 22.01 | 1 | Hungary | Maxim Lobanovskij |
| Olympic Qualifying Time – 22.01 | 1 | Israel | Meiron Cheruti |
| Olympic Qualifying Time – 22.01 | 1 | Mexico | Gabriel Castaño |
| Olympic Qualifying Time – 22.01 | 1 | South Africa | Brad Tandy |
| Olympic Qualifying Time – 22.01 | 1 | Sweden | Björn Seeliger |
| Olympic Qualifying Time – 22.01 | 1 | Ukraine | Vladyslav Bukhov |
| Olympic Qualifying Time – 22.01 | 1 | Venezuela | Alberto Mestre |
| Olympic Selection Time – 22.67 | 1 | Argentina | Santiago Grassi |
| Olympic Selection Time – 22.67 | 1 | Austria | Heiko Gigler |
| Olympic Selection Time – 22.67 | 1 | Bosnia and Herzegovina | Emir Muratović |
| Olympic Selection Time – 22.67 | 1 | Cayman Islands | Brett Fraser |
| Olympic Selection Time – 22.67 | 1 | Philippines | Luke Gebbie |
| Olympic Selection Time – 22.67 | 1 | Romania | David Popovici |
| Olympic Selection Time – 22.67 | 1 | Serbia | Andrej Barna |
| Olympic Selection Time – 22.67 | 1 | South Korea | Hwang Sun-woo |
| Olympic Selection Time – 22.67 | 1 | Suriname | Renzo Tjon-A-Joe |
| Olympic Selection Time – 22.67 | 1 | Uruguay | Enzo Martínez |
| Universality Places | 1 | Afghanistan | Fahim Anwari |
| Universality Places | 1 | Armenia | Artur Barseghyan |
| Universality Places | 1 | Bangladesh | Mohammed Ariful Islam |
| Universality Places | 1 | Benin | Marc Dansou |
| Universality Places | 1 | Burkina Faso | Adama Ouedraogo |
| Universality Places | 1 | Cambodia | Hem Puch |
| Universality Places | 1 | Cameroon | Charly Ndjoume |
| Universality Places | 1 | Cape Verde | Troy Pina |
| Universality Places | 1 | Cyprus | Nikolas Antoniou |
| Universality Places | 1 | Djibouti | Hussein Gabor Ibrahim |
| Universality Places | 1 | East Timor | José da Silva Viegas |
| Universality Places | 1 | Equatorial Guinea | Diosdado Miko Eyanga |
| Universality Places | 1 | Eritrea | Ghirmai Efrem |
| Universality Places | 1 | Eswatini | Simanga Dlamini |
| Universality Places | 1 | Gabon | Adam Mpali |
| Universality Places | 1 | The Gambia | Ebrima Buaro |
| Universality Places | 0 | Guinea | Mamadou Bah |
| Universality Places | 1 | Laos | Santisouk Inthavong |
| Universality Places | 1 | Malawi | Filipe Gomes |
| Universality Places | 1 | Marshall Islands | Phillip Kinono |
| Universality Places | 1 | Mongolia | Myagmaryn Delgerkhüü |
| Universality Places | 1 | Palau | Shawn Dingilius-Wallace |
| Universality Places | 1 | Rwanda | Eloi Maniraguha |
| Universality Places | 1 | Saint Vincent and the Grenadines | Shane Cadogan |
| Universality Places | 1 | Sierra Leone | Joshua Wyse |
| Universality Places | 1 | Solomon Islands | Edgar Iro |
| Universality Places | 1 | Tajikistan | Olimjon Ishanov |
| Universality Places | 1 | Togo | Mawupemon Otogbe |
| Universality Places | 1 | Zambia | Shaquille Moosa |
| Invitational Places | 1 | Refugee Olympic Team | Alaa Maso |
| Total | 67 | | |

#### Men's 100 m freestyle

| Qualification standard | No. of athletes | NOC | Qualified swimmers |
| Olympic Qualifying Time – 48.57 | 2 | Australia | Kyle Chalmers Cameron McEvoy |
| Olympic Qualifying Time – 48.57 | 2 | Brazil | Pedro Spajari Gabriel Santos |
| Olympic Qualifying Time – 48.57 | 2 | Canada | Yuri Kisil Joshua Liendo |
| Olympic Qualifying Time – 48.57 | 2 | France | Maxime Grousset Mehdy Metella |
| Olympic Qualifying Time – 48.57 | 2 | Great Britain | Matthew Richards Jacob Whittle |
| Olympic Qualifying Time – 48.57 | 2 | Hungary | Nándor Németh Szebasztián Szabó |
| Olympic Qualifying Time – 48.57 | 2 | Italy | Thomas Ceccon Alessandro Miressi |
| Olympic Qualifying Time – 48.57 | 2 | ROC | Kliment Kolesnikov Andrey Minakov |
| Olympic Qualifying Time – 48.57 | 2 | United States | Zach Apple Caeleb Dressel |
| Olympic Qualifying Time – 48.57 | 1 | Algeria | Oussama Sahnoune |
| Olympic Qualifying Time – 48.57 | 1 | China | He Junyi |
| Olympic Qualifying Time – 48.57 | 1 | Germany | Damian Wierling |
| Olympic Qualifying Time – 48.57 | 1 | Greece | Apostolos Christou |
| Olympic Qualifying Time – 48.57 | 1 | Japan | Katsumi Nakamura |
| Olympic Qualifying Time – 48.57 | 1 | Netherlands | Stan Pijnenburg |
| Olympic Qualifying Time – 48.57 | 1 | Romania | David Popovici |
| Olympic Qualifying Time – 48.57 | 1 | Serbia | Andrej Barna |
| Olympic Qualifying Time – 48.57 | 1 | South Korea | Hwang Sun-woo |
| Olympic Qualifying Time – 48.57 | 1 | Switzerland | Roman Mityukov |
| Olympic Qualifying Time – 48.57 | 1 | Trinidad and Tobago | Dylan Carter |
| Olympic Qualifying Time – 48.57 | 1 | Ukraine | Sergii Shevtsov |
| Olympic Selection Time – 50.03 | 1 | Armenia | Artur Barseghyan |
| Olympic Selection Time – 50.03 | 1 | Aruba | Mikel Schreuders |
| Olympic Selection Time – 50.03 | 1 | Bosnia and Herzegovina | Emir Muratović |
| Olympic Selection Time – 50.03 | 1 | Bulgaria | Josif Miladinov |
| Olympic Selection Time – 50.03 | 1 | Croatia | Nikola Miljenić |
| Olympic Selection Time – 50.03 | 1 | Cyprus | Nikolas Antoniou |
| Olympic Selection Time – 50.03 | 1 | Finland | Ari-Pekka Liukkonen |
| Olympic Selection Time – 50.03 | 1 | Hong Kong | Ian Ho |
| Olympic Selection Time – 50.03 | 1 | Israel | Meiron Cheruti |
| Olympic Selection Time – 50.03 | 1 | Paraguay | Ben Hockin |
| Olympic Selection Time – 50.03 | 1 | Philippines | Luke Gebbie |
| Olympic Selection Time – 50.03 | 1 | Singapore | Joseph Schooling |
| Olympic Selection Time – 50.03 | 1 | Suriname | Renzo Tjon-A-Joe |
| Olympic Selection Time – 50.03 | 1 | Venezuela | Alberto Mestre |
| Universality Places | 1 | Albania | Kledi Kadiu |
| Universality Places | 1 | Antigua and Barbuda | Stefano Mitchell |
| Universality Places | 1 | Bhutan | Sangay Tenzin |
| Universality Places | 1 | Burundi | Belly-Cresus Ganira |
| Universality Places | 1 | Grenada | Delron Felix |
| Universality Places | 1 | Guam | Jagger Stephens |
| Universality Places | 1 | Guyana | Andrew Fowler |
| Universality Places | 1 | Kenya | Danilo Rosafio |
| Universality Places | 1 | Kosovo | Olt Kondirolli |
| Universality Places | 1 | Maldives | Mubal Ibrahim |
| Universality Places | 1 | Malta | Andrew Chetcuti |
| Universality Places | 1 | Mauritius | Mathieu Marquet |
| Universality Places | 1 | Montenegro | Boško Radulović |
| Universality Places | 1 | Morocco | Samy Boutouil |
| Universality Places | 1 | Nepal | Alexander Shah |
| Universality Places | 1 | Nicaragua | Miguel Mena |
| Universality Places | 1 | Niger | Alassane Seydou |
| Universality Places | 1 | Oman | Issa Al-Adawi |
| Universality Places | 1 | Pakistan | Muhammad Haseeb Tariq |
| Universality Places | 1 | Palestine | Yazan Al-Bawwab |
| Universality Places | 1 | Saint Lucia | Jean-Luc Zephir |
| Universality Places | 1 | Solomon Islands | Edgar Iro |
| Universality Places | 1 | Sri Lanka | Matthew Abeysinghe |
| Universality Places | 1 | Uganda | Atuhaire Ambala |
| Universality Places | 1 | United Arab Emirates | Yousuf Al-Matrooshi |
| Universality Places | 1 | Uzbekistan | Khurshidjon Tursunov |
| Universality Places | 1 | Yemen | Mokhtar Al-Yamani |
| Universality Places | 1 | Zimbabwe | Peter Wetzlar |
| Total | 72 | | |

#### Men's 200 m freestyle

| Qualification standard | No. of athletes | NOC | Qualified swimmers |
| Olympic Qualifying Time – 1:47.02 | 2 | Australia | Thomas Neill Elijah Winnington |
| Olympic Qualifying Time – 1:47.02 | 2 | Brazil | Murilo Sartori Fernando Scheffer |
| Olympic Qualifying Time – 1:47.02 | 2 | China | Ji Xinjie Wang Shun |
| Olympic Qualifying Time – 1:47.02 | 2 | France | Jonathan Atsu Jordan Pothain |
| Olympic Qualifying Time – 1:47.02 | 2 | Germany | Jacob Heidtmann Lukas Märtens |
| Olympic Qualifying Time – 1:47.02 | 2 | Great Britain | Tom Dean Duncan Scott |
| Olympic Qualifying Time – 1:47.02 | 2 | Hungary | Dominik Kozma Nándor Németh |
| Olympic Qualifying Time – 1:47.02 | 2 | Italy | Stefano Ballo Stefano Di Cola |
| Olympic Qualifying Time – 1:47.02 | 2 | ROC | Ivan Girev Martin Malyutin |
| Olympic Qualifying Time – 1:47.02 | 2 | United States | Townley Haas Kieran Smith |
| Olympic Qualifying Time – 1:47.02 | 1 | Austria | Felix Auböck |
| Olympic Qualifying Time – 1:47.02 | 1 | Estonia | Kregor Zirk |
| Olympic Qualifying Time – 1:47.02 | 1 | Israel | Denis Loktev |
| Olympic Qualifying Time – 1:47.02 | 1 | Japan | Katsuhiro Matsumoto |
| Olympic Qualifying Time – 1:47.02 | 1 | Lithuania | Danas Rapšys |
| Olympic Qualifying Time – 1:47.02 | 1 | Serbia | Velimir Stjepanović |
| Olympic Qualifying Time – 1:47.02 | 1 | South Korea | Hwang Sun-woo |
| Olympic Qualifying Time – 1:47.02 | 1 | Sweden | Robin Hanson |
| Olympic Qualifying Time – 1:47.02 | 1 | Switzerland | Antonio Djakovic |
| Olympic Selection Time – 1:50.23 | 1 | Aruba | Mikel Schreuders |
| Olympic Selection Time – 1:50.23 | 1 | Barbados | Alex Sobers |
| Olympic Selection Time – 1:50.23 | 1 | Cook Islands | Wesley Roberts |
| Olympic Selection Time – 1:50.23 | 1 | Greece | Dimitrios Markos |
| Olympic Selection Time – 1:50.23 | 1 | India | Sajan Prakash |
| Olympic Selection Time – 1:50.23 | 1 | Malaysia | Welson Sim |
| Olympic Selection Time – 1:50.23 | 1 | Moldova | Alexei Sancov |
| Olympic Selection Time – 1:50.23 | 1 | Peru | Joaquín Vargas |
| Olympic Selection Time – 1:50.23 | 1 | Romania | David Popovici |
| Olympic Selection Time – 1:50.23 | 1 | Turkey | Baturalp Ünlü |
| Olympic Selection Time – 1:50.23 | 1 | Yemen | Mokhtar Al-Yamani |
| Universality Places | 1 | Botswana | James Freeman |
| Universality Places | 1 | Libya | Audai Hassouna |
| Total | 44 | | |

