| Event: | Men's 100 metre backstroke |
| Competition: | 2022 FINA World Swimming Championships (25 m) |
| Venue: | Melbourne Sports and Aquatic Centre |
| Location: | Melbourne, Australia |
| Dates: | 13 December (heats and semifinals) 14 December (final) |
| Competitors: | 41 |
| Nations: | 35 |
| Win Value: | 48.50 CR |
| Gold: | Ryan Murphy |
| Goldnoc: | USA |
| Silver: | Lorenzo Mora |
| Silvernoc: | ITA |
| Bronze: | Isaac Cooper |
| Bronzenoc: | AUS |
| Prev: | 2021 |
| Next: | 2024 |
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.[1]
Prior to the competition, the existing world and championship records were as follows.
The heats were started on 13 December at 11:44.[2]
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|---|
| 1 | 4 | 4 | 49.34 | Q | ||
| 2 | 5 | 3 | 49.99 | Q | ||
| 3 | 6 | 3 | 50.01 | Q | ||
| 4 | 3 | 4 | 50.10 | Q, NR | ||
| 5 | 6 | 5 | 50.14 | Q | ||
| 6 | 3 | 2 | 50.16 | Q | ||
| 7 | 5 | 4 | 50.18 | Q | ||
| 8 | 6 | 6 | 50.21 | Q | ||
| 9 | 6 | 2 | 50.26 | Q | ||
| 10 | 4 | 6 | 50.37 | Q | ||
| 10 | 5 | 5 | 50.37 | Q | ||
| 12 | 5 | 6 | 50.60 | Q | ||
| 13 | 4 | 3 | 50.72 | Q | ||
| 14 | 5 | 7 | 50.84 | Q | ||
| 15 | 4 | 2 | 50.89 | Q, NR | ||
| 16 | 3 | 7 | 50.92 | Q | ||
| 17 | 4 | 8 | 50.93 | |||
| 18 | 4 | 5 | 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 | 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 | 52.44 | |||
| 27 | 6 | 8 | Rasmin Oğulcan Gör | 52.54 | ||
| 28 | 6 | 4 | 52.65 | |||
| 29 | 2 | 6 | Chuang Mu-lun | 52.79 | ||
| 30 | 5 | 1 | 52.92 | |||
| 31 | 3 | 6 | 53.22 | |||
| 32 | 3 | 8 | Maximillan Wilson | 53.23 | ||
| 33 | 3 | 3 | 53.88 | |||
| 34 | 2 | 4 | 55.04 | |||
| 35 | 2 | 3 | 55.23 | |||
| 36 | 2 | 5 | 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 | |||||
The semifinals were started on 13 December at 20:38.[3]
| Rank | Heat | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|---|
| 1 | 2 | 4 | 49.17 | Q | |||
| 2 | 2 | 3 | 49.33 | Q | |||
| 3 | 2 | 6 | 49.57 | Q | |||
| 4 | 2 | 5 | 49.66 | Q, NR | |||
| 5 | 1 | 6 | 49.78 | Q | |||
| 6 | 2 | 2 | 49.85 | Q, AF | |||
| 7 | 1 | 3 | 50.01 | Q | |||
| 7 | 1 | 4 | 50.01 | Q | |||
| 9 | 2 | 7 | 50.08 | ||||
| 10 | 1 | 5 | 50.33 | ||||
| 11 | 1 | 7 | 50.39 | NR | |||
| 12 | 1 | 2 | 50.55 | ||||
| 13 | 2 | 8 | 50.67 | NR | |||
| 14 | 2 | 1 | 50.81 | ||||
| 15 | 1 | 1 | 51.01 | ||||
| 16 | 1 | 8 | 51.12 |
The final was held on 14 December at 18:07.[4]
| 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 |