The Men's 50 metre backstroke competition of the 2021 FINA World Swimming Championships (25 m) was held on 18 and 19 December 2021.

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

Results Heats The heats were started on 18 December at 09:59.Heats results

Rank Heat Lane Name Nationality Time Notes 1 6 4 Kliment Kolesnikov Russian Swimming Federation 23.14 Q 2 5 3 Gabriel Fantoni 23.15 Q 3 3 4 Shaine Casas 23.23 Q 4 5 5 Pavel Samusenko Russian Swimming Federation 23.26 Q 5 6 5 Christian Diener 23.28 Q 6 4 6 Kacper Stokowski 23.33 Q 7 4 5 Guilherme Guido 23.47 Q 8 4 3 Lorenzo Mora 23.49 Q 8 4 7 Jan Čejka 23.49 Q, NR 10 5 4 Michele Lamberti 23.50 Q 11 5 2 Mohamed Samy 23.54 Q, NR 11 6 3 Apostolos Christou 23.54 Q 13 5 6 Ole Braunschweig 23.57 Q 14 4 4 Robert Glință 23.58 Q 15 5 7 Simon Bucher 23.63 Q 16 6 1 Alexis Santos 23.75 16 6 2 Tomáš Franta 23.75 18 6 7 Grigori Pekarski 23.77 18 6 8 Mewen Tomac 23.77 20 5 1 Won Young-jun 23.94 21 5 8 Doruk Tekin 23.96 21 6 6 Viktar Staselovich 23.96 23 4 2 Markus Lie 23.98 24 4 1 Yohann Ndoye Brouard 24.03 25 4 0 Michael Laitarovsky 24.32 26 3 1 Jerard Jacinto 24.40 NR 26 4 9 Srihari Nataraj 24.40 NR 28 6 9 Hugo González 24.41 29 5 0 Lau Shiu Yue 24.42 30 4 8 Yeziel Morales 24.44 31 6 0 Charles Hockin 24.48 32 3 7 Jack Kirby 24.71 NR 33 5 9 I Gede Siman Sudartawa 24.76 34 3 8 Oleksandr Zheltiakov 24.82 35 3 9 Filippos Iakovidis 25.17 NR 36 3 6 Max Mannes 25.30 37 2 4 Akalanka Peiris 25.31 38 3 5 Maximillian Wilson 25.49 39 2 5 Ali Al-Zamil 25.86 40 3 0 Gabriel Castillo 25.96 41 2 3 Felipe Jaramillo 26.18 NR 42 3 2 Omar Al-Rowaila 26.38 43 3 3 Abdellah Ardjoune 26.56 44 2 2 Mekhayl Engel 26.68 45 2 1 Juwel Ahmmed 27.04 46 2 6 Tameea Elhamayda 27.80 47 1 3 Rohan Shearer 28.96 48 2 7 Ahmed Al-Marzooqi 29.44 49 2 8 Papa Poku-Dwumoh 30.17 1 4 Souleymane Napare DNS 1 5 Yousef Al-Washali

Swim-off The swim-off was held on 18 December at 11:38.Swim-off results Rank Lane Name Nationality Time Notes 1 4 Alexis Santos 23.41 Q, NR 2 5 Tomáš Franta 23.71

Semifinals The semifinals were started on 18 December at 19:25.Semifinals results Rank Heat Lane Name Nationality Time Notes 1 1 5 Pavel Samusenko Russian Swimming Federation 22.74 Q 2 2 4 Kliment Kolesnikov Russian Swimming Federation 22.78 Q 3 2 3 Christian Diener 22.89 Q 4 1 6 Lorenzo Mora 23.13 Q 4 2 5 Shaine Casas 23.13 Q 6 1 2 Michele Lamberti 23.15 Q 7 1 3 Kacper Stokowski 23.17 Q 8 1 7 Apostolos Christou 23.26 Q 9 1 1 Robert Glință 23.28 10 1 8 Alexis Santos 23.35 NR 11 1 4 Gabriel Fantoni 23.37 12 2 2 Jan Čejka 23.40 NR 13 2 6 Guilherme Guido 23.51 14 2 1 Ole Braunschweig 23.54 15 2 8 Simon Bucher 23.58 16 2 7 Mohamed Samy 23.65

Final The final was held on 19 December at 19:35.Final results Rank Lane Name Nationality Time Notes 5 Kliment Kolesnikov Russian Swimming Federation 22.66 3 Christian Diener 22.90 6 Lorenzo Mora 22.90 4 4 Pavel Samusenko Russian Swimming Federation 22.93 5 7 Michele Lamberti 22.94 6 1 Kacper Stokowski 22.98 7 2 Shaine Casas 22.99 8 8 Apostolos Christou 23.08

References