#### Men's 400 m freestyle

| Qualification standard | No. of athletes | NOC | Qualified swimmers |
| Olympic Qualifying Time – 3:46.78 | 2 | Australia | Jack McLoughlin Elijah Winnington |
| Olympic Qualifying Time – 3:46.78 | 2 | Germany | Lukas Märtens Henning Mühlleitner |
| Olympic Qualifying Time – 3:46.78 | 2 | Italy | Marco De Tullio Gabriele Detti |
| Olympic Qualifying Time – 3:46.78 | 2 | ROC | Martin Malyutin Aleksandr Yegorov |
| Olympic Qualifying Time – 3:46.78 | 2 | United States | Jake Mitchell Kieran Smith |
| Olympic Qualifying Time – 3:46.78 | 1 | Austria | Felix Auböck |
| Olympic Qualifying Time – 3:46.78 | 1 | Brazil | Guilherme Costa |
| Olympic Qualifying Time – 3:46.78 | 1 | China | Ji Xinjie |
| Olympic Qualifying Time – 3:46.78 | 1 | Great Britain | Kieran Bird |
| Olympic Qualifying Time – 3:46.78 | 1 | Hungary | Gábor Zombori |
| Olympic Qualifying Time – 3:46.78 | 1 | Lithuania | Danas Rapšys |
| Olympic Qualifying Time – 3:46.78 | 1 | Switzerland | Antonio Djakovic |
| Olympic Qualifying Time – 3:46.78 | 1 | Tunisia | Ahmed Hafnaoui |
| Olympic Selection Time – 3:53.58 | 1 | Barbados | Alex Sobers |
| Olympic Selection Time – 3:53.58 | 1 | Botswana | James Freeman |
| Olympic Selection Time – 3:53.58 | 1 | Cook Islands | Wesley Roberts |
| Olympic Selection Time – 3:53.58 | 1 | Estonia | Kregor Zirk |
| Olympic Selection Time – 3:53.58 | 1 | France | David Aubry |
| Olympic Selection Time – 3:53.58 | 1 | Greece | Konstantinos Englezakis |
| Olympic Selection Time – 3:53.58 | 1 | Indonesia | Aflah Fadlan Prawira |
| Olympic Selection Time – 3:53.58 | 1 | Israel | Denis Loktev |
| Olympic Selection Time – 3:53.58 | 1 | Malaysia | Welson Sim |
| Olympic Selection Time – 3:53.58 | 1 | New Zealand | Zac Reid |
| Olympic Selection Time – 3:53.58 | 1 | Norway | Henrik Christiansen |
| Olympic Selection Time – 3:53.58 | 1 | Peru | Joaquín Vargas |
| Olympic Selection Time – 3:53.58 | 1 | Slovenia | Martin Bau |
| Olympic Selection Time – 3:53.58 | 1 | South Korea | Lee Ho-joon |
| Olympic Selection Time – 3:53.58 | 1 | Venezuela | Alfonso Mestre |
| Universality Places | 1 | Chile | Eduardo Cisternas |
| Universality Places | 1 | Georgia | Irakli Revishvili |
| Universality Places | 1 | Mozambique | Igor Mogne |
| Universality Places | 1 | North Macedonia | Filip Derkoski |
| Total | 36 | | |

#### Men's 800 m freestyle

| Qualification standard | No. of athletes | NOC | Qualified swimmers |
| Olympic Qualifying Time – 7:54.31 | 2 | Denmark | Anton Ørskov Ipsen Alexander Nørgaard |
| Olympic Qualifying Time – 7:54.31 | 2 | Greece | Dimitrios Markos Konstantinos Englezakis |
| Olympic Qualifying Time – 7:54.31 | 2 | Italy | Gabriele Detti Gregorio Paltrinieri |
| Olympic Qualifying Time – 7:54.31 | 2 | ROC | Ilya Druzhinin Aleksandr Yegorov |
| Olympic Qualifying Time – 7:54.31 | 2 | Ukraine | Serhiy Frolov Mykhailo Romanchuk |
| Olympic Qualifying Time – 7:54.31 | 2 | United States | Michael Brinegar Bobby Finke |
| Olympic Qualifying Time – 7:54.31 | 1 | Australia | Jack McLoughlin |
| Olympic Qualifying Time – 7:54.31 | 1 | Austria | Felix Auböck |
| Olympic Qualifying Time – 7:54.31 | 1 | Brazil | Guilherme Costa |
| Olympic Qualifying Time – 7:54.31 | 1 | China | Cheng Long |
| Olympic Qualifying Time – 7:54.31 | 1 | Czech Republic | Jan Micka |
| Olympic Qualifying Time – 7:54.31 | 1 | Egypt | Marwan El-Kamash |
| Olympic Qualifying Time – 7:54.31 | 1 | France | David Aubry |
| Olympic Qualifying Time – 7:54.31 | 1 | Germany | Florian Wellbrock |
| Olympic Qualifying Time – 7:54.31 | 1 | Great Britain | Kieran Bird |
| Olympic Qualifying Time – 7:54.31 | 1 | Ireland | Daniel Wiffen |
| Olympic Qualifying Time – 7:54.31 | 1 | New Zealand | Zac Reid |
| Olympic Qualifying Time – 7:54.31 | 1 | Norway | Henrik Christiansen |
| Olympic Qualifying Time – 7:54.31 | 1 | Portugal | José Paulo Lopes |
| Olympic Qualifying Time – 7:54.31 | 1 | Serbia | Vuk Čelić |
| Olympic Qualifying Time – 7:54.31 | 1 | Tunisia | Ahmed Hafnaoui |
| Olympic Qualifying Time – 7:54.31 | 1 | Turkey | Yiğit Aslan |
| Olympic Qualifying Time – 7:54.31 | 1 | Venezuela | Alfonso Mestre |
| Olympic Qualifying Time – 7:54.31 | 1 | Vietnam | Nguyễn Huy Hoàng |
| Olympic Selection Time – 8:08.54 | 1 | El Salvador | Marcelo Acosta |
| Olympic Selection Time – 8:08.54 | 1 | Hungary | Ákos Kalmár |
| Olympic Selection Time – 8:08.54 | 1 | Slovenia | Martin Bau |
| Olympic Selection Time – 8:08.54 | 1 | Sweden | Victor Johansson |
| Total | 34 | | |

#### Men's 1500 m freestyle

| Qualification standard | No. of athletes | NOC | Qualified swimmers |
| Olympic Qualifying Time – 15:00.99 |
| Olympic Qualifying Time – 15:00.99 | 2 | Australia | Jack McLoughlin Thomas Neill |
| Olympic Qualifying Time – 15:00.99 | 2 | Denmark | Anton Ørskov Ipsen Alexander Nørgaard |
| Olympic Qualifying Time – 15:00.99 | 2 | Germany | Lukas Märtens Florian Wellbrock |
| Olympic Qualifying Time – 15:00.99 | 2 | Hungary | Gergely Gyurta Ákos Kalmár |
| Olympic Qualifying Time – 15:00.99 | 2 | Italy | Domenico Acerenza Gregorio Paltrinieri |
| Olympic Qualifying Time – 15:00.99 | 2 | ROC | Kirill Martynychev Aleksandr Yegorov |
| Olympic Qualifying Time – 15:00.99 | 2 | Ukraine | Serhiy Frolov Mykhailo Romanchuk |
| Olympic Qualifying Time – 15:00.99 | 2 | United States | Michael Brinegar Bobby Finke |
| Olympic Qualifying Time – 15:00.99 | 1 | Brazil | Guilherme Costa |
| Olympic Qualifying Time – 15:00.99 | 1 | Czech Republic | Jan Micka |
| Olympic Qualifying Time – 15:00.99 | 1 | Great Britain | Daniel Jervis |
| Olympic Qualifying Time – 15:00.99 | 1 | Norway | Henrik Christiansen |
| Olympic Qualifying Time – 15:00.99 | 1 | Vietnam | Nguyễn Huy Hoàng |
| Olympic Selection Time – 15:28.02 | 1 | Austria | Felix Auböck |
| Olympic Selection Time – 15:28.02 | 1 | China | Cheng Long |
| Olympic Selection Time – 15:28.02 | 1 | El Salvador | Marcelo Acosta |
| Olympic Selection Time – 15:28.02 | 1 | Indonesia | Aflah Fadlan Prawira |
| Olympic Selection Time – 15:28.02 | 1 | Ireland | Daniel Wiffen |
| Olympic Selection Time – 15:28.02 | 1 | Sweden | Victor Johansson |
| Universality Places | 1 | Monaco | Theo Druenne |
| Total | 29 | | |

#### Men's 100 m backstroke

| Qualification standard | No. of athletes | NOC | Qualified swimmers |
| Olympic Qualifying Time – 53.85 | 2 | Australia | Isaac Cooper Mitch Larkin |
| Olympic Qualifying Time – 53.85 | 2 | Brazil | Guilherme Basseto Guilherme Guido |
| Olympic Qualifying Time – 53.85 | 2 | Canada | Cole Pratt Markus Thormeyer |
| Olympic Qualifying Time – 53.85 | 2 | France | Yohann Ndoye-Brouard Mewen Tomac |
| Olympic Qualifying Time – 53.85 | 2 | Germany | Ole Braunschweig Marek Ulrich |
| Olympic Qualifying Time – 53.85 | 2 | Great Britain | Luke Greenbank Joe Litchfield |
| Olympic Qualifying Time – 53.85 | 2 | Hungary | Richárd Bohus Ádám Telegdy |
| Olympic Qualifying Time – 53.85 | 2 | Israel | Michael Laitarovsky Yakov Toumarkin |
| Olympic Qualifying Time – 53.85 | 2 | Italy | Thomas Ceccon Simone Sabbioni |
| Olympic Qualifying Time – 53.85 | 2 | Romania | Robert Glință Daniel Martin |
| Olympic Qualifying Time – 53.85 | 2 | ROC | Kliment Kolesnikov Evgeny Rylov |
| Olympic Qualifying Time – 53.85 | 2 | United States | Hunter Armstrong Ryan Murphy |
| Olympic Qualifying Time – 53.85 | 1 | Austria | Bernhard Reitshammer |
| Olympic Qualifying Time – 53.85 | 1 | Belarus | Mikita Tsmyh |
| Olympic Qualifying Time – 53.85 | 1 | China | Xu Jiayu |
| Olympic Qualifying Time – 53.85 | 1 | Greece | Apostolos Christou |
| Olympic Qualifying Time – 53.85 | 1 | India | Srihari Nataraj |
| Olympic Qualifying Time – 53.85 | 1 | Ireland | Shane Ryan |
| Olympic Qualifying Time – 53.85 | 1 | Japan | Ryosuke Irie |
| Olympic Qualifying Time – 53.85 | 1 | Singapore | Quah Zheng Wen |
| Olympic Qualifying Time – 53.85 | 1 | South Africa | Pieter Coetze |
| Olympic Qualifying Time – 53.85 | 1 | South Korea | Lee Ju-ho |
| Olympic Qualifying Time – 53.85 | 1 | Spain | Hugo González |
| Olympic Selection Time – 55.47 | 1 | Bulgaria | Kaloyan Levterov |
| Olympic Selection Time – 55.47 | 1 | Czech Republic | Jan Čejka |
| Olympic Selection Time – 55.47 | 1 | Poland | Kacper Stokowski |
| Olympic Selection Time – 55.47 | 1 | Portugal | Francisco Santos |
| Olympic Selection Time – 55.47 | 1 | Trinidad and Tobago | Dylan Carter |
| Olympic Selection Time – 55.47 | 1 | Turkmenistan | Merdan Ataýew |
| Universality Places | 1 | Bolivia | Gabriel Castillo |
| Universality Places | 1 | Madagascar | Heriniavo Rasolonjatovo |
| Total | 41 | | |

