The Men's 100 metre backstroke competition of the 2022 FINA World Swimming Championships (25 m) will be held on 13 and 14 December 2022.

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

Results Heats The heats were started on 13 December at 11:44.

Rank Heat Lane Name Nationality Time Notes 1 4 4 Ryan Murphy 49.34 Q 2 5 3 Mewen Tomac 49.99 Q 3 6 3 Apostolos Christou 50.01 Q 4 3 4 Thierry Bollin 50.10 Q, NR 5 6 5 Kacper Stokowski 50.14 Q 6 3 2 Isaac Cooper 50.16 Q 7 5 4 Lorenzo Mora 50.18 Q 8 6 6 Yohann Ndoye-Brouard 50.21 Q 9 6 2 Pieter Coetze 50.26 Q 10 4 6 Ole Braunschweig 50.37 Q 10 5 5 Ryosuke Irie 50.37 Q 12 5 6 Tomáš Franta 50.60 Q 13 4 3 Luke Greenbank 50.72 Q 14 5 7 Ksawery Masiuk 50.84 Q 15 4 2 Markus Lie 50.89 Q, NR 16 3 7 Marek Ulrich 50.92 Q 17 4 8 Hunter Armstrong 50.93 18 4 5 Javier Acevedo 50.97 19 4 7 Daiki Yanagawa 50.99 20 4 1 Ng Cheuk Yin 51.30 NR 21 3 1 João Costa 51.34 22 6 7 Bradley Woodward 51.35 23 5 8 Wang Gukailai 51.85 24 6 1 Zac Dell 51.98 25 5 2 Armin Evert Lelle 52.39 26 3 5 Ģirts Feldbergs 52.44 27 6 8 Rasmin Oğulcan Gör 52.54 28 6 4 Robert Glinta 52.65 29 2 6 Chuang Mu-lun 52.79 30 5 1 Yeziel Morales 52.92 31 3 6 Kaloyan Levterov 53.22 32 3 8 Maximillan Wilson 53.23 33 3 3 Charles Hockin 53.88 34 2 4 Merdan Ataýew 55.04 35 2 3 Yazan Al-Bawwab 55.23 36 2 5 Abdellah Ardjoune 55.54 37 2 7 Alan Koti Lopeti Uhi 57.39 38 2 2 Abdalla El-Ghamry 58.72 39 1 4 Carel Van Melvin Irakoze 40 1 5 Mohamed Rihan Shiham 2 1 Mohamad Zubaid 1 3 Abobakr Abass

Semifinals The semifinals were started on 13 December at 20:38.

Rank Heat Lane Name Nationality Time Notes 1 2 4 Ryan Murphy 49.17 Q 2 2 3 Kacper Stokowski 49.33 Q 3 2 6 Lorenzo Mora 49.57 Q 4 2 5 Apostolos Christou 49.66 Q, NR 5 1 6 Yohann Ndoye-Brouard 49.78 Q 6 2 2 Pieter Coetze 49.85 Q, AF 7 1 3 Isaac Cooper 50.01 Q 7 1 4 Mewen Tomac 50.01 Q 9 2 7 Ryosuke Irie 50.08 10 1 5 Thierry Bollin 50.33 11 1 7 Tomáš Franta 50.39 NR 12 1 2 Ole Braunschweig 50.55 13 2 8 Markus Lie 50.67 NR 14 2 1 Luke Greenbank 50.81 15 1 1 Ksawery Masiuk 51.01 16 1 8 Marek Ulrich 51.12

Final The final was held on 14 December at 18:07.Final results

Rank Lane Name Nationality Time Notes 4 Ryan Murphy 48.50 CR 3 Lorenzo Mora 49.04 NR 1 Isaac Cooper 49.52 4 7 Pieter Coetze 49.60 AF 5 6 Apostolos Christou 49.68 6 5 Kacper Stokowski 49.74 7 8 Mewen Tomac 49.94 8 2 Yohann Ndoye-Brouard 50.01

References