Swimming at the 2020 Summer Olympics – Men's 100 metre butterfly

The men's 100 metre butterfly event at the 2020 Summer Olympics will be held in 2021 at the Tokyo Aquatics Centre.[1] It will be the event's fourteenth consecutive appearance, having been held at every edition since 1968.

Men's 100 metre butterfly
at the Games of the XXXII Olympiad
VenueTokyo Aquatics Centre
← 2016
2024 →


Prior to this competition, the existing world and Olympic records were as follows.

World record   Caeleb Dressel (USA) 49.50 Gwangju, South Korea 26 July 2019 [2]
Olympic record   Joseph Schooling (SIN) 50.39 Rio de Janeiro, Brazil 12 August 2016 [3][4]


The Olympic Qualifying Time for the event is 51.96 seconds. Up to two swimmers per National Olympic Committee (NOC) can automatically qualify by swimming that time at an approved qualification event. The Olympic Selection Time is 53.52 seconds. Up to one swimmer per NOC meeting that time is eligible for selection, allocated by world ranking until the maximum quota for all swimming events is reached. NOCs without a male swimmer qualified in any event can also use their universality place.[5]

Competition formatEdit

The competition consists of three rounds: heats, semifinals, and a final. The swimmers with the best 16 times in the heats advance to the semifinals. The swimmers with the best 8 times in the semifinals advance to the final. Swim-offs are used as necessary to break ties for advancement to the next round.[6]


All times are Japan standard time (UTC+9)[1]

Date Time Round
TBC 19:00 Heats
TBC 10:30 Semifinals
TBC 10:30 Final



The swimmers with the top 16 times, regardless of heat, advance to the semifinals.


The swimmers with the best 8 times, regardless of heat, advanced to the final.



  1. ^ a b "Tokyo 2020: Swimming Schedule". Tokyo 2020. Retrieved 30 January 2020.
  2. ^ Carlson, Reid (26 July 2019). "Caeleb Dressel Breaks Phelps' Elusive 100 Butterfly World Record in 49.50". SwimSwam. Retrieved 1 February 2020.
  3. ^ Pentony, Luke (12 August 2016). "Rio 2016: Joseph Schooling gives Singapore its first ever Olympic gold medal". ABC News Australia. Retrieved 4 September 2016.
  4. ^ Goh, Brenda (12 August 2016). "Stunning Phelps, Schooling wins Singapore's first gold". Reuters. Retrieved 4 September 2016.
  5. ^ "Tokyo 2020 – FINA Swimming Qualification System" (PDF). Tokyo 2020. FINA. Retrieved 29 January 2020.
  6. ^ "FINA Swimming Rulebook, 2017–21" (PDF). FINA. Retrieved 29 January 2020.