#### Men's 200 m backstroke

| Qualification standard | No. of athletes | NOC | Qualified swimmers |
| Olympic Qualifying Time – 1:57.50 | 2 | France | Yohann Ndoye-Brouard Mewen Tomac |
| Olympic Qualifying Time – 1:57.50 | 2 | Great Britain | Luke Greenbank Brodie Williams |
| Olympic Qualifying Time – 1:57.50 | 2 | Japan | Ryosuke Irie Keita Sunama |
| Olympic Qualifying Time – 1:57.50 | 2 | Poland | Radosław Kawęcki Jakub Skierka |
| Olympic Qualifying Time – 1:57.50 | 2 | ROC | Evgeny Rylov Grigory Tarasevich |
| Olympic Qualifying Time – 1:57.50 | 2 | United States | Bryce Mefford Ryan Murphy |
| Olympic Qualifying Time – 1:57.50 | 1 | Australia | Tristan Hollard |
| Olympic Qualifying Time – 1:57.50 | 1 | Bulgaria | Kaloyan Levterov |
| Olympic Qualifying Time – 1:57.50 | 1 | Canada | Markus Thormeyer |
| Olympic Qualifying Time – 1:57.50 | 1 | China | Xu Jiayu |
| Olympic Qualifying Time – 1:57.50 | 1 | Czech Republic | Jan Čejka |
| Olympic Qualifying Time – 1:57.50 | 1 | Germany | Christian Diener |
| Olympic Qualifying Time – 1:57.50 | 1 | Hungary | Ádám Telegdy |
| Olympic Qualifying Time – 1:57.50 | 1 | Italy | Matteo Restivo |
| Olympic Qualifying Time – 1:57.50 | 1 | Portugal | Francisco Santos |
| Olympic Qualifying Time – 1:57.50 | 1 | South Korea | Lee Ju-ho |
| Olympic Qualifying Time – 1:57.50 | 1 | Spain | Nicolás García |
| Olympic Qualifying Time – 1:57.50 | 1 | Switzerland | Roman Mityukov |
| Olympic Qualifying Time – 1:57.50 | 1 | Turkey | Berke Saka |
| Olympic Selection Time – 2:01.03 | 1 | Israel | Yakov Toumarkin |
| Olympic Selection Time – 2:01.03 | 1 | Romania | Robert Glință |
| Olympic Selection Time – 2:01.03 | 1 | South Africa | Martin Binedell |
| Universality Places | 1 | Turkmenistan | Merdan Ataýew |
| Total | 29 | | |

#### Men's 100 m breaststroke

| Qualification standard | No. of athletes | NOC | Qualified swimmers |
| Olympic Qualifying Time – 59.93 | 2 | Australia | Zac Stubblety-Cook Matthew Wilson |
| Olympic Qualifying Time – 59.93 | 2 | Brazil | Felipe Lima Caio Pumputis |
| Olympic Qualifying Time – 59.93 | 2 | Great Britain | Adam Peaty James Wilby |
| Olympic Qualifying Time – 59.93 | 2 | Germany | Lucas Matzerath Fabian Schwingenschlögl |
| Olympic Qualifying Time – 59.93 | 2 | Italy | Nicolò Martinenghi Federico Poggio |
| Olympic Qualifying Time – 59.93 | 2 | Japan | Ryuya Mura Shoma Sato |
| Olympic Qualifying Time – 59.93 | 2 | Lithuania | Andrius Šidlauskas Giedrius Titenis |
| Olympic Qualifying Time – 59.93 | 2 | Netherlands | Caspar Corbeau Arno Kamminga |
| Olympic Qualifying Time – 59.93 | 2 | ROC | Anton Chupkov Kirill Prigoda |
| Olympic Qualifying Time – 59.93 | 2 | Turkey | Berkay Ömer Öğretir Hüseyin Emre Sakçı |
| Olympic Qualifying Time – 59.93 | 2 | United States | Michael Andrew Andrew Wilson |
| Olympic Qualifying Time – 59.93 | 1 | Austria | Bernhard Reitshammer |
| Olympic Qualifying Time – 59.93 | 1 | Belarus | Ilya Shymanovich |
| Olympic Qualifying Time – 59.93 | 1 | China | Yan Zibei |
| Olympic Qualifying Time – 59.93 | 1 | Denmark | Tobias Bjerg |
| Olympic Qualifying Time – 59.93 | 1 | France | Théo Bussière |
| Olympic Qualifying Time – 59.93 | 1 | Ireland | Darragh Greene |
| Olympic Qualifying Time – 59.93 | 1 | Kazakhstan | Dmitriy Balandin |
| Olympic Qualifying Time – 59.93 | 1 | Kyrgyzstan | Denis Petrashov |
| Olympic Qualifying Time – 59.93 | 1 | Serbia | Čaba Silađi |
| Olympic Qualifying Time – 59.93 | 1 | South Africa | Michael Houlie |
| Olympic Qualifying Time – 59.93 | 1 | South Korea | Cho Sung-jae |
| Olympic Selection Time – 1:01.73 | 1 | Bahamas | Izaak Bastian |
| Olympic Selection Time – 1:01.73 | 1 | Bulgaria | Lyubomir Epitropov |
| Olympic Selection Time – 1:01.73 | 1 | Canada | Gabe Mastromatteo |
| Olympic Selection Time – 1:01.73 | 1 | Colombia | Jorge Murillo |
| Olympic Selection Time – 1:01.73 | 1 | Dominican Republic | Josué Domínguez |
| Olympic Selection Time – 1:01.73 | 1 | Finland | Matti Mattsson |
| Olympic Selection Time – 1:01.73 | 1 | Honduras | Julio Horrego |
| Olympic Selection Time – 1:01.73 | 1 | Norway | André Grindheim |
| Olympic Selection Time – 1:01.73 | 1 | Sweden | Erik Persson |
| Olympic Selection Time – 1:01.73 | 1 | Switzerland | Jérémy Desplanches |
| Universality Places | 1 | American Samoa | Micah Masei |
| Universality Places | 1 | Brunei | Muhammad Isa Ahmad |
| Universality Places | 1 | Jordan | Amro Al-Wir |
| Universality Places | 1 | Mali | Sebastien Kouma |
| Universality Places | 1 | Sudan | Abobakr Abass |
| Universality Places | 1 | Tonga | Amini Fonua |
| Universality Places | 1 | Virgin Islands | Adriel Sanes |
| Total | 50 | | |

#### Men's 200 m breaststroke

| Qualification standard | No. of athletes | NOC | Qualified swimmers |
| Olympic Qualifying Time – 2:10.35 | 2 | Australia | Zac Stubblety-Cook Matthew Wilson |
| 2 | Great Britain | Ross Murdoch James Wilby |
| 2 | Japan | Ryuya Mura Shoma Sato |
| 2 | Netherlands | Caspar Corbeau Arno Kamminga |
| 2 | ROC | Anton Chupkov Kirill Prigoda |
| 2 | United States | Nic Fink Andrew Wilson |
| 1 | Austria | Christopher Rothbauer |
| 1 | Bulgaria | Lyubomir Epitropov |
| 1 | China | Qin Haiyang |
| 1 | Finland | Matti Mattsson |
| 1 | France | Antoine Viquerat |
| 1 | Germany | Marco Koch |
| 1 | Iceland | Anton Sveinn McKee |
| 1 | Ireland | Darragh Greene |
| 1 | Kazakhstan | Dmitriy Balandin |
| 1 | Lithuania | Andrius Šidlauskas |
| 1 | South Korea | Cho Sung-jae |
| 1 | Sweden | Erik Persson |
| 1 | Turkey | Berkay Ömer Öğretir |
| Olympic Selection Time – 2:14.26 | 1 | Colombia | Jorge Murillo |
| Olympic Selection Time – 2:14.26 | 1 | Estonia | Martin Allikvee |
| Olympic Selection Time – 2:14.26 | 1 | Israel | Ron Polonsky |
| Olympic Selection Time – 2:14.26 | 1 | Jordan | Amro Al-Wir |
| Olympic Selection Time – 2:14.26 | 1 | Kyrgyzstan | Denis Petrashov |
| Olympic Selection Time – 2:14.26 | 1 | Virgin Islands | Adriel Sanes |
| Universality Places | 1 | Bahamas | Izaak Bastian |
| Universality Places | 1 | Costa Rica | Arnoldo Herrera |
| Universality Places | 1 | Dominican Republic | Josué Domínguez |
| Universality Places | 1 | Fiji | Taichi Vakasama |
| Universality Places | 1 | Honduras | Julio Horrego |
| Universality Places | 1 | Latvia | Daniils Bobrovs |
| Universality Places | 1 | Panama | Tyler Christianson |
| Universality Places | 1 | Papua New Guinea | Ryan Maskelyne |
| Universality Places | 1 | Qatar | Abdulaziz Al-Obaidly |
| Total | 39 | | |

