Boxing at the 2020 Summer Olympics – Men's flyweight

This was the 24th appearance of the men's flyweight event. The event appeared at the first Olympic boxing tournament in 1904, was not held in 1908, and then has been held at every Games with boxing since (1920 through 2020). The 2020 tournament was the first since 1964 that flyweight is the lightest men's weight class; the men's light flyweight class was eliminated after 2016 as the sport moved toward gender equality. The weight range for the class was changed from 49–52 kg to 48–52 kg.

Reigning Olympic champion and World Champion Shakhobidin Zoirov of Uzbekistan had qualified to make an Olympic title defense in Tokyo. Zoirov is a professional and has a 3–0 record.

A National Olympic Committee (NOC) could enter only 1 qualified boxer in the weight class. There were 28 quota places available for the men's flyweight, allocated as follows:^[2]

• 1 place for the host nation, Japan.
• 3 places at the 2020 African Boxing Olympic Qualification Tournament.
• 6 places at the 2020 Asia & Oceania Boxing Olympic Qualification Tournament.
• 8 places at the 2020 European Boxing Olympic Qualification Tournament.
• 5 places that were intended to be awarded at the 2021 Pan American Boxing Olympic Qualification Tournament, which was cancelled. These places were instead awarded through the world ranking list to the top boxers from the Americas who had been registered for the qualification tournament.
• 4 places that were intended to be awarded at a World Olympic Qualifying Tournament, which was cancelled. These places were instead awarded through the world ranking list, with one place for each continental zone (Africa, Asia & Oceania, Europe, Americas).
• 1 place for a Tripartite Commission invitation.

Thitisan Panmod from Thailand withdrew before the competition.^[3]

Like all Olympic boxing events, the competition is a straight single-elimination tournament. The competition begins with a preliminary round, where the number of competitors is reduced to 16, and concludes with a final. As there are fewer than 32 boxers in the competition, a number of boxers will receive a bye through the preliminary round. Both semi-final losers are awarded bronze medals.

Bouts consist of three three-minute rounds with a one-minute break between rounds. A boxer may win by knockout or by points. Scoring is on the "10-point-must," with 5 judges scoring each round. Judges consider "number of blows landed on the target areas, domination of the bout, technique and tactical superiority and competitiveness." Each judge determines a winner for each round, who receives 10 points for the round, and assigns the round's loser a number of points between 7 and 9 based on performance. The judge's scores for each round are added to give a total score for that judge. The boxer with the higher score from a majority of the judges is the winner.^[4]

The flyweight starts with the round of 32 on 26 July. There are four rest days before the round of 16 on 31 July and two more rest days before the quarterfinals on 3 August. After that, there is only one rest day between rounds with the semifinals on 5 August and the final on 7 August.^[1][5]