Luxembourg 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.^[1] Since the nation's official debut in 1900, Luxembourg athletes have appeared in every edition of the Summer Olympic Games, with the exception of the 1904 and 1908 Summer Olympics, and the 1932 Summer Olympics in Los Angeles at the period of the worldwide Great Depression.

The following is the list of number of competitors in the Games.

Luxembourg archers booked Olympic places in the men’s individual recurve based on the world ranking.

More information Athlete, Event ...

Athlete	Event	Ranking round		Round of 64	Round of 32	Round of 16	Quarterfinals	Semifinals	Final / BM
		Score	Seed	Opposition Score	Opposition Score	Opposition Score	Opposition Score	Opposition Score	Opposition Score	Rank
Jeff Henckels	Men's individual	646	55	Gazoz (TUR) L 0–6	Did not advance

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Luxembourgian athletes 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):^[2][3]

Track & road events

Field events

Luxembourg entered one dressage rider into the Olympic equestrian competition, by finishing in the top two, outside the group selection, of the individual FEI Olympic Rankings for Group B (South Western Europe), marking the country's debut in the sport.^[5]

Luxembourgian swimmers further achieved qualifying standards in the following events (up to a maximum of 2 swimmers in each event at the Olympic Qualifying Time (OQT), and potentially 1 at the Olympic Selection Time (OST)):^[6][7]

Luxembourg entered two athletes into the table tennis competition at the Games. Going to her sixth straight Olympics, Ni Xialian secured one of three available spots in the women's singles with a bronze medal victory at the 2019 European Games in Minsk, Belarus.^[8] Meanwhile, Sarah de Nutte was automatically selected among the top ten table tennis players vying for qualification to join Ni Xialian in the same event based on the ITTF Olympic Rankings of June 1, 2021.^[9]

More information Athlete, Event ...

Athlete	Event	Preliminary	Round 1	Round 2	Round 3	Round of 16	Quarterfinals	Semifinals	Final / BM
		Opposition Result	Opposition Result	Opposition Result	Opposition Result	Opposition Result	Opposition Result	Opposition Result	Opposition Result	Rank
Sarah de Nutte	Women's singles	Bye	Trifonova (BUL) L 3–4	Did not advance
Ni Xialian		Bye		Shin Y-b (KOR) L 3–4	Did not advance

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Luxembourg qualified a single triathlete via the Individual World Rankings, signifying the nation's Olympic return to the sport for the first time since Beijing 2008.