#### Men's 100 m butterfly

| Qualification standard | No. of athletes | NOC | Qualified swimmers |
| Olympic Qualifying Time – 51.96 | 2 | Australia | David Morgan Matthew Temple |
| Olympic Qualifying Time – 51.96 | 2 | Brazil | Matheus Gonche Vinicius Lanza |
| Olympic Qualifying Time – 51.96 | 2 | Bulgaria | Antani Ivanov Josif Miladinov |
| Olympic Qualifying Time – 51.96 | 2 | Great Britain | James Guy Jacob Peters |
| Olympic Qualifying Time – 51.96 | 2 | Hungary | Kristóf Milák Szebasztián Szabó |
| Olympic Qualifying Time – 51.96 | 2 | Israel | Tomer Frankel Gal Cohen Groumi |
| Olympic Qualifying Time – 51.96 | 2 | Italy | Federico Burdisso Santo Condorelli |
| Olympic Qualifying Time – 51.96 | 2 | Japan | Takeshi Kawamoto Naoki Mizunuma |
| Olympic Qualifying Time – 51.96 | 2 | Poland | Paweł Korzeniowski Jakub Majerski |
| Olympic Qualifying Time – 51.96 | 2 | ROC | Andrey Minakov Mikhail Vekovishchev |
| Olympic Qualifying Time – 51.96 | 2 | Singapore | Quah Zheng Wen Joseph Schooling |
| Olympic Qualifying Time – 51.96 | 2 | South Africa | Chad le Clos Matthew Sates |
| Olympic Qualifying Time – 51.96 | 2 | United States | Caeleb Dressel Tom Shields |
| Olympic Qualifying Time – 51.96 | 1 | Argentina | Santiago Grassi |
| Olympic Qualifying Time – 51.96 | 1 | Austria | Simon Bucher |
| Olympic Qualifying Time – 51.96 | 1 | Belarus | Yauhen Tsurkin |
| Olympic Qualifying Time – 51.96 | 1 | Canada | Joshua Liendo |
| Olympic Qualifying Time – 51.96 | 1 | China | Sun Jiajun |
| Olympic Qualifying Time – 51.96 | 1 | Czech Republic | Jan Šefl |
| Olympic Qualifying Time – 51.96 | 1 | Egypt | Youssef Ramadan |
| Olympic Qualifying Time – 51.96 | 1 | France | Mehdy Metella |
| Olympic Qualifying Time – 51.96 | 1 | Germany | Marius Kusch |
| Olympic Qualifying Time – 51.96 | 1 | Guatemala | Luis Martínez |
| Olympic Qualifying Time – 51.96 | 1 | Netherlands | Nyls Korstanje |
| Olympic Qualifying Time – 51.96 | 1 | Switzerland | Noè Ponti |
| Olympic Qualifying Time – 51.96 | 1 | Turkey | Ümitcan Güreş |
| Olympic Selection Time – 53.52 | 1 | Belgium | Louis Croenen |
| Olympic Selection Time – 53.52 | 1 | Croatia | Nikola Miljenić |
| Olympic Selection Time – 53.52 | 1 | Estonia | Kregor Zirk |
| Olympic Selection Time – 53.52 | 1 | India | Sajan Prakash |
| Olympic Selection Time – 53.52 | 1 | Ireland | Shane Ryan |
| Olympic Selection Time – 53.52 | 1 | Kuwait | Abbas Qali |
| Olympic Selection Time – 53.52 | 1 | Norway | Tomoe Zenimoto Hvas |
| Olympic Selection Time – 53.52 | 1 | Paraguay | Ben Hockin |
| Olympic Selection Time – 53.52 | 1 | Romania | Daniel Martin |
| Olympic Selection Time – 53.52 | 1 | South Korea | Moon Seung-woo |
| Olympic Selection Time – 53.52 | 1 | Chinese Taipei | Wang Kuan-hung |
| Olympic Selection Time – 53.52 | 1 | Trinidad and Tobago | Dylan Carter |
| Olympic Selection Time – 53.52 | 1 | Ukraine | Ihor Troianovskyi |
| Universality Places | 1 | Angola | Salvador Gordo |
| Universality Places | 1 | Bahrain | Abdulla Ahmed |
| Universality Places | 1 | Ghana | Abeku Jackson |
| Universality Places | 1 | Haiti | Davidson Vincent |
| Universality Places | 1 | Saudi Arabia | Yousif Bu Arish |
| Universality Places | 1 | Senegal | Steven Aimable |
| Universality Places | 1 | Thailand | Navaphat Wongcharoen |
| Total | 59 | | |

#### Men's 200 m butterfly

| Qualification standard | No. of athletes | NOC | Qualified swimmers |
| Olympic Qualifying Time – 1:56.48 | 2 | Australia | David Morgan Matthew Temple |
| Olympic Qualifying Time – 1:56.48 | 2 | Hungary | Tamás Kenderesi Kristóf Milák |
| Olympic Qualifying Time – 1:56.48 | 2 | Italy | Federico Burdisso Giacomo Carini |
| Olympic Qualifying Time – 1:56.48 | 2 | Japan | Tomoru Honda Daiya Seto |
| Olympic Qualifying Time – 1:56.48 | 2 | Poland | Krzysztof Chmielewski Jakub Majerski |
| Olympic Qualifying Time – 1:56.48 | 2 | South Africa | Ethan du Preez Chad le Clos |
| Olympic Qualifying Time – 1:56.48 | 2 | Ukraine | Denys Kesil Ihor Troianovskyi |
| Olympic Qualifying Time – 1:56.48 | 2 | United States | Gunnar Bentz Zach Harting |
| Olympic Qualifying Time – 1:56.48 | 1 | Belgium | Louis Croenen |
| Olympic Qualifying Time – 1:56.48 | 1 | Brazil | Leonardo de Deus |
| Olympic Qualifying Time – 1:56.48 | 1 | Bulgaria | Antani Ivanov |
| Olympic Qualifying Time – 1:56.48 | 1 | France | Léon Marchand |
| Olympic Qualifying Time – 1:56.48 | 1 | Germany | David Thomasberger |
| Olympic Qualifying Time – 1:56.48 | 1 | India | Sajan Prakash |
| Olympic Qualifying Time – 1:56.48 | 1 | South Korea | Moon Seung-woo |
| Olympic Qualifying Time – 1:56.48 | 1 | Switzerland | Noè Ponti |
| Olympic Qualifying Time – 1:56.48 | 1 | Chinese Taipei | Wang Kuan-hung |
| Olympic Selection Time – 1:59.97 | 1 | Cuba | Luis Vega Torres |
| Olympic Selection Time – 1:59.97 | 1 | Estonia | Kregor Zirk |
| Olympic Selection Time – 1:59.97 | 1 | Ireland | Brendan Hyland |
| Olympic Selection Time – 1:59.97 | 1 | Moldova | Alexei Sancov |
| Olympic Selection Time – 1:59.97 | 1 | Norway | Tomoe Zenimoto Hvas |
| Olympic Selection Time – 1:59.97 | 1 | Singapore | Quah Zheng Wen |
| Olympic Selection Time – 1:59.97 | 1 | Slovakia | Richard Nagy |
| Olympic Selection Time – 1:59.97 | 1 | Thailand | Navaphat Wongcharoen |
| Universality Places | 1 | Iran | Matin Balsini |
| Universality Places | 1 | Jamaica | Keanan Dols |
| Universality Places | 1 | Seychelles | Simon Bachmann |
| Universality Places | 1 | Syria | Ayman Kelzi |
| Total | 37 | | |

#### Men's 200 m individual medley

| Qualification standard | No. of athletes | NOC | Qualified swimmers |
| Olympic Qualifying Time – 1:59.67 | 2 | Australia | Mitch Larkin Brendon Smith |
| Olympic Qualifying Time – 1:59.67 | 2 | Brazil | Caio Pumputis Vinicius Lanza |
| Olympic Qualifying Time – 1:59.67 | 2 | China | Wang Shun Qin Haiyang |
| Olympic Qualifying Time – 1:59.67 | 2 | Germany | Jacob Heidtmann Philip Heintz |
| Olympic Qualifying Time – 1:59.67 | 2 | Great Britain | Joe Litchfield Duncan Scott |
| Olympic Qualifying Time – 1:59.67 | 2 | Greece | Apostolos Papastamos Andreas Vazaios |
| Olympic Qualifying Time – 1:59.67 | 2 | Hungary | László Cseh Hubert Kós |
| Olympic Qualifying Time – 1:59.67 | 2 | Israel | Gal Cohen Groumi Ron Polonsky |
| Olympic Qualifying Time – 1:59.67 | 2 | Japan | Kosuke Hagino Daiya Seto |
| Olympic Qualifying Time – 1:59.67 | 2 | Portugal | Gabriel Lópes Alexis Santos |
| Olympic Qualifying Time – 1:59.67 | 2 | ROC | Ilya Borodin Andrey Zhilkin |
| Olympic Qualifying Time – 1:59.67 | 2 | United States | Michael Andrew Chase Kalisz |
| Olympic Qualifying Time – 1:59.67 | 1 | Austria | Bernhard Reitshammer |
| Olympic Qualifying Time – 1:59.67 | 1 | Canada | Finlay Knox |
| Olympic Qualifying Time – 1:59.67 | 1 | France | Léon Marchand |
| Olympic Qualifying Time – 1:59.67 | 1 | Italy | Alberto Razzetti |
| Olympic Qualifying Time – 1:59.67 | 1 | Lithuania | Danas Rapšys |
| Olympic Qualifying Time – 1:59.67 | 1 | Luxembourg | Raphaël Stacchiotti |
| Olympic Qualifying Time – 1:59.67 | 1 | New Zealand | Lewis Clareburt |
| Olympic Qualifying Time – 1:59.67 | 1 | Norway | Tomoe Zenimoto Hvas |
| Olympic Qualifying Time – 1:59.67 | 1 | South Africa | Matthew Sates |
| Olympic Qualifying Time – 1:59.67 | 1 | Spain | Hugo González |
| Olympic Qualifying Time – 1:59.67 | 1 | Switzerland | Jérémy Desplanches |
| Olympic Qualifying Time – 1:59.67 | 1 | Chinese Taipei | Wang Hsing-hao |
| Olympic Selection Time – 2:03.26 | 1 | Ecuador | Tomas Peribonio |
| Olympic Selection Time – 2:03.26 | 1 | Jamaica | Keanan Dols |
| Olympic Selection Time – 2:03.26 | 1 | Liechtenstein | Christoph Meier |
| Olympic Selection Time – 2:03.26 | 1 | Mexico | José Ángel Martínez |
| Olympic Selection Time – 2:03.26 | 1 | Netherlands | Arjan Knipping |
| Olympic Selection Time – 2:03.26 | 1 | Panama | Tyler Christianson |
| Olympic Selection Time – 2:03.26 | 1 | Puerto Rico | Jarod Arroyo |
| Universality Places | 1 | Lebanon | Munzer Kabbara |
| Universality Places | 1 | Federated States of Micronesia | Tasi Limtiaco |
| Total | 45 | | |

#### Men's 400 m individual medley

| Qualification standard | No. of athletes | NOC | Qualified swimmers |
| Olympic Qualifying Time – 4:15.84 | 2 | Australia | Brendon Smith Se-Bom Lee |
| 2 | Great Britain | Max Litchfield Brodie Williams |
| 2 | Hungary | Péter Bernek Dávid Verrasztó |
| 2 | Italy | Pier Andrea Matteazzi Alberto Razzetti |
| 2 | Japan | Yuki Ikari Daiya Seto |
| 2 | ROC | Ilya Borodin Maxim Stupin |
| 2 | United States | Chase Kalisz Jay Litherland |
| 1 | Azerbaijan | Maksym Shemberev |
| 1 | China | Wang Shun |
| 1 | France | Léon Marchand |
| 1 | Germany | Jacob Heidtmann |
| 1 | Greece | Apostolos Papastamos |
| 1 | Netherlands | Arjan Knipping |
| 1 | New Zealand | Lewis Clareburt |
| 1 | Spain | Joan Lluís Pons |
| 1 | Switzerland | Jérémy Desplanches |
| Olympic Selection Time – 4:21.46 | 1 | Ecuador | Tomas Peribonio |
| Olympic Selection Time – 4:21.46 | 1 | Israel | Ron Polonsky |
| Olympic Selection Time – 4:21.46 | 1 | Puerto Rico | Jarod Arroyo |
| Olympic Selection Time – 4:21.46 | 1 | Portugal | José Paulo Lopes |
| Olympic Selection Time – 4:21.46 | 1 | Slovakia | Richard Nagy |
| Olympic Selection Time – 4:21.46 | 1 | Chinese Taipei | Wang Hsing-hao |
| Universality Places | 1 | Cuba | Luis Vega Torres |
| Universality Places | 1 | Liechtenstein | Christoph Meier |
| Total | 31 | | |

