Qualification for tennis at the 2020 Summer Olympics in Tokyo, Japan was determined primarily by the rankings maintained by the Association of Tennis Professionals (ATP) and the Women's Tennis Association (WTA).

Qualifying criteria The main qualifying criterion will be players' positions on the ATP and WTA ranking lists published on 14 June 2021 (after 2021 French Open). The players entering were formally submitted by the International Tennis Federation. The ATP and WTA rankings were based on performances from the previous 52 weeks, and there were several tournaments in the two-month period between the time of the rankings being frozen for entry and the beginning of the tennis events at the Olympics. Players had to be part of a nominated team for three Billie Jean King Cup (women) or Davis Cup (men) events between the 2016 and 2020 Olympics. This requirement was reduced to two Fed/Davis Cup events during the Olympic cycle from 2016 to 2020 if their nation competed at the Zone Group round robin level for three of the four years or if the player had represented their nation at least twenty times. All players were required to have been part of a nominated team for a Fed/Davis Cup event in 2019 or 2020, and to have had a good standing with their National Olympic Committee.

Each National Olympic Committee (NOC) could enter 6 male and 6 female athletes, with a maximum of 4 entries in the individual events, and 2 pairs in the doubles events. A total of 172 athletes will qualify to compete.

For the singles competitions, the top 56 players in the world rankings on a later date to be announced of the WTA and ATP tours are qualified for the Olympics. However, entry has been limited to four players from a country. This means that players who are ranked in the top 56 but represent the NOCs with four higher-ranked players already participating do not qualify, allowing players who are ranked outside of the top 56 but from countries with fewer than four players already qualified to compete. A player could only participate if they been part of a final nominated team to represent their country in Davis Cup or Billie Jean King Cup (formerly known as Fed Cup) ties on three occasions during the olympic cycle, with one of the years featuring a nomination being either 2019 or 2020–21. The required nominations was reduced to two if the player represented a nation spending at least three of the four seasons in the Olympic cycle on the zonal level of the relevant Cup or had been nominated for at least 20 ties during their career. Six of the remaining eight slots will be allocated by continent: two in the 2019 Pan American Games, one in the 2018 Asian Games, one in the 2019 African Games, and one each for Europe and Oceania for the highest-ranked athlete from an NOC with no other qualifiers. The final two spots are reserved, one for the host nation and one for a previous Olympic gold medalist or Grand Slam champion who didn't secure a direct entry.

In the men's and women's doubles competitions, 32 teams qualify. Up to 10 places are reserved for players in the top 10 of the doubles ranking, who could select any player from their NOC ranked in the top 300. Slots were then allocated to teams with the best combined ranking until 24 teams had been qualified. If the quota of 86 players in the relevant gender had not yet been met, additional places continued to be allotted via combined ranking. Once the quota was met, remaining teams with both players qualified in the singles were selected based on their best combined ranking. If this resulted in fewer than 32 teams, additional places were assigned to teams with one player qualified in singles, followed by remaining teams without any singles-qualified players if necessary. One team per gender was reserved for the host nation.

No quota spots are available for mixed doubles; instead, all teams have to consist of players already on site having qualified in the singles or doubles. Fifteen teams, based on combined ranking, and the host nation qualified.

Qualified players aPlayer did not participate as a result of injury, chose not to compete or was not selected by their governing bodybPlayer has not met the minimum Fed Cup / Davis Cup representation levelcPlayer is ineligible due quota limitations on athletes form a single countrydPlayer has retired from the sportePlayer received special dispensation for the Davis Cup / Fed Cup requirements from the ITF

