The men's 50 metre breaststroke competition at the 2023 World Aquatics Championships was held on 25 and 26 July 2023.

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

Results Heats The heats were started on 25 July at 10:32.

Rank Heat Lane Name Nationality Time Notes 1 6 5 Qin Haiyang 26.34 Q, AS 2 7 4 Nicolò Martinenghi 26.64 Q 3 5 4 Sun Jiajun 26.76 Q 3 6 3 Samuel Williamson 26.76 Q 5 7 5 João Gomes Júnior 26.81 Q 6 6 4 Nic Fink 26.91 Q 7 5 3 Lucas Matzerath 26.94 Q 8 5 5 Simone Cerasuolo 27.06 Q 9 7 3 Bernhard Reitshammer 27.11 Q 10 5 2 Caspar Corbeau 27.15 Q 11 7 7 Peter John Stevens 27.20 Q 12 7 1 Arkadios Aspougalis 27.23 Q 13 7 2 Emre Sakçı 27.28 Q 14 7 6 Michael Houlie 27.31 Q 15 6 6 Yuya Hinomoto 27.35 Q 16 5 6 Valentin Bayer 27.36 Q 17 6 1 Miguel de Lara 27.38 NR 18 6 8 Mikel Schreuders 27.47 19 6 7 Choi Dong-yeol 27.48 19 7 0 Denis Petrashov 27.48 21 5 1 James Dergousoff 27.53 22 4 5 Darragh Greene 27.54 23 6 0 Joshua Gilbert 27.59 24 7 8 Jorge Murillo 27.71 25 7 9 Maksym Ovchinnikov 27.78 26 5 0 Youssef El-Kamash 27.80 27 4 1 Chao Man Hou 27.84 28 5 7 Andrius Šidlauskas 27.98 29 6 2 Olli Kokko 27.99 30 4 2 Nicholas Lia 28.09 30 4 3 Jadon Wuilliez 28.09 NR 32 5 8 Ronan Wantenaar 28.24 33 3 4 Mariano Lazzerini 28.44 34 4 6 Maximillian Wei Ang 28.51 35 4 4 Panayiotis Panaretos 28.55 36 4 8 Adrian Robinson 28.67 37 5 9 Andrew Goh 28.75 38 4 0 Andres Martijena 28.86 39 6 9 Muhammad Dwiky Raharjo 28.89 40 3 3 Tasi Limtiaco 28.95 41 3 9 Julio Calero Suarez 28.97 42 4 9 Matthew Lawrence 29.02 43 3 5 Luka Eradze 29.06 44 2 8 Alexandre Grand'Pierre 29.10 45 4 7 Phạm Thanh Bảo 29.17 46 3 8 Ashot Chakhoyan 29.46 47 3 6 Giacomo Casadei 29.84 48 3 0 Zach Moyo 30.05 49 3 2 Shane Cadogan 30.23 50 3 1 Jayden Loran 30.32 51 2 1 Hendrik Powdar 30.75 52 3 7 Sebastien Kouma 31.03 53 2 2 Chadd Ng Chiu Hing Ning 32.37 54 2 4 Slava Sihanouvong 32.93 55 1 5 Anthony Deleon 33.05 56 2 5 Fodé Amara Camara 33.42 NR 57 2 3 Jion Hosei 35.01 58 2 7 Hamzah Mayas 40.35 59 2 6 Ousman Jobe 41.77 1 4 Hilal Hemed Hilal 2 0 Abdulla Khalid Jamal 1 3 Ibrahim Kamara

Semifinals The semifinals were held on 25 July at 20:34.

Rank Heat Lane Name Nationality Time Notes 1 2 4 Qin Haiyang 26.20 Q, AS 2 1 4 Nicolò Martinenghi 26.74 Q 3 2 5 Sun Jiajun 26.78 Q 4 2 6 Lucas Matzerath 26.89 Q 5 2 3 João Gomes Júnior 26.90 Q 6 1 3 Nic Fink 26.95 Q 7 2 7 Peter John Stevens 27.04 Q 8 1 5 Samuel Williamson 27.06 Q 9 1 6 Simone Cerasuolo 27.07 10 1 2 Caspar Corbeau 27.21 11 2 2 Bernhard Reitshammer 27.25 11 2 8 Yuya Hinomoto 27.25 13 2 1 Emre Sakçı 27.32 14 1 8 Valentin Bayer 27.45 15 1 7 Arkadios Aspougalis 27.50 16 1 1 Michael Houlie 27.57

Final The final was held on 26 July at 21:01.

Rank Lane Name Nationality Time Notes 4 Qin Haiyang 26.29 7 Nic Fink 26.59 3 Sun Jiajun 26.79 4 8 Samuel Williamson 26.82 5 5 Nicolò Martinenghi 26.84 6 6 Lucas Matzerath 26.94 7 2 João Gomes Júnior 26.97 8 1 Peter John Stevens 27.08

References