### Women's individual events
#### Women's 50 m freestyle

| Qualification standard | No. of athletes | NOC | Qualified swimmers |
| Olympic Qualifying Time – 24.77 | 2 | Australia | Cate Campbell Emma McKeon |
| Olympic Qualifying Time – 24.77 | 2 | China | Wu Qingfeng Zhang Yufei |
| Olympic Qualifying Time – 24.77 | 2 | Denmark | Pernille Blume Julie Kepp Jensen |
| Olympic Qualifying Time – 24.77 | 2 | France | Mélanie Henique Marie Wattel |
| Olympic Qualifying Time – 24.77 | 2 | Netherlands | Femke Heemskerk Ranomi Kromowidjojo |
| Olympic Qualifying Time – 24.77 | 2 | ROC | Maria Kameneva Arina Surkova |
| Olympic Qualifying Time – 24.77 | 2 | Sweden | Michelle Coleman Sarah Sjöström |
| Olympic Qualifying Time – 24.77 | 2 | United States | Simone Manuel Abbey Weitzeil |
| Olympic Qualifying Time – 24.77 | 1 | Brazil | Etiene Medeiros |
| Olympic Qualifying Time – 24.77 | 1 | Canada | Kayla Sanchez |
| Olympic Qualifying Time – 24.77 | 1 | Czech Republic | Barbora Seemanová |
| Olympic Qualifying Time – 24.77 | 1 | Great Britain | Anna Hopkin |
| Olympic Qualifying Time – 24.77 | 1 | Hong Kong | Siobhán Haughey |
| Olympic Qualifying Time – 24.77 | 1 | Poland | Katarzyna Wasick |
| Olympic Qualifying Time – 24.77 | 1 | South Africa | Emma Chelius |
| Olympic Selection Time – 25.51 | 1 | Algeria | Amel Melih |
| Olympic Selection Time – 25.51 | 1 | Colombia | Isabella Arcila |
| Olympic Selection Time – 25.51 | 1 | Cyprus | Kalia Antoniou |
| Olympic Selection Time – 25.51 | 1 | Egypt | Farida Osman |
| Olympic Selection Time – 25.51 | 1 | Ireland | Danielle Hill |
| Olympic Selection Time – 25.51 | 1 | Israel | Andrea Murez |
| Olympic Selection Time – 25.51 | 1 | Luxembourg | Julie Meynen |
| Olympic Selection Time – 25.51 | 1 | Romania | Bianca-Andreea Costea |
| Olympic Selection Time – 25.51 | 1 | Singapore | Quah Ting Wen |
| Olympic Selection Time – 25.51 | 1 | Spain | Lidón Muñoz del Campo |
| Olympic Selection Time – 25.51 | 1 | Thailand | Jenjira Srisa-ard |
| Olympic Selection Time – 25.51 | 1 | Trinidad and Tobago | Cherelle Thompson |
| Olympic Selection Time – 25.51 | 1 | Venezuela | Jeserik Pinto |
| Universality Places | 1 | Albania | Nikol Merizaj |
| Universality Places | 1 | Antigua and Barbuda | Samantha Roberts |
| Universality Places | 1 | Aruba | Allyson Ponson |
| Universality Places | 1 | Bahrain | Noor Taha |
| Universality Places | 1 | Bangladesh | Junayna Ahmed |
| Universality Places | 1 | Benin | Nafissath Radji |
| Universality Places | 1 | Bolivia | Karen Torrez |
| Universality Places | 1 | British Virgin Islands | Elinah Phillip |
| Universality Places | 1 | Burundi | Odrina Kaze |
| Universality Places | 1 | Burkina Faso | Adama Ouedraogo |
| Universality Places | 1 | Cambodia | Bunpichmorakat Kheun |
| Universality Places | 1 | Cameroon | Norah Elisabeth Milanesi |
| Universality Places | 1 | Central African Republic | Chloe Sauvourel |
| Universality Places | 1 | Croatia | Ema Rajić |
| Universality Places | 1 | East Timor | Imelda Ximenes |
| Universality Places | 1 | Ecuador | Anicka Delgado |
| Universality Places | 1 | Equatorial Guinea | Rita Ekomba |
| Universality Places | 1 | Eswatini | Robyn Young |
| Universality Places | 1 | Gabon | Aya Mpali |
| Universality Places | 1 | Guyana | Aleka Persaud |
| Universality Places | 1 | Jordan | Talita Baqlah |
| Universality Places | 1 | Kuwait | Lara Dashti |
| Universality Places | 1 | Laos | Siri Arun Budcharern |
| Universality Places | 1 | Malawi | Jessica Makwenda |
| Universality Places | 1 | Mongolia | Batbayaryn Enkhkhüslen |
| Universality Places | 1 | Mozambique | Alicia Mateus |
| Universality Places | 1 | Niger | Roukaya Mahamane |
| Universality Places | 1 | Pakistan | Bisma Khan |
| Universality Places | 1 | Palau | Osisang Chilton |
| Universality Places | 1 | Palestine | Dania Nour |
| Universality Places | 1 | Papua New Guinea | Judith Meauri |
| Universality Places | 1 | Republic of the Congo | Stefan Sangala |
| Universality Places | 1 | Qatar | Nada Arakji |
| Universality Places | 1 | Rwanda | Alphonsine Agahozo |
| Universality Places | 1 | Saint Lucia | Mikaili Charlemagne |
| Universality Places | 1 | Saint Vincent and the Grenadines | Mya de Freitas |
| Universality Places | 1 | Sierra Leone | Tity Dumbuya |
| Universality Places | 1 | Sudan | Haneen Ibrahim |
| Universality Places | 1 | Chinese Taipei | Huang Mei-chien |
| Universality Places | 1 | Tajikistan | Anastasiya Tyurina |
| Universality Places | 1 | Tonga | Noelani Malia Day |
| Universality Places | 1 | Zambia | Tilka Paljk |
| Total | 75 | | |

#### Women's 100 m freestyle

| Qualification standard | No. of athletes | NOC | Qualified swimmers |
| Olympic Qualifying Time – 54.38 | 2 | Australia | Cate Campbell Emma McKeon |
| Olympic Qualifying Time – 54.38 | 2 | Canada | Penny Oleksiak Kayla Sanchez |
| Olympic Qualifying Time – 54.38 | 2 | China | Wu Qingfeng Yang Junxuan |
| Olympic Qualifying Time – 54.38 | 2 | Denmark | Pernille Blume Signe Bro |
| Olympic Qualifying Time – 54.38 | 2 | France | Charlotte Bonnet Marie Wattel |
| Olympic Qualifying Time – 54.38 | 2 | Great Britain | Freya Anderson Anna Hopkin |
| Olympic Qualifying Time – 54.38 | 2 | Israel | Anastasia Gorbenko Andrea Murez |
| Olympic Qualifying Time – 54.38 | 2 | Netherlands | Femke Heemskerk Ranomi Kromowidjojo |
| Olympic Qualifying Time – 54.38 | 2 | Sweden | Michelle Coleman Sarah Sjöström |
| Olympic Qualifying Time – 54.38 | 2 | United States | Erika Brown Abbey Weitzeil |
| Olympic Qualifying Time – 54.38 | 1 | Belarus | Anastasiya Shkurdai |
| Olympic Qualifying Time – 54.38 | 1 | Czech Republic | Barbora Seemanová |
| Olympic Qualifying Time – 54.38 | 1 | Germany | Annika Bruhn |
| Olympic Qualifying Time – 54.38 | 1 | Hong Kong | Siobhán Haughey |
| Olympic Qualifying Time – 54.38 | 1 | Italy | Federica Pellegrini |
| Olympic Qualifying Time – 54.38 | 1 | Poland | Katarzyna Wasick |
| Olympic Qualifying Time – 54.38 | 1 | ROC | Maria Kameneva |
| Olympic Qualifying Time – 54.38 | 1 | Slovenia | Janja Šegel |
| Olympic Qualifying Time – 54.38 | 1 | South Africa | Erin Gallagher |
| Olympic Qualifying Time – 54.38 | 1 | Spain | Lidón Muñoz del Campo |
| Olympic Selection Time – 56.01 | 1 | Cyprus | Kalia Antoniou |
| Olympic Selection Time – 56.01 | 1 | Ecuador | Anicka Delgado |
| Olympic Selection Time – 56.01 | 1 | Finland | Fanny Teijonsalo |
| Olympic Selection Time – 56.01 | 1 | Latvia | Ieva Maļuka |
| Olympic Selection Time – 56.01 | 1 | Luxembourg | Julie Meynen |
| Olympic Selection Time – 56.01 | 1 | Puerto Rico | Miriam Sheehan |
| Olympic Selection Time – 56.01 | 1 | Romania | Bianca-Andreea Costea |
| Olympic Selection Time – 56.01 | 1 | Singapore | Quah Ting Wen |
| Olympic Selection Time – 56.01 | 1 | Switzerland | Maria Ugolkova |
| Universality Places | 1 | Algeria | Amel Melih |
| Universality Places | 1 | Angola | Catarina Sousa |
| Universality Places | 1 | Armenia | Varsenik Manucharyan |
| Universality Places | 1 | Cayman Islands | Jillian Crooks |
| Universality Places | 1 | Georgia | Mariam Imnadze |
| Universality Places | 1 | Guam | Mineri Gomez |
| Universality Places | 1 | Iceland | Snæfríður Jórunnardóttir |
| Universality Places | 1 | Marshall Islands | Colleen Furgeson |
| Universality Places | 1 | Montenegro | Anđela Antunović |
| Universality Places | 1 | Nepal | Gaurika Singh |
| Universality Places | 1 | Nicaragua | Maria Victoria Schutmeizer |
| Universality Places | 1 | Nigeria | Abiola Ogunbanwo |
| Universality Places | 1 | North Macedonia | Mia Eminova |
| Universality Places | 1 | Senegal | Jeanne Boutbien |
| Universality Places | 1 | Thailand | Jenjira Srisa-ard |
| Total | 53 | | |

#### Women's 200 m freestyle

| Qualification standard | No. of athletes | NOC | Qualified swimmers |
| Olympic Qualifying Time – 1:57.28 | 2 | Australia | Ariarne Titmus Madison Wilson |
| Olympic Qualifying Time – 1:57.28 | 2 | China | Li Bingjie Yang Junxuan |
| Olympic Qualifying Time – 1:57.28 | 2 | Canada | Summer McIntosh Penny Oleksiak |
| Olympic Qualifying Time – 1:57.28 | 2 | Germany | Annika Bruhn Isabel Gose |
| Olympic Qualifying Time – 1:57.28 | 2 | United States | Katie Ledecky Allison Schmitt |
| Olympic Qualifying Time – 1:57.28 | 1 | Czech Republic | Barbora Seemanová |
| Olympic Qualifying Time – 1:57.28 | 1 | France | Charlotte Bonnet |
| Olympic Qualifying Time – 1:57.28 | 1 | Great Britain | Freya Anderson |
| Olympic Qualifying Time – 1:57.28 | 1 | Hong Kong | Siobhán Haughey |
| Olympic Qualifying Time – 1:57.28 | 1 | Italy | Federica Pellegrini |
| Olympic Qualifying Time – 1:57.28 | 1 | ROC | Valeriya Salamatina |
| Olympic Qualifying Time – 1:57.28 | 1 | Sweden | Sarah Sjöström |
| Olympic Selection Time – 2:00.80 | 1 | Bahamas | Joanna Evans |
| Olympic Selection Time – 2:00.80 | 1 | Cuba | Elisbet Gámez |
| Olympic Selection Time – 2:00.80 | 1 | Iceland | Snæfríður Jórunnardóttir |
| Olympic Selection Time – 2:00.80 | 1 | Israel | Andrea Murez |
| Olympic Selection Time – 2:00.80 | 1 | Liechtenstein | Julia Hassler |
| Olympic Selection Time – 2:00.80 | 1 | New Zealand | Erika Fairweather |
| Olympic Selection Time – 2:00.80 | 1 | Slovenia | Janja Šegel |
| Olympic Selection Time – 2:00.80 | 1 | Vietnam | Nguyễn Thị Ánh Viên |
| Universality Places | 1 | Costa Rica | Beatriz Padron |
| Universality Places | 1 | Guatemala | Gabriela Santis |
| Universality Places | 1 | Latvia | Ieva Maļuka |
| Universality Places | 1 | Lebanon | Gabriella Doueihy |
| Universality Places | 1 | Morocco | Lina Khiyara |
| Total | 30 | | |

