The men's 200 metre butterfly event at the 2025 World Aquatics Championships was held from 29 to 30 July 2025 at the World Aquatics Championships Arena at the Singapore Sports Hub in Kallang, Singapore.

Background France’s Léon Marchand, the 2024 Olympic champion, and Hungary's Kristóf Milák, the world record holder, both withdrew from the event in the lead-up to the championships. The United States’ Luca Urlando, who had the fastest qualifying time among entrants, was in contention for gold after finishing 17th at the Olympics. Canada’s Ilya Kharun, the Olympic bronze medalist, was seeded second out of the competing qualifiers. Other podium threats included Poland’s Krzysztof Chmielewski, fourth at the Olympics with 1:53.90, and Japan’s Genki Terakado, ranked sixth worldwide in 2025 with 1:54.73.

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 1:56.51. 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 2:00.59. 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 timesSwimmerCountryTimeCompetitionLuca Urlando1:52.372025 TYR Pro Swim Series (Sacramento)Ilya Kharun1:52.802024 Summer OlympicsCarson Foster1:53.702025 United States ChampionshipsKrzysztof Chmielewski1:53.902024 Summer OlympicsGenki Terakado1:54.072024 Japanese ChampionshipsMartin Espernberger1:54.172024 Summer OlympicsAlberto Razzetti1:54.512024 Summer OlympicsMichal Chmielewski1:54.642024 Summer OlympicsFederico Burdisso1:54.762025 Sette Colli TrophyHarrison Turner1:54.902025 Australian Trials

Records Prior to the competition, the existing world and championship records were as follows.

Heats The heats took place on 29 July at 10:47.

RankHeatLaneSwimmerNationTimeNotes 1 4 4 Luca Urlando 1:52.71 Q 2 4 5 Krzysztof Chmielewski 1:52.89 Q, NR 3 3 4 Ilya Kharun 1:53.74 Q 4 4 2 Chen Juner 1:54.54 Q 4 4 3 Alberto Razzetti 1:54.54 Q 6 3 5 Genki Terakado 1:54.64 Q 7 3 3 Michał Chmielewski 1:54.68 Q 8 4 6 Harrison Turner 1:54.74 Q 9 3 2 So Ogata 1:55.37 Q 10 2 5 Martin Espernberger 1:55.45 Q 11 4 7 Richárd Márton 1:55.51 Q 12 2 4 Carson Foster 1:55.68 Q 13 2 3 Federico Burdisso 1:56.08 Q 14 3 7 Edward Mildred 1:56.17 Q 15 3 6 Kim Min-seop 1:56.34 Q 16 2 1 Lewis Clareburt 1:56.35 Q 17 2 2 Arbidel González 1:56.48 18 3 1 Denys Kesil 1:56.51 19 2 6 Xu Fang 1:56.99 20 3 8 Jack Cassin 1:57.08 21 4 0 Casper Puggaard 1:58.58 22 3 0 Marius Toscan 1:58.60 23 3 9 Erick Gordillo 1:59.23 24 4 9 Sajan Prakash 1:59.33 25 2 7 Petar Mitsin 1:59.37 26 4 8 Samuel Kostal 1:59.42 27 1 5 Raekwon Jibril Noel 1:59.89 NR 28 2 8 Héctor Ruvalcaba 2:01.66 29 2 0 Ramil Valizada 2:02.14 30 1 6 Xavier Ventura 2:02.86 31 1 4 Belhassen Ben Miled 2:03.17 32 1 3 Isak Brisenfeldt 2:04.17 33 1 1 Victor Ah Yong 2:07.95 34 2 9 Navaphat Wongcharoen 2:08.24 35 1 2 Mohammad Al-Otaibi 2:11.76 36 1 7 Mohamed Rihan Shiham 2:25.20 NR 4 1 Apostolos Siskos Disqualified

Semifinals The semifinals took place on 29 July at 20:30.

RankHeatLaneSwimmerNationTimeNotes 1 2 4 Luca Urlando 1:52.84 Q 2 1 4 Krzysztof Chmielewski 1:53.61 Q 3 1 5 Chen Juner 1:54.02 Q, NR 4 1 7 Carson Foster 1:54.30 Q 5 2 5 Ilya Kharun 1:54.43 Q 6 2 3 Alberto Razzetti 1:54.47 Q 7 2 1 Federico Burdisso 1:54.87 Q 8 1 6 Harrison Turner 1:54.94 Q 9 1 2 Martin Espernberger 1:55.18 10 1 8 Lewis Clareburt 1:55.24 11 1 3 Genki Terakado 1:55.30 11 2 6 Michał Chmielewski 1:55.30 12 2 2 So Ogata 1:55.42 14 2 7 Richárd Márton 1:55.80 15 1 1 Edward Mildred 1:56.13 16 2 8 Kim Min-seop 1:57.35

Final The final took place on 30 July at 19:54.

Rank Lane Name Nationality Time Notes 4 Luca Urlando 1:51.87 5 Krzysztof Chmielewski 1:52.64 NR 8 Harrison Turner 1:54.17 NR 4 2 Ilya Kharun 1:54.34 5 6 Carson Foster 1:54.62 6 7 Alberto Razzetti 1:54.85 7 3 Chen Juner 1:55.25 8 1 Federico Burdisso 1:55.27

Notes

References