The men's 50 metre butterfly event at the 2025 World Aquatics Championships was held from 27 to 28 July 2025 at the World Aquatics Championships Arena at the Singapore Sports Hub in Kallang, Singapore.
Background Switzerland’s Noè Ponti was the top seed with a best of 22.65 from April 2024. Ponti had set multiple short course world records in late 2024 and had recorded most of his fastest long course times in 2025. Canada’s Ilya Kharun was seeded second after lowering his best to 22.68 at the Canadian Trials in June, while France’s Maxime Grousset held the third seed with 22.70 from the French Trials. Other top seeds included Nyls Korstanje of the Netherlands (22.72), Abdelrahman Sameh of Egypt (22.80), and Luca Armbruster of Germany (22.92). Defending world champion Thomas Ceccon of Italy was seeded 10th with 23.00. Former world champion Ben Proud of Great Britain and Dylan Carter of Trinidad and Tobago were also entered.
Qualification Each National Federation was permitted to enter a maximum of two qualified athletes in each individual event, but they could do so only if both of them had attained the "A" standard qualification time. For this event, the "A" standard qualification time was 23.36. Federations could enter one athlete into the event if they met the "B" standard qualification time. For this event, the "B" standard qualification time was 24.18. Athletes could also enter the event if they had met an "A" or "B" standard in a different event and their Federation had not entered anyone else. Additional considerations applied to Federations who had few swimmers enter through the standard qualification times. Federations in this category could at least enter two men and two women to the competition, all of whom could enter into up to two events. +Top 10 fastest qualification timesSwimmerCountryTimeCompetitionNoè Ponti22.652024 Swiss ChampionshipsIlya Kharun22.682025 Canadian TrialsMaxime Grousset22.702025 French EliteNyls Korstanje22.722025 AP Race London InternationalAbdelrahman Sameh22.80Monaco stop of the 2025 Mare Nostrum Swim TourOleg Kostin22.85Monaco stop of the 2025 Mare Nostrum Swim TourFlorent Manaudou22.872024 French EliteKyle Chalmers22.892025 Malmsten Swim Open StockholmLuca Armbruster22.922025 German ChampionshipsDylan Carter22.932025 Trinidad and Tobago Championships
Records Prior to the competition, the existing world and championship records were as follows.
Heats The heats took place on 27 July at 11:11.
Rank Heat Lane Name Nationality Time Notes 1 9 4 Maxime Grousset 22.74 Q 1 11 4 Noè Ponti 22.74 Q 3 10 4 Ilya Kharun 22.85 Q 4 11 7 Diogo Ribeiro 22.90 Q 5 11 5 Nyls Korstanje 22.96 Q 5 11 8 Ben Proud 22.96 Q 7 9 6 Stergios Bilas 23.04 Q, NR 8 11 6 Thomas Ceccon 23.06 Q 9 9 8 Joshua Liendo 23.16 Q 10 9 1 Simon Bucher 23.20 Q 10 11 2 Dare Rose 23.20 Q 12 9 7 Sean Niewold 23.21 Q 12 10 5 Abdelrahman Sameh 23.21 Q 12 9 3 Guilherme Caribé 23.21 Q 15 10 8 Michael Andrew 23.22 Q 16 11 3 Luca Armbruster 23.28 Q 17 10 1 Szebasztián Szabó 23.29 18 10 9 Adilbek Mussin 23.33 NR 19 9 5 Oleg Kostin Neutral Athletes B 23.34 19 10 0 Katsuhiro Matsumoto 23.34 21 10 3 Dylan Carter 23.36 22 11 0 Teong Tzen Wei 