#### Women's 400 m freestyle

| Qualification standard | No. of athletes | NOC | Qualified swimmers |
| Olympic Qualifying Time – 4:07.90 | 2 | Australia | Ariarne Titmus Tamsin Cook |
| Olympic Qualifying Time – 4:07.90 | 2 | China | Li Bingjie Tang Muhan |
| Olympic Qualifying Time – 4:07.90 | 2 | Germany | Isabel Gose Leonie Kullmann |
| Olympic Qualifying Time – 4:07.90 | 2 | Japan | Waka Kobori Miyu Namba |
| Olympic Qualifying Time – 4:07.90 | 2 | ROC | Anna Egorova Anastasiya Kirpichnikova |
| Olympic Qualifying Time – 4:07.90 | 2 | Turkey | Beril Böcekler Merve Tuncel |
| Olympic Qualifying Time – 4:07.90 | 2 | United States | Katie Ledecky Paige Madden |
| Olympic Qualifying Time – 4:07.90 | 1 | Argentina | Delfina Pignatiello |
| Olympic Qualifying Time – 4:07.90 | 1 | Bahamas | Joanna Evans |
| Olympic Qualifying Time – 4:07.90 | 1 | Canada | Summer McIntosh |
| Olympic Qualifying Time – 4:07.90 | 1 | Hungary | Ajna Késely |
| Olympic Qualifying Time – 4:07.90 | 1 | Italy | Simona Quadarella |
| Olympic Qualifying Time – 4:07.90 | 1 | New Zealand | Erika Fairweather |
| Olympic Selection Time – 4:15.34 | 1 | Austria | Marlene Kahler |
| Olympic Selection Time – 4:15.34 | 1 | Cuba | Elisbet Gámez |
| Olympic Selection Time – 4:15.34 | 1 | Liechtenstein | Julia Hassler |
| Olympic Selection Time – 4:15.34 | 1 | South Korea | Han Da-kyung |
| Universality Places | 1 | Ivory Coast | Talita Te Flan |
| Universality Places | 1 | Kosovo | Eda Zeqiri |
| Universality Places | 1 | Madagascar | Tiana Rabarijaona |
| Universality Places | 1 | Malta | Sasha Gatt |
| Universality Places | 1 | Virgin Islands | Natalia Kuipers |
| Total | 29 | | |

#### Women's 800 m freestyle

| Qualification standard | No. of athletes | NOC | Qualified swimmers |
| Olympic Qualifying Time – 8:33.36 | 2 | Australia | Ariarne Titmus Kiah Melverton |
| Olympic Qualifying Time – 8:33.36 | 2 | China | Li Bingjie Wang Jianjiahe |
| Olympic Qualifying Time – 8:33.36 | 2 | Germany | Isabel Gose Sarah Köhler |
| Olympic Qualifying Time – 8:33.36 | 2 | Italy | Martina Caramignoli Simona Quadarella |
| Olympic Qualifying Time – 8:33.36 | 2 | Japan | Waka Kobori Miyu Namba |
| Olympic Qualifying Time – 8:33.36 | 2 | ROC | Anna Egorova Anastasiya Kirpichnikova |
| Olympic Qualifying Time – 8:33.36 | 2 | Spain | Mireia Belmonte Jimena Pérez |
| Olympic Qualifying Time – 8:33.36 | 2 | Turkey | Deniz Ertan Merve Tuncel |
| Olympic Qualifying Time – 8:33.36 | 2 | United States | Katie Grimes Katie Ledecky |
| Olympic Qualifying Time – 8:33.36 | 1 | Argentina | Delfina Pignatiello |
| Olympic Qualifying Time – 8:33.36 | 1 | Austria | Marlene Kahler |
| Olympic Qualifying Time – 8:33.36 | 1 | Canada | Summer McIntosh |
| Olympic Qualifying Time – 8:33.36 | 1 | Hungary | Ajna Késely |
| Olympic Qualifying Time – 8:33.36 | 1 | Liechtenstein | Julia Hassler |
| Olympic Qualifying Time – 8:33.36 | 1 | Portugal | Tamila Holub |
| Olympic Selection Time – 8:48.76 | 1 | Brazil | Viviane Jungblut |
| Olympic Selection Time – 8:48.76 | 1 | Chile | Kristel Köbrich |
| Olympic Selection Time – 8:48.76 | 1 | New Zealand | Eve Thomas |
| Olympic Selection Time – 8:48.76 | 1 | Slovenia | Katja Fain |
| Olympic Selection Time – 8:48.76 | 1 | South Korea | Han Da-kyung |
| Olympic Selection Time – 8:48.76 | 1 | Vietnam | Nguyễn Thị Ánh Viên |
| Universality Places | 1 | Malta | Sasha Gatt |
| Universality Places | 1 | San Marino | Arianna Valloni |
| Total | 31 | | |

#### Women's 1500 m freestyle

| Qualification standard | No. of athletes | NOC | Qualified swimmers |
| Olympic Qualifying Time – 16:32.04 | 2 | Australia | Maddy Gough Kiah Melverton |
| Olympic Qualifying Time – 16:32.04 | 2 | Brazil | Beatriz Dizotti Viviane Jungblut |
| Olympic Qualifying Time – 16:32.04 | 2 | China | Li Bingjie Wang Jianjiahe |
| Olympic Qualifying Time – 16:32.04 | 2 | Germany | Sarah Köhler Celine Rieder |
| Olympic Qualifying Time – 16:32.04 | 2 | Hungary | Ajna Késely Viktória Mihályvári-Farkas |
| Olympic Qualifying Time – 16:32.04 | 2 | Italy | Martina Caramignoli Simona Quadarella |
| Olympic Qualifying Time – 16:32.04 | 2 | New Zealand | Hayley McIntosh Eve Thomas |
| Olympic Qualifying Time – 16:32.04 | 2 | Portugal | Diana Durães Tamila Holub |
| Olympic Qualifying Time – 16:32.04 | 2 | Spain | Mireia Belmonte Jimena Pérez |
| Olympic Qualifying Time – 16:32.04 | 2 | Turkey | Beril Böcekler Merve Tuncel |
| Olympic Qualifying Time – 16:32.04 | 2 | United States | Katie Ledecky Erica Sullivan |
| Olympic Qualifying Time – 16:32.04 | 1 | Argentina | Delfina Pignatiello |
| Olympic Qualifying Time – 16:32.04 | 1 | Austria | Marlene Kahler |
| Olympic Qualifying Time – 16:32.04 | 1 | Canada | Katrina Bellio |
| Olympic Qualifying Time – 16:32.04 | 1 | Chile | Kristel Köbrich |
| Olympic Qualifying Time – 16:32.04 | 1 | Denmark | Helena Rosendahl Bach |
| Olympic Qualifying Time – 16:32.04 | 1 | Liechtenstein | Julia Hassler |
| Olympic Qualifying Time – 16:32.04 | 1 | ROC | Anastasiya Kirpichnikova |
| Olympic Qualifying Time – 16:32.04 | 1 | Slovenia | Katja Fain |
| Olympic Qualifying Time – 16:32.04 | 1 | South Korea | Han Da-kyung |
| Olympic Selection Time – 17:01.80 | 1 | San Marino | Arianna Valloni |
| Total | 32 | | |

#### Women's 100 m backstroke

| Qualification standard | No. of athletes | NOC | Qualified swimmers |
| Olympic Qualifying Time – 1:00.25 | 2 | Australia | Kaylee McKeown Emily Seebohm |
| Olympic Qualifying Time – 1:00.25 | 2 | Canada | Kylie Masse Taylor Ruck |
| Olympic Qualifying Time – 1:00.25 | 2 | China | Chen Jie Peng Xuwei |
| Olympic Qualifying Time – 1:00.25 | 2 | Great Britain | Kathleen Dawson Cassie Wild |
| Olympic Qualifying Time – 1:00.25 | 2 | Netherlands | Kira Toussaint Maaike de Waard |
| Olympic Qualifying Time – 1:00.25 | 2 | ROC | Anastasia Fesikova Maria Kameneva |
| Olympic Qualifying Time – 1:00.25 | 2 | Sweden | Michelle Coleman Louise Hansson |
| Olympic Qualifying Time – 1:00.25 | 2 | United States | Regan Smith Rhyan White |
| Olympic Qualifying Time – 1:00.25 | 1 | Belarus | Anastasiya Shkurdai |
| Olympic Qualifying Time – 1:00.25 | 1 | Czech Republic | Simona Kubová |
| Olympic Qualifying Time – 1:00.25 | 1 | France | Béryl Gastaldello |
| Olympic Qualifying Time – 1:00.25 | 1 | Germany | Laura Riedemann |
| Olympic Qualifying Time – 1:00.25 | 1 | Hong Kong | Stephanie Au |
| Olympic Qualifying Time – 1:00.25 | 1 | Hungary | Katalin Burián |
| Olympic Qualifying Time – 1:00.25 | 1 | Ireland | Danielle Hill |
| Olympic Qualifying Time – 1:00.25 | 1 | Italy | Margherita Panziera |
| Olympic Qualifying Time – 1:00.25 | 1 | Japan | Anna Konishi |
| Olympic Qualifying Time – 1:00.25 | 1 | Norway | Ingeborg Løyning |
| Olympic Qualifying Time – 1:00.25 | 1 | South Korea | Lee Eun-ji |
| Olympic Selection Time – 1:02.06 | 1 | Austria | Lena Grabowski |
| Olympic Selection Time – 1:02.06 | 1 | Colombia | Isabella Arcila |
| Olympic Selection Time – 1:02.06 | 1 | El Salvador | Celina Márquez |
| Olympic Selection Time – 1:02.06 | 1 | Finland | Mimosa Jallow |
| Olympic Selection Time – 1:02.06 | 1 | Moldova | Tatiana Salcuțan |
| Olympic Selection Time – 1:02.06 | 1 | New Zealand | Ali Galyer |
| Olympic Selection Time – 1:02.06 | 1 | Ukraine | Daryna Zevina |
| Universality Places | 1 | Barbados | Danielle Titus |
| Universality Places | 1 | Dominican Republic | Krystal Lara |
| Universality Places | 1 | Grenada | Kimberly Ince |
| Universality Places | 1 | India | Maana Patel |
| Universality Places | 1 | Kazakhstan | Diana Nazarova |
| Universality Places | 1 | Peru | McKenna DeBever |
| Universality Places | 1 | Seychelles | Felicity Passon |
| Universality Places | 1 | Zimbabwe | Donata Katai |
| Total | 44 | | |

