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Men's 100 metre butterfly at the Games of the XXXIII Olympiad
Venue	Olympic Aquatics Centre, Paris La Défense Arena
Dates	2 August 2024 (Heats and Semis) 3 August 2024 (Final)
Competitors	40 from 31 nations
Winning time	49.90
Medalists
Kristóf Milák  Hungary Joshua Liendo  Canada Ilya Kharun  Canada
← 20202028 →

Swimming at the 2024 Summer Olympics
Qualification
Freestyle
50 m	men		women
100 m	men		women
200 m	men		women
400 m	men		women
800 m	men		women
1500 m	men		women
Backstroke
100 m	men		women
200 m	men		women
Breaststroke
100 m	men		women
200 m	men		women
Butterfly
100 m	men		women
200 m	men		women
Individual medley
200 m	men		women
400 m	men		women
Freestyle relay
4 × 100 m	men		women
4 × 200 m	men		women
Medley relay
4 × 100 m	men	mixed	women
Marathon
10 km	men		women
v t e

The men's 100 metre butterfly event at the 2024 Summer Olympics was held from 2 to 3 August 2024 at the Paris Aquatics Centre.

Records

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

World record	Caeleb Dressel (USA)	49.45	Tokyo, Japan	31 July 2021
Olympic record	Caeleb Dressel (USA)	49.45	Tokyo, Japan	31 July 2021

Qualification

Each National Olympic Committee (NOC) was permitted to enter a maximum of two qualified athletes in each individual event, but only if both of them had attained the Olympic Qualifying Time (OQT). For this event, the OQT was 51.67 seconds. World Aquatics then considered athletes qualifying through universality; NOCs were given one event entry for each gender, which could be used by any athlete regardless of qualification time, providing the spaces had not already been taken by athletes from that nation who had achieved the OQT. Finally, the rest of the spaces were filled by athletes who had met the Olympic Consideration Time (OCT), which was 51.93 for this event. In total, 29 athletes qualified through achieving the OQT, 10 athletes qualified through universality places and one athlete qualified through achieving the OCT.

Competition format

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.

Schedule

All times are Central European Summer Time (UTC+2)

Results

Heats

Results

Rank	Heat	Lane	Swimmer	Nation	Time	Notes
1	3	5	Kristof Milak	Hungary	50.19	Q
2	5	4	Josh Liendo	Canada	50.55	Q
3	3	4	Noe Ponti	Switzerland	50.65	Q
	4	4	Maxime Grousset	France	50.65	Q
5	5	2	Ilya Kharun	Canada	50.71	Q
6	5	5	Caeleb Dressel	United States	50.83	Q
7	4	5	Matthew Temple	Australia	50.89	Q
8	5	3	Nyls Korstanje	Netherlands	51.17	Q
9	4	6	Jakub Majerski	Poland	51.18	Q
10	3	6	Gal Cohen Groumi	Israel	51.30	Q
11	5	1	Ben Armbruster	Australia	51.33	Q
12	5	6	Katsuhiro Matsumoto	Japan	51.43	Q
13	4	7	Simon Bucher	Austria	51.55	Q
14	3	3	Hubert Kós	Hungary	51.58	Q
15	4	1	Naoki Mizunuma	Japan	51.62	Q
	5	7	Clement Secchi	France	51.62	Q
17	3	8	Josif Miladinov	Bulgaria	51.77
18	4	3	Thomas Heilman	United States	51.82
19	2	6	Sun Jiajun	China	51.85
20	3	2	Diogo Ribeiro	Portugal	51.90
21	4	2	Tomer Frankel	Israel	51.94
22	4	8	Kayky Mota	Brazil	52.11
23	5	8	James Guy	Great Britain	52.23
24	2	5	Chad le Clos	South Africa	52.24
25	2	4	Mario Mollà	Spain	52.27
26	3	7	Wang Changhao	China	52.37
27	3	1	Daniel Gracik	Czech Republic	52.61
28	2	3	Kaii Winkler	Germany	52.64
29	2	7	Adilbek Mussin	Kazakhstan	52.74
30	1	2	Nikola Miljenic	Croatia	53.32
31	1	3	Jesse Ssuubi Ssengonzi	Uganda	53.76
32	2	1	Cameron Gray	New Zealand	53.83
33	1	5	Joe Kurniawan	Indonesia	53.95
34	1	4	Milos Milenkovic	Montenegro	54.26
35	2	2	Matthew Sates	South Africa	54.53
36	1	6	Josh Kirlew	Jamaica	54.66
	2	8	Jarod Hatch	Philippines	54.66
38	1	7	Oscar Cyusa Peyre Mitilla	Rwanda	58.77
39	1	1	Hasan Ali Khaleel Al-Zinkee	Iraq	1:00.23
40	1	8	Yusuf Marwan Abdullah Nasser	Yemen	1:08.72

Semifinals

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

Results

Rank	Heat	Lane	Swimmer	Nation	Time	Notes
1	2	4	Kristof Milak	Hungary	50.38	Q
2	1	5	Maxime Grousset	France	50.41	Q
3	1	4	Josh Liendo	Canada	50.42	Q
4	1	6	Nyls Korstanje	Netherlands	50.59	Q, NR
5	2	5	Noe Ponti	Switzerland	50.60	Q
6	2	3	Ilya Kharun	Canada	50.68	Q
7	2	6	Matthew Temple	Australia	50.95	Q
8	2	8	Naoki Mizunuma	Japan	51.08	Q
9	2	7	Ben Armbruster	Australia	51.17
10	2	1	Simon Bucher	Austria	51.35
11	2	2	Jakub Majerski	Poland	51.37
12	1	2	Gal Cohen Groumi	Israel	51.48
13	1	3	Caeleb Dressel	United States	51.57
14	1	8	Clement Secchi	France	51.58
15	1	7	Katsuhiro Matsumoto	Japan	51.69
16	1	1	Hubert Kós	Hungary	52.22

Final

Results

Rank	Lane	Swimmer	Nation	Time	Notes
	4	Kristof Milak	Hungary	49.90
	3	Josh Liendo	Canada	49.99	NR
	7	Ilya Kharun	Canada	50.45
4	2	Noe Ponti	Switzerland	50.55
5	5	Maxime Grousset	France	50.75
6	6	Nyls Korstanje	Netherlands	50.83
7	1	Matthew Temple	Australia	51.10
8	8	Naoki Mizunuma	Japan	51.11

References

1. ^ "Paris 2024 – Swimming Info". World Aquatics. 5 April 2022. Archived from the original on 8 February 2023. Retrieved 12 November 2022.
2. ^ Entries list - Swimming, World Aquatics, archived from the original on 12 July 2024, retrieved 18 December 2024
3. "Results" (PDF). olympics.com. International Olympic Committee. Retrieved 18 December 2024.
4. "Results" (PDF). olympics.com. International Olympic Committee. Retrieved 18 December 2024.
5. "Results" (PDF). olympics.com. International Olympic Committee. Retrieved 18 December 2024.

• Swimming at the 2024 Summer Olympics
• Men's 100 metre butterfly
• Men's events at the 2024 Summer Olympics