23.38 23 9 9 Jesse Coleman 23.40 24 11 1 Grigori Pekarski Neutral Athletes A 23.42 25 11 9 Kacper Czapla 23.44 25 9 2 Egor Iurchenko Neutral Athletes B 23.44 25 8 3 Daniel Zaitsev 23.44 28 10 7 Shane Ryan 23.46 29 10 6 Meiron Cheruti 23.51 30 8 1 Ji Yu-chan 23.57 31 10 2 Taikan Tanaka 23.58 32 8 4 Eldor Usmonov 23.62 33 8 6 Casper Puggaard 23.65 34 8 5 Denis Popescu 23.66 35 8 8 Mikel Schreuders 23.80 36 9 0 Nikola Miljenić 23.87 37 8 2 Ulises Cazau 23.88 37 7 4 Miloš Milenković 23.88 39 7 5 Oscar Peyre Mitilla 24.06 40 8 0 Alex Santiago 24.11 40 7 3 David Young 24.11 42 7 7 Julien Henx 24.12 43 8 7 Tajus Juska 24.13 44 7 8 Lin Yuchen 24.19 45 7 0 Benedicton Rohit 24.26 46 8 9 Jorge Otaiza 24.27 47 7 6 Birnir Freyr Hálfdánarson 24.29 48 5 6 Jesse Ssengonzi 24.32 NR 49 6 5 Colins Ebingha 24.45 50 7 9 Abeiku Jackson 24.49 51 6 4 Matthieu Seye 24.54 52 7 2 Emre Sakçı 24.62 53 6 6 Grisi Koxhaku 24.84 53 5 3 Adam Moncherry 24.84 55 6 1 Josh Kirlew 24.95 56 6 9 Julio César Rodríguez 25.08 57 5 2 Yousif Bu Arish 25.15 57 6 8 Johann Stickland 25.15 59 6 7 Charles Hockin 25.17 60 5 4 Matthew Lawrence 25.28 61 6 2 Nika Tchitchiashvili 25.29 62 2 1 Jeno Heyns 25.46 63 4 3 Damien Shamambo 25.50 64 5 7 Christien Kelly 25.51 65 5 1 Finau Ohuafi 25.53 66 5 0 Lam Chi Chong 25.59 67 5 5 Joash McKonie 25.63 68 6 3 Jefferson Kpanou 25.64 69 4 5 David Akopyan 25.66 70 4 4 Matin Balsini 25.69 70 6 0 Dulyawat Kaewsriyong 25.69 72 1 3 Aaron Ghebre Owusu 25.76 73 5 8 Stephen Nyoike 26.01 74 4 6 Belly-Cresus Ganira 26.03 75 4 8 Nathaniel Noka 26.06 76 2 6 Salem Sabt 26.25 77 1 4 Ajal Kaji Tamrakar 26.49 78 2 3 Naeem DeSouza 26.52 79 3 1 Kazuumi Nestor 26.56 NR 79 5 9 Francky Ramiakatrarivo 26.56 81 4 7 Katerson Moya 26.67 NR 82 4 1 Tsui Yik Ki 26.71 83 2 7 Mohammed Al-Wahaibi 26.76 84 4 2 Houmed Houssein Barkat 27.25 85 4 0 Nigel Fontenelle 27.58 86 2 8 Michael Miller 27.64 87 3 3 Fodé Camara 28.17 NR 88 2 2 Michael Joseph 28.37 89 4 9 Kinley Lhendup 28.53 90 2 5 Ryuto Saysanavongphet 28.67 91 3 5 Asher Banda 28.71 92 3 9 Leo Lebot 29.28 NR 93 3 0 Yusuf Nasser 29.89 94 3 2 Hadji Hassane 30.22 95 2 0 Ben Lassina Traoré 30.34 96 1 5 Jacob Mugisha 30.38 97 3 6 Charly Ndjoume 30.95 — 3 4 Ousman Jobe Did not start 7 1 Bryan Leong 2 4 Higinio Ndong Obama 3 7 Moses Yongai 3 8 Magnim Jordano Daou Disqualified
Semifinals The semifinals took place on 27 July at 19:23.
Rank Heat Lane Name Nationality Time Notes 1 2 4 Maxime Grousset 22.61 Q, NR 2 1 4 Noè Ponti 22.72 Q 3 1 3 Ben Proud 22.74 Q, NR 4 2 3 Nyls Korstanje 22.79 Q 5 1 5 Diogo Ribeiro 22.83 Q 6 1 6 Thomas Ceccon 22.84 Q 7 1 7 Guilherme Caribé 22.91 Q 7 1 8 Luca Armbruster 22.91 Q, NR 9 2 5 Ilya Kharun 22.92 10 1 2 Simon Bucher 22.95 NR 11 2 6 Stergios Bilas 23.00 NR 12 2 7 Dare Rose 23.02 13 2 2 Joshua Liendo 23.11 14 1 1 Abdelrahman Sameh 23.12 15 2 1 Sean Niewold 23.17 16 2 8 Michael Andrew 23.23
Final The final took place on 28 July at 19:45.
Rank Lane Name Nationality Time Notes 4 Maxime Grousset 22.48 NR 5 Noè Ponti 22.51 NR 7 Thomas Ceccon 22.67 NR 4 2 Diogo Ribeiro 22.77 NR 5 3 Ben Proud 22.79 6 6 Nyls Korstanje 22.84 6 8 Luca Armbruster 22.84 NR 8 1 Guilherme Caribé 22.92
References