#### Women's 200 m backstroke

| Qualification standard | No. of athletes | NOC | Qualified swimmers |
| Olympic Qualifying Time – 2:10.39 | 2 | Australia | Kaylee McKeown Emily Seebohm |
| Olympic Qualifying Time – 2:10.39 | 2 | Canada | Kylie Masse Taylor Ruck |
| Olympic Qualifying Time – 2:10.39 | 2 | China | Liu Yaxin Peng Xuwei |
| Olympic Qualifying Time – 2:10.39 | 2 | Great Britain | Kathleen Dawson Cassie Wild |
| Olympic Qualifying Time – 2:10.39 | 2 | Hungary | Katalin Burián Katinka Hosszú |
| Olympic Qualifying Time – 2:10.39 | 2 | Netherlands | Kira Toussaint Sharon van Rouwendaal |
| Olympic Qualifying Time – 2:10.39 | 2 | United States | Phoebe Bacon Rhyan White |
| Olympic Qualifying Time – 2:10.39 | 1 | Austria | Lena Grabowski |
| Olympic Qualifying Time – 2:10.39 | 1 | Italy | Margherita Panziera |
| Olympic Qualifying Time – 2:10.39 | 1 | Moldova | Tatiana Salcuțan |
| Olympic Qualifying Time – 2:10.39 | 1 | New Zealand | Ali Galyer |
| Olympic Qualifying Time – 2:10.39 | 1 | Poland | Laura Bernat |
| Olympic Qualifying Time – 2:10.39 | 1 | ROC | Daria Ustinova |
| Olympic Qualifying Time – 2:10.39 | 1 | South Korea | Lee Eun-ji |
| Olympic Qualifying Time – 2:10.39 | 1 | Spain | África Zamorano |
| Olympic Qualifying Time – 2:10.39 | 1 | Ukraine | Daryna Zevina |
| Olympic Selection Time – 2:14.30 | 1 | Czech Republic | Simona Kubová |
| Olympic Selection Time – 2:14.30 | 1 | Dominican Republic | Krystal Lara |
| Olympic Selection Time – 2:14.30 | 1 | El Salvador | Celina Márquez |
| Olympic Selection Time – 2:14.30 | 1 | Israel | Aviv Barzelay |
| Olympic Selection Time – 2:14.30 | 1 | Norway | Ingeborg Løyning |
| Olympic Selection Time – 2:14.30 | 1 | Seychelles | Felicity Passon |
| Total | 30 | | |

#### Women's 100 m breaststroke

| Qualification standard | No. of athletes | NOC | Qualified swimmers |
| Olympic Qualifying Time – 1:07.07 | 2 | Australia | Jessica Hansen Chelsea Hodges |
| Olympic Qualifying Time – 1:07.07 | 2 | Canada | Kierra Smith Kelsey Wog |
| Olympic Qualifying Time – 1:07.07 | 2 | Great Britain | Molly Renshaw Sarah Vasey |
| Olympic Qualifying Time – 1:07.07 | 2 | Italy | Martina Carraro Benedetta Pilato |
| Olympic Qualifying Time – 1:07.07 | 2 | Japan | Reona Aoki Kanako Watanabe |
| Olympic Qualifying Time – 1:07.07 | 2 | ROC | Evgenia Chikunova Yuliya Yefimova |
| Olympic Qualifying Time – 1:07.07 | 2 | Sweden | Emelie Fast Sophie Hansson |
| Olympic Qualifying Time – 1:07.07 | 2 | United States | Lydia Jacoby Lilly King |
| Olympic Qualifying Time – 1:07.07 | 1 | Argentina | Julia Sebastián |
| Olympic Qualifying Time – 1:07.07 | 1 | Belarus | Alina Zmushka |
| Olympic Qualifying Time – 1:07.07 | 1 | Belgium | Fanny Lecluyse |
| Olympic Qualifying Time – 1:07.07 | 1 | China | Tang Qianting |
| Olympic Qualifying Time – 1:07.07 | 1 | Estonia | Eneli Jefimova |
| Olympic Qualifying Time – 1:07.07 | 1 | Finland | Ida Hulkko |
| Olympic Qualifying Time – 1:07.07 | 1 | Ireland | Mona McSharry |
| Olympic Qualifying Time – 1:07.07 | 1 | Israel | Anastasia Gorbenko |
| Olympic Qualifying Time – 1:07.07 | 1 | Jamaica | Alia Atkinson |
| Olympic Qualifying Time – 1:07.07 | 1 | Netherlands | Tes Schouten |
| Olympic Qualifying Time – 1:07.07 | 1 | South Africa | Tatjana Schoenmaker |
| Olympic Qualifying Time – 1:07.07 | 1 | Spain | Jessica Vall |
| Olympic Qualifying Time – 1:07.07 | 1 | Switzerland | Lisa Mamie |
| Olympic Selection Time – 1:09.08 | 1 | Bulgaria | Diana Petkova |
| Olympic Selection Time – 1:09.08 | 1 | Croatia | Ema Rajić |
| Olympic Selection Time – 1:09.08 | 1 | Germany | Anna Elendt |
| Olympic Selection Time – 1:09.08 | 1 | Lithuania | Kotryna Teterevkova |
| Olympic Selection Time – 1:09.08 | 1 | Malaysia | Phee Jinq En |
| Olympic Selection Time – 1:09.08 | 1 | Mexico | Melissa Rodríguez |
| Universality Places | 1 | American Samoa | Tilali Scanlan |
| Universality Places | 1 | Cape Verde | Jayla Pina |
| Universality Places | 1 | Cook Islands | Kirsten Fisher-Marsters |
| Universality Places | 1 | Federated States of Micronesia | Taeyanna Adams |
| Universality Places | 0 | Guinea | Mariama Touré |
| Universality Places | 1 | Haiti | Emilie Grand'Pierre |
| Universality Places | 1 | Maldives | Aishath Sajina |
| Universality Places | 1 | Mauritius | Alicia Kok Shun |
| Universality Places | 1 | Monaco | Claudia Verdino |
| Universality Places | 1 | Panama | Emily Santos |
| Universality Places | 1 | Slovakia | Andrea Podmaníková |
| Universality Places | 1 | Turkmenistan | Darya Semyonova |
| Universality Places | 1 | Yemen | Nooran Ba-Matraf |
| Total | 47 | | |

#### Women's 200 m breaststroke

| Qualification standard | No. of athletes | NOC | Qualified swimmers |
| Olympic Qualifying Time – 2:25.52 | 2 | Australia | Abbey Harkin Jenna Strauch |
| Olympic Qualifying Time – 2:25.52 | 2 | Canada | Sydney Pickrem Kelsey Wog |
| Olympic Qualifying Time – 2:25.52 | 2 | Great Britain | Molly Renshaw Abbie Wood |
| Olympic Qualifying Time – 2:25.52 | 2 | ROC | Evgenia Chikunova Maria Temnikova |
| Olympic Qualifying Time – 2:25.52 | 2 | South Africa | Kaylene Corbett Tatjana Schoenmaker |
| Olympic Qualifying Time – 2:25.52 | 2 | Spain | Marina García Jessica Vall |
| Olympic Qualifying Time – 2:25.52 | 2 | United States | Lilly King Annie Lazor |
| Olympic Qualifying Time – 2:25.52 | 1 | Argentina | Julia Sebastián |
| Olympic Qualifying Time – 2:25.52 | 1 | Belarus | Alina Zmushka |
| Olympic Qualifying Time – 2:25.52 | 1 | Belgium | Fanny Lecluyse |
| Olympic Qualifying Time – 2:25.52 | 1 | China | Yu Jingyao |
| Olympic Qualifying Time – 2:25.52 | 1 | Czech Republic | Kristýna Horská |
| Olympic Qualifying Time – 2:25.52 | 1 | Hungary | Eszter Békési |
| Olympic Qualifying Time – 2:25.52 | 1 | Italy | Francesca Fangio |
| Olympic Qualifying Time – 2:25.52 | 1 | Japan | Kanako Watanabe |
| Olympic Qualifying Time – 2:25.52 | 1 | Sweden | Sophie Hansson |
| Olympic Qualifying Time – 2:25.52 | 1 | Switzerland | Lisa Mamie |
| Olympic Selection Time – 2:29.89 | 1 | Estonia | Eneli Jefimova |
| Olympic Selection Time – 2:29.89 | 1 | Ireland | Mona McSharry |
| Olympic Selection Time – 2:29.89 | 1 | Lithuania | Kotryna Teterevkova |
| Olympic Selection Time – 2:29.89 | 1 | Mexico | Melissa Rodríguez |
| Olympic Selection Time – 2:29.89 | 1 | Slovakia | Andrea Podmaníková |
| Universality Places | 1 | Malaysia | Phee Jinq En |
| Universality Places | 1 | Maldives | Aishath Sajina |
| Total | 31 | | |

#### Women's 100 m butterfly

| Qualification standard | No. of athletes | NOC | Qualified swimmers |
| Olympic Qualifying Time – 57.92 | 2 | Australia | Emma McKeon Brianna Throssell |
| Olympic Qualifying Time – 57.92 | 2 | Canada | Maggie MacNeil Katerine Savard |
| Olympic Qualifying Time – 57.92 | 2 | Italy | Ilaria Bianchi Elena di Liddo |
| Olympic Qualifying Time – 57.92 | 2 | ROC | Svetlana Chimrova Arina Surkova |
| Olympic Qualifying Time – 57.92 | 2 | Sweden | Louise Hansson Sarah Sjöström |
| Olympic Qualifying Time – 57.92 | 2 | United States | Claire Curzan Torri Huske |
| Olympic Qualifying Time – 57.92 | 1 | Belarus | Anastasiya Shkurdai |
| Olympic Qualifying Time – 57.92 | 1 | Bosnia and Herzegovina | Lana Pudar |
| Olympic Qualifying Time – 57.92 | 1 | China | Zhang Yufei |
| Olympic Qualifying Time – 57.92 | 1 | Denmark | Emilie Beckmann |
| Olympic Qualifying Time – 57.92 | 1 | Egypt | Farida Osman |
| Olympic Qualifying Time – 57.92 | 1 | France | Marie Wattel |
| Olympic Qualifying Time – 57.92 | 1 | Great Britain | Harriet Jones |
| Olympic Qualifying Time – 57.92 | 1 | Greece | Anna Ntountounaki |
| Olympic Qualifying Time – 57.92 | 1 | South Africa | Erin Gallagher |
| Olympic Selection Time – 59.66 | 1 | Hungary | Dalma Sebestyén |
| Olympic Selection Time – 59.66 | 1 | Ireland | Ellen Walshe |
| Olympic Selection Time – 59.66 | 1 | Israel | Anastasia Gorbenko |
| Olympic Selection Time – 59.66 | 1 | Philippines | Remedy Rule |
| Olympic Selection Time – 59.66 | 1 | South Korea | An Se-hyeon |
| Universality Places | 1 | Azerbaijan | Mariam Sheikhalizadehkhanghah |
| Universality Places | 1 | Paraguay | Luana Alonso |
| Universality Places | 1 | Puerto Rico | Miriam Sheehan |
| Universality Places | 1 | Sri Lanka | Aniqah Gaffoor |
| Universality Places | 1 | Venezuela | Jeserik Pinto |
| Invitational Places | 1 | Refugee Olympic Team | Yusra Mardini |
| Total | 42 | | |

#### Women's 200 m butterfly

| Qualification standard | No. of athletes | NOC | Qualified swimmers |
| Olympic Qualifying Time – 2:08.43 | 2 | China | Yu Liyan Zhang Yufei |
| Olympic Qualifying Time – 2:08.43 | 2 | Great Britain | Laura Stephens Alys Thomas |
| Olympic Qualifying Time – 2:08.43 | 2 | Hungary | Katinka Hosszú Boglárka Kapás |
| Olympic Qualifying Time – 2:08.43 | 2 | United States | Hali Flickinger Regan Smith |
| Olympic Qualifying Time – 2:08.43 | 1 | Australia | Brianna Throssell |
| Olympic Qualifying Time – 2:08.43 | 1 | Germany | Franziska Hentke |
| Olympic Qualifying Time – 2:08.43 | 1 | Japan | Suzuka Hasegawa |
| Olympic Qualifying Time – 2:08.43 | 1 | Portugal | Ana Monteiro |
| Olympic Qualifying Time – 2:08.43 | 1 | ROC | Svetlana Chimrova |
| Olympic Selection Time – 2:12.28 | 1 | Denmark | Helena Rosendahl Bach |
| Olympic Selection Time – 2:12.28 | 1 | Philippines | Remedy Rule |
| Olympic Selection Time – 2:12.28 | 1 | Turkey | Defne Taçyıldız |
| Universality Places | 1 | Honduras | Julimar Ávila |
| Total | 17 | | |

