Thailand competed at the 2020 Summer Olympics in Tokyo. Originally scheduled to take place from 24 July to 9 August 2020, the Games were postponed to 23 July to 8 August 2021, because of the COVID-19 pandemic. Since the nation's official debut in 1952, Thai athletes have appeared in every edition of the Summer Olympic Games, with the exception of the 1980 Summer Olympics in Moscow, because of its partial support of the US-led boycott.
Medalists
Competitors
The following is the list of number of competitors in the Games.
Athletics
Thai athletes further achieved the entry standards, either by qualifying time or by world ranking, in the following track and field events (up to a maximum of 3 athletes in each event):
Track & road events
Field events
Badminton
Thailand entered seven badminton players for each of the following events into the Olympic tournament based on the BWF Race to Tokyo Rankings.
Men
Women
Mixed
Boxing
Thailand entered five boxers (two men and three women) into the Olympic tournament. 2018 Asian Games and world silver medalist Sudaporn Seesondee (women's lightweight) and teenagers Thitisan Panmot (men's flyweight) and Baison Manikon (women's welterweight), with men's featherweight boxer Chatchai Butdee going to his third consecutive Games, secured the spots on the Thai squad in their respective weight divisions, either by advancing to the semifinal match or by scoring a box-off triumph, at the 2020 Asia & Oceania Qualification Tournament in Amman, Jordan. Meanwhile, Jutmas Jitpong completed the nation's boxing lineup by topping the list of eligible boxers from Asia and Oceania in the women's flyweight division of the IOC's Boxing Task Force Rankings.
Canoeing
Sprint
Thailand qualified a single boat (women's C-1 200 m) for the Games by winning the gold medal at the 2021 Asian Canoe Sprint Qualification Regatta in Pattaya, marking the country's debut in the sporting discipline.
Qualification Legend: FA = Qualify to final (medal); FB = Qualify to final B (non-medal)
Cycling
Road
Thailand entered one rider to compete in the women's Olympic road race, by virtue of her top 100 individual finish (for women) in the UCI World Ranking.
BMX
Thailand received one quota spot for women's BMX race at the Olympics, as a result of the UCI BMX Olympic Qualification List.
Equestrian
Thailand fielded a squad of three equestrian riders for the first time into the Olympic team eventing competition by securing an outright berth as one of two top-ranked nations, not yet qualified, at the International Equestrian Federation (FEI)-designated Olympic qualifier for Group F and G (Africa, Middle East, Asia and Oceania) in Saumur, France.
Eventing
The Thai eventing team was announced on May 30, 2021.
Golf
Thailand entered four (two male and two female) golfers into the Olympic tournament. Jazz Janewattananond and Gunn Charoenkul qualified directly among the top 60 eligible players for the men's event. Patty Tavatanakit and Ariya Jutanugarn also qualified for the women's event.
Judo
Thailand entered one female judoka into the Olympic tournament based on the International Judo Federation Olympics Individual Ranking.
Rowing
Thailand qualified one boat in the men's lightweight double sculls for the Games by finishing second at the B-final and securing the last of three berths available at the 2021 FISA Asia & Oceania Olympic Qualification Regatta in Tokyo, Japan.
Qualification Legend: FA=Final A (medal); FB=Final B (non-medal); FC=Final C (non-medal); FD=Final D (non-medal); FE=Final E (non-medal); FF=Final F (non-medal); SA/B=Semifinals A/B; SC/D=Semifinals C/D; SE/F=Semifinals E/F; QF=Quarterfinals; R=Repechage
Sailing
Thai sailors qualified one boat in each of the following classes through the class-associated World Championships, and the continental regattas.
M = Medal race; EL = Eliminated – did not advance into the medal race
Shooting
Thai shooters achieved quota places for the following events by virtue of their best finishes at the 2018 ISSF World Championships, the 2019 ISSF World Cup series, and Asian Championships, as long as they obtained a minimum qualifying score (MQS) by May 31, 2020.
Swimming
Thailand received a universality invitation from FINA to send two top-ranked swimmers (one per gender) in their respective individual events to the Olympics, based on the FINA Points System of June 28, 2021.