Men's singles

No.RankPlayerNOCATP PointsNOC RankWorld Ranking1 1 Novak Djokovic 12,113 1 2 2 Daniil Medvedev 10,143 1 a 3 Rafael Nadal 8,630 – 3 4 Stefanos Tsitsipas 7,980 1 a 5 Dominic Thiem 7,425 – 4 6 Alexander Zverev 7,350 1 5 7 Andrey Rublev 5,910 2 a 8 Roger Federer 5,065 – a 9 Matteo Berrettini 4,103 – a 10 Roberto Bautista Agut 3,170 – 6 11 Diego Schwartzman 3,105 1 7 12 Pablo Carreño Busta 2,905 1 a 13 David Goffin 2,830 –a 14 Denis Shapovalov 2,780 – a 15 Casper Ruud 2,690 – 8 16 Gaël Monfils 2,568 1 9 17 Hubert Hurkacz 2,533 1 a 18 Milos Raonic 2,473 – a 19 Cristian Garín 2,440 – b 20 Grigor Dimitrov 2,431 –10 21 Félix Auger-Aliassime 2,423 1 a 22 Alex de Minaur 2,350 – a 23 Jannik Sinner 2,320 – 11e 24 Aslan Karatsev 2,274 3 a 25 Daniel Evans 2,106 –12 26 Lorenzo Sonego 2,042 1 13 27 Karen Khachanov 2,010 4 a 28 Stan Wawrinka 1,966 – 14 29 Fabio Fognini 1,843 2 15 30 Nikoloz Basilashvili 1,820 1 16 31 Ugo Humbert 1,815 2 a 32 Reilly Opelka 1,806 – a 33 John Isner 1,775 – a 34 Borna Ćorić 1,758 – 17 35 Alejandro Davidovich Fokina 1,723 2 a 36 Taylor Fritz 1,715 – 18 37 Marin Čilić 1,615 1 a 38 Albert Ramos Viñolas 1,595 – 19 39 Alexander Bublik 1,591 1 a 40 Dušan Lajović 1,540 – a 41 Cameron Norrie 1,510 – a 42 Adrian Mannarino 1,501 – 20 43 John Millman 1,496 1a 44 Filip Krajinović 1,479 – 21 45 Jan-Lennard Struff 1,455 2 a 46 Benoît Paire 1,387 – 22 47 Miomir Kecmanović 1,384 2a 48 Federico Delbonis 1,360 – 23 49 Márton Fucsovics 1,344 1 24e 50 Tommy Paul 1,225 1 a 51 Lloyd Harris 1,198 – b 52 Sebastian Korda 1,187 – 25 53 Dominik Koepfer 1,170 3 a 54 Richard Gasquet 1,168 – a 55 Laslo Đere 1,168 – 26 56 Yoshihito Nishioka 1,142 1 27 57 Kei Nishikori 1,138 2 a 58 Nick Kyrgios 1,135 – 28 59 Jérémy Chardy 1,133 3 b 60 Aljaž Bedene 1,121 – 29e 61 Lorenzo Musetti 1,120 3a 62 Guido Pella 1,114 – a 63 Sam Querrey 1,113 – a 64 Feliciano López 1,080 – 30 65 Frances Tiafoe 1,078 2 a 66 Vasek Pospisil 1,033 – a 67 Alexei Popyrin 1,030 – 31e 68 Tennys Sandgren 1,011 3 b 69 Jaume Munar 1,009 – 32e 70 Pablo Andújar 1,005 3 33 71 Gilles Simon 973 4 34 71PR(624) Lu Yen-hsun 45 1a 72 Steve Johnson 958 – a 73 Jiří Veselý 954 – a 74 Emil Ruusuvuori 951 – 35e 75 Marcos Giron 945 4 36 76 Egor Gerasimov 937 1 a 77 Kyle Edmund 935 – b 78 Carlos Alcaraz 924 – 37 79 Kwon Soon-woo 921 1 c 80 Jo-Wilfried Tsonga 902 – a 81 Jordan Thompson 900 – c 82 Gianluca Mager 893 – 38 83 Thiago Monteiro 891 1 a 84 Ričardas Berankis 884 – a 85 Pablo Cuevas 881 – bc 86 Marco Cecchinato 878 – c 87 Pierre-Hugues Herbert 875 – c 88 Stefano Travaglia 870 – 39 89 Norbert Gombos 867 1 40 90 Ilya Ivashka 855 2 c 91 Andreas Seppi 854 – 41 92 James Duckworth 851 2a 93 Radu Albot 848 – bc 94 Corentin Moutet 838 – c 95 Lucas Pouille 835 – 42 96 Facundo Bagnis 828 2 43 96PR(128) Philipp Kohlschreiber 617 4 bc 97 Salvatore Caruso 814 – a 98 Mikael Ymer 796 –bc 99 Yannick Hanfmann 793 – 44e 100 Roberto Carballés Baena 786 4 b 101 Kevin Anderson 775 – c 102 Fernando Verdasco 760 – 45e 103 Federico Coria 755 3 46 104 Taro Daniel 751 3 47 105 Mikhail Kukushkin 740 2 bc 106 Pedro Martínez 736 – 48 107 Yūichi Sugita 730 4 49 108 Pedro Sousa 718 1 50 109 João Sousa 714 2 a 110 Dennis Novak 714 – 51 111 Daniel Elahi Galán 711 152 112 Kamil Majchrzak 706 2a 113 Attila Balázs 703 –c 114 Mackenzie McDonald 700 –a 115 Andrej Martin 698 –bc 116 Yasutaka Uchiyama 697 –53 117 Francisco Cerúndolo 694 4 c 118 Denis Kudla 683 –bc 119 Arthur Rinderknech 677 –a 120 Tallon Griekspoor 673 –bc 121 Benjamin Bonzi 658 –bc 122 Bernabé Zapata Miralles 649 –a 123 Thiago Seyboth Wild 643 –54 124 Andy Murray6401a 125 Damir Džumhur 638 – a 126 Jozef Kovalík 638 –bc 127 Juan Ignacio Londero 636 – 55 129 Hugo Dellien 610 1bc 130 Grégoire Barrère 609 – b 131 Christopher O'Connell 609 – c 132 Peter Gojowczyk 608 – 56 133 Juan Pablo Varillas 599 1bc 134 Carlos Taberner 582 – a 135 Jurij Rodionov 579 – bc 136 Cedrik-Marcel Stebe 570 – a 137 Henri Laaksonen 552 – bc 138 Brandon Nakashima 549 – a 139 Botic van de Zandschulp 540 – c 140 Evgeny Donskoy 537 – c 141 Juan Manuel Cerúndolo 532 – bc 142 Federico Gaio 523 – bc 143 J. J. Wolf 512 – 57 144 Sumit Nagal 511 1Eu1 145 Tomáš Macháč 507 158 146 Liam Broady 499 2Continental places Eu1 145 Tomáš MacháčSee World Ranking above Af1 165 Mohamed Safwat 431 1 As1 187 Denis Istomin 371 1 Am1 206 João Menezes 333 2 Am2 232 Tomás Barrios 293 1 Oc1 908 Ajeet Rai 16 – Legacy gold medalist / Grand Slam Champion L1 Reallocated to direct entry Other entries59 254 Lukáš Klein 241 2Host Nation H1 Reallocated to direct entry

Women's singles