#### Women's 200 m individual medley

| Qualification standard | No. of athletes | NOC | Qualified swimmers |
| Olympic Qualifying Time – 2:12.56 | 2 | Canada | Bailey Andison Sydney Pickrem |
| Olympic Qualifying Time – 2:12.56 | 2 | China | Chen Xinyi Yu Yiting |
| Olympic Qualifying Time – 2:12.56 | 2 | France | Cyrielle Duhamel Fantine Lesaffre |
| Olympic Qualifying Time – 2:12.56 | 2 | Great Britain | Alicia Wilson Abbie Wood |
| Olympic Qualifying Time – 2:12.56 | 2 | Hungary | Katinka Hosszú Dalma Sebestyén |
| Olympic Qualifying Time – 2:12.56 | 2 | Italy | Ilaria Cusinato Sara Franceschi |
| Olympic Qualifying Time – 2:12.56 | 2 | Japan | Yui Ohashi Miho Teramura |
| Olympic Qualifying Time – 2:12.56 | 2 | United States | Kate Douglass Alex Walsh |
| Olympic Qualifying Time – 2:12.56 | 0 | Australia | Kaylee McKeown |
| Olympic Qualifying Time – 2:12.56 | 1 | Bulgaria | Diana Petkova |
| Olympic Qualifying Time – 2:12.56 | 1 | Ireland | Ellen Walshe |
| Olympic Qualifying Time – 2:12.56 | 1 | Israel | Anastasia Gorbenko |
| Olympic Qualifying Time – 2:12.56 | 1 | South Korea | Kim Seo-yeong |
| Olympic Qualifying Time – 2:12.56 | 1 | Switzerland | Maria Ugolkova |
| Olympic Qualifying Time – 2:12.56 | 1 | Turkey | Viktoriya Zeynep Güneş |
| Olympic Selection Time – 2:16.54 | 1 | Czech Republic | Kristýna Horská |
| Olympic Selection Time – 2:16.54 | 1 | Peru | McKenna DeBever |
| Olympic Selection Time – 2:16.54 | 1 | Serbia | Anja Crevar |
| Olympic Selection Time – 2:16.54 | 1 | South Africa | Rebecca Meder |
| Olympic Selection Time – 2:16.54 | 1 | Spain | África Zamorano |
| Universality Places | 1 | Uruguay | Nicole Frank |
| Total | 29 | | |

#### Women's 400 m individual medley

| Qualification standard | No. of athletes | NOC | Qualified swimmers |
| Olympic Qualifying Time – 4:38.53 | 2 | Canada | Tessa Cieplucha Sydney Pickrem |
| Olympic Qualifying Time – 4:38.53 | 2 | Italy | Ilaria Cusinato Sara Franceschi |
| Olympic Qualifying Time – 4:38.53 | 2 | Japan | Yui Ohashi Ageha Tanigawa |
| Olympic Qualifying Time – 4:38.53 | 2 | Hungary | Katinka Hosszú Viktória Mihályvári-Farkas |
| Olympic Qualifying Time – 4:38.53 | 2 | United States | Hali Flickinger Emma Weyant |
| Olympic Qualifying Time – 4:38.53 | 1 | China | Yu Yiting |
| Olympic Qualifying Time – 4:38.53 | 1 | France | Fantine Lesaffre |
| Olympic Qualifying Time – 4:38.53 | 1 | Great Britain | Aimee Willmott |
| Olympic Qualifying Time – 4:38.53 | 1 | Serbia | Anja Crevar |
| Olympic Qualifying Time – 4:38.53 | 1 | Spain | Mireia Belmonte |
| Olympic Selection Time – 4:46.89 | 1 | Argentina | Virginia Bardach |
| Olympic Selection Time – 4:46.89 | 1 | Israel | Anastasia Gorbenko |
| Olympic Selection Time – 4:46.89 | 1 | Slovenia | Katja Fain |
| Universality Places | 1 | Indonesia | Azzahra Permatahani |
| Total | 19 | | |

## Relay events

16 teams qualify in each relay event, for a total of 112 relay teams.
Teams can qualify by one of two routes:
* The twelve highest placed nations in relay events at the 18th FINA World Championships 2019 in Gwangju qualified for the corresponding relay event at the Olympic Games Tokyo 2020 based upon the results achieved in the heats.
* The remaining four teams per relay event will be the teams with the fastest times in the FINA World Rankings of 31 May 2021 achieved during the qualification period, in the qualifying events approved by FINA
* If any of the qualified teams from either group are not able to participate for any reason, the next highest ranked eligible team from the FINA World Rankings will be offered the relay team quota place.

### Qualification summary

| NOC | Men | Men | Men | Women | Women | Women | Mixed | Total |
| NOC | 4 × 100 free | 4 × 200 free | 4 × 100 medley | 4 × 100 free | 4 × 200 free | 4 × 100 medley | 4 × 100 medley | Total |
| Australia | | | | | | | | 7 |
| Belarus | | | | | | | | 3 |
| Brazil | | | | | | | | 6 |
| Canada | | | | | | | | 6 |
| China | | | | | | | | 6 |
| Czech Republic | | | | | | | | 1 |
| Denmark | | | | | | | | 2 |
| France | | | | | | | | 5 |
| Germany | | | | | | | | 7 |
| Great Britain | | | | | | | | 6 |
| Greece | | | | | | | | 3 |
| Hong Kong | | | | | | | | 3 |
| Hungary | | | | | | | | 5 |
| Ireland | | | | | | | | 1 |
| Israel | | | | | | | | 2 |
| Italy | | | | | | | | 6 |
| Japan | | | | | | | | 7 |
| Lithuania | | | | | | | | 1 |
| Netherlands | | | | | | | | 4 |
| New Zealand | | | | | | | | 1 |
| Poland | | | | | | | | 5 |
| ROC | | | | | | | | 7 |
| Serbia | | | | | | | | 1 |
| South Africa | | | | | | | | 2 |
| South Korea | | | | | | | | 2 |
| Spain | | | | | | | | 1 |
| Sweden | | | | | | | | 2 |
| Switzerland | | | | | | | | 2 |
| Turkey | | | | | | | | 1 |
| United States | | | | | | | | 7 |
| Total: 29 NOCs | 16 | 16 | 16 | 16 | 16 | 16 | 16 | |

### Men's 4 × 100 m freestyle relay

| Qualification event | No. of teams | Qualified teams |
| 2019 World Championships | 12 | United States Great Britain ROC Australia Italy Brazil France Hungary Japan Greece Germany Poland |
| Best times of non-qualifiers | 4 | Canada Switzerland Serbia Netherlands |
| Total | 16 | |

### Men's 4 × 200 m freestyle relay

| Qualification event | No. of teams | Qualified teams |
| 2019 World Championships | 12 | Italy ROC United States Australia China Brazil Great Britain Germany Japan Israel Poland Switzerland |
| Best times of non-qualifiers | 4 | France Hungary Ireland South Korea |
| Total | 16 | |

### Men's 4 × 100 m medley relay

| Qualification event | No. of teams | Qualified teams |
| 2019 World Championships | 12 | ROC United States Japan Great Britain Australia Brazil China Germany Belarus Canada Lithuania Hungary |
| Best times of non-qualifiers | 4 | Italy France Poland Greece |
| Total | 16 | |

### Women's 4 × 100 m freestyle relay

| Qualification event | No. of teams | Qualified teams |
| 2019 World Championships | 12 | Australia Canada Sweden United States Japan Netherlands China Germany ROC Hong Kong Czech Republic Poland |
| Best times of non-qualifiers | 4 | Great Britain France Denmark Brazil |
| Total | 16 | |

### Women's 4 × 200 m freestyle relay

| Qualification event | No. of teams | Qualified teams |
| 2019 World Championships | 12 | Australia United States ROC China Germany Canada Hungary Japan Poland New Zealand Hong Kong South Korea |
| Best times of non-qualifiers | 4 | Great Britain Italy France Israel |
| Reallocation of unused quota | 5 | Brazil Denmark Belgium Turkey South Africa |
| Total | 16 | |

### Women's 4 × 100 m medley relay

| Qualification event | No. of teams | Qualified teams |
| 2019 World Championships | 12 | United States Australia Italy Canada China Sweden Great Britain Japan Germany Netherlands Switzerland ROC |
| Best times of non-qualifiers | 4 | Belarus Finland Hong Kong South Africa |
| Reallocation of unused quota | 2 | Denmark Spain |
| Total | 16 | |

### Mixed 4 × 100 m medley relay

| Qualification event | No. of teams | Qualified teams |
| 2019 World Championships | 12 | United States Australia ROC Great Britain Canada Italy Netherlands Germany Belarus Israel Poland Hungary |
| Best times of non-qualifiers | 4 | China Japan Greece Brazil |
| Total | 16 | |

## Open water events
### Timeline

| Event | Date | Venue |
| 2019 World Aquatics Championships | July 12–28, 2019 | Gwangju |
| 2021 FINA Olympic Marathon Swim Qualifier | June 19–20, 2021 | Setúbal |

### Men's 10 km marathon

| Qualification event | No. of athletes | Qualified athletes |
| 2019 World Championships | 10 | Florian Wellbrock (GER) Marc-Antoine Olivier (FRA) Rob Muffels (GER) Kristóf Rasovszky (HUN) Jordan Wilimovsky (USA) Gregorio Paltrinieri (ITA) Ferry Weertman (NED) Alberto Martínez (ESP) Mario Sanzullo (ITA) David Aubry (FRA) |
| 2020 Olympic Marathon Swim Qualifier | 11 | Hector Pardoe (GBR) Athanasios Kynigakis (GRE) Matan Roditi (ISR) Kai Edwards (AUS) Taishin Minamide (JPN) Tiago Campos (POR) Kirill Abrosimov (ROC) David Farinango (ECU) Oussama Mellouli (TUN) Michael McGlynn (RSA)° Daniel Delgadillo (MEX)^ |
| Continental Qualifier | 4 | Matej Kozubek (CZE) Hau-Li Fan (CAN) Phillip Seidler (NAM) William Yan Thorley (HKG) |
| Host country | 0 | — |
| Total | 25 | |
° Unused host quota place ^ Unused continental quota place
* No eligible athlete from Oceania competed in the men's race at the 2020 Olympic Marathon Swim Qualifier, which meant the top 10 qualified.

### Women's 10 km marathon

| Qualification event | No. of athletes | Qualified athletes |
| 2019 World Championships | 10 | Xin Xin (CHN) Haley Anderson (USA) Rachele Bruni (ITA) Lara Grangeon (FRA) Ana Marcela Cunha (BRA) Ashley Twichell (USA) Kareena Lee (AUS) Finnia Wunram (GER) Leonie Beck (GER) Sharon van Rouwendaal (NED) |
| 2020 Olympic Marathon Swim Qualifier | 10 | Anna Olasz (HUN) Paula Ruiz (ESP) Kate Sanderson (CAN) Alice Dearing (GBR) Angélica André (POR) Cecilia Biagioli (ARG) Anastasiya Kirpichnikova (ROC) Samantha Arévalo (ECU) Špela Perše (SLO) Michelle Weber (RSA)^ |
| Continental Qualifier | 4 | Souad Cherouati (ALG) Paola Pérez (VEN) Krystyna Panchishko (UKR) Chantal Liew (SGP) |
| Host country | 1 | Yumi Kida (JPN) |
| Total | 25 | |
^ Unused continental quota place
* No eligible athlete from Oceania competed in the women's race at the 2020 Olympic Marathon Swim Qualifier, which meant the top 10 qualified.