2012 FINA World Swimming Championships (25 m) – Men's 100 metre backstroke
The men's 100 metre backstroke event at the 11th FINA World Swimming Championships took place 12 - 13 December 2012 at the Sinan Erdem Dome.Records
Prior to this competition, the existing world and championship records were as follows.
No new records were set during this competition.Results
Heats
| Rank | Heat | Lane | Name | Time | Notes |
| 1 | 5 | 4 | | 50.22 | Q |
| 2 | 6 | 4 | | 50.55 | Q |
| 3 | 7 | 4 | | 50.83 | Q |
| 4 | 6 | 5 | | 51.14 | Q |
| 5 | 5 | 5 | | 51.19 | Q |
| 5 | 7 | 3 | | 51.19 | Q |
| 7 | 4 | 6 | | 51.30 | Q, NR |
| 8 | 6 | 3 | | 51.40 | Q |
| 9 | 7 | 6 | | 51.48 | Q |
| 10 | 7 | 5 | | 51.51 | Q |
| 11 | 6 | 2 | | 51.55 | Q |
| 12 | 7 | 7 | | 51.56 | Q |
| 13 | 6 | 6 | | 51.58 | Q |
| 14 | 7 | 2 | | 51.61 | Q |
| 15 | 6 | 7 | | 51.69 | Q |
| 16 | 5 | 2 | | 51.70 | Q |
| 17 | 7 | 8 | | 51.82 | |
| 18 | 5 | 6 | | 51.89 | |
| 19 | 5 | 3 | | 51.99 | |
| 20 | 6 | 8 | | 52.09 | |
| 21 | 7 | 0 | | 52.11 | |
| 22 | 1 | 1 | | 52.17 | |
| 23 | 5 | 8 | | 52.19 | |
| 24 | 1 | 8 | | 52.21 | |
| 25 | 7 | 1 | | 52.22 | |
| 26 | 5 | 1 | | 52.60 | |
| 27 | 6 | 1 | | 52.66 | |
| 28 | 5 | 7 | | 52.74 | |
| 29 | 5 | 0 | | 53.03 | |
| 30 | 6 | 0 | | 53.35 | |
| 31 | 6 | 9 | | 53.45 | |
| 32 | 4 | 4 | | 53.68 | |
| 33 | 4 | 2 | | 53.89 | NR |
| 34 | 4 | 9 | | 54.00 | |
| 35 | 5 | 9 | | 54.08 | |
| 36 | 4 | 5 | | 54.70 | NR |
| 37 | 7 | 9 | | 54.74 | |
| 38 | 4 | 7 | | 54.96 | |
| 39 | 4 | 0 | | 55.08 | |
| 40 | 3 | 5 | | 55.15 | |
| 41 | 4 | 3 | | 55.20 | |
| 42 | 4 | 8 | | 55.22 | |
| 43 | 3 | 4 | | 55.55 | |
| 44 | 3 | 3 | | 55.64 | NR |
| 45 | 3 | 9 | | 56.16 | |
| 46 | 3 | 7 | | 56.32 | |
| 47 | 3 | 6 | | 56.95 | |
| 48 | 2 | 4 | | 57.19 | |
| 49 | 3 | 1 | | 58.26 | |
| 50 | 3 | 0 | | 58.96 | |
| 51 | 2 | 3 | | 59.15 | |
| 52 | 2 | 1 | | 59.17 | |
| 53 | 3 | 2 | | 59.50 | |
| 54 | 3 | 8 | | 59.82 | |
| 55 | 2 | 2 | | | |
| 56 | 2 | 6 | | | |
| 57 | 2 | 7 | | | |
| 58 | 2 | 8 | | | |
| 59 | 2 | 5 | | | |
| 60 | 2 | 9 | | | |
| 61 | 2 | 0 | | | |
| 62 | 1 | 4 | | | |
| 63 | 1 | 5 | | | |
| 64 | 1 | 3 | | | |
| 4 | 1 | | | |
| 1 | 6 | | | |
| 1 | 7 | | | |
Semifinals
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 2 | 5 | Stanislav Donets | | 49.98 | Q |
| 2 | 1 | 4 | Matt Grevers | | 50.24 | Q |
| 3 | 1 | 3 | Ashley Delaney | | 50.66 | Q |
| 4 | 2 | 4 | Robert Hurley | | 50.70 | Q |
| 5 | 1 | 7 | Iskender Baslakov | | 50.77 | Q, NR |
| 6 | 1 | 2 | Radosław Kawęcki | | 50.88 | Q |
| 7 | 1 | 5 | Guilherme Guido | | 50.98 | Q |
| 8 | 1 | 1 | Christian Diener | | 51.06 | Q |
| 9 | 2 | 6 | Guy Barnea | | 51.12 | NR |
| 10 | 2 | 3 | Aschwin Wildeboer | | 51.16 | |
| 11 | 2 | 7 | Péter Bernek | | 51.42 | |
| 12 | 1 | 8 | Cheng Feiyi | | 51.43 | |
| 13 | 2 | 2 | Pavel Sankovich | | 51.47 | |
| 13 | 2 | 8 | Mirco Di Tora | | 51.47 | |
| 15 | 1 | 6 | Kosuke Hagino | | 51.56 | |
| 16 | 2 | 1 | Damiano Lestingi | | 51.63 | |
Final
The final was held at 19:24.
| Rank | Lane | Name | Nationality | Time | Notes |
| 5 | Matt Grevers | USA | 49.89 | |
| 4 | Stanislav Donets | RUS | 49.91 | |
| 1 | Guilherme Guido | BRA | 50.50 | |
| 4 | 3 | Ashley Delaney | AUS | 50.61 | |
| 5 | 6 | Robert Hurley | AUS | 50.63 | |
| 6 | 7 | Radosław Kawęcki | POL | 50.75 | |
| 7 | 2 | Iskender Baslakov | TUR | 50.76 | NR |
| 8 | 8 | Christian Diener | GER | 51.27 | |
