Eswatini at the 2020 Summer Olympics

Eswatini 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, due to the COVID-19 pandemic. Previously known as Swaziland, it was the nation's eleventh appearance at the Summer Olympics since its debut in 1972. This was the first Games at which Eswatini competed under the name it assumed in 2018 (after previously competing as "Swaziland").

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

Athletics
Eswatini received a universality slot from the World Athletics to send a male track and field athlete to the Olympics.


 * Key
 * Note–Ranks given for track events are within the athlete's heat only
 * Q = Qualified for the next round
 * q = Qualified for the next round as a fastest loser or, in field events, by position without achieving the qualifying target
 * NR = National record
 * N/A = Round not applicable for the event
 * Bye = Athlete not required to compete in round


 * Track & road events

Boxing
Eswatini received an invitation from the Tripartite Commission to send the men's welterweight boxer Thabiso Dlamini to the Olympics, marking the country's return to the sport for the first time since Sydney 2000.

Swimming
Eswatini 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.