| Event: | Men's 100m Backstroke |
| Competition: | 2012 Short Course Worlds |
| Dates: | 12 December (heats and semifinals) 13 December (final) |
| Win Value: | 49.89 |
| Gold: | Matt Grevers |
| Goldnoc: | USA |
| Silver: | Stanislav Donets |
| Silvernoc: | RUS |
| Bronze: | Guilherme Guido |
| Bronzenoc: | BRA |
| Prev: | 2010 |
| Next: | 2014 |
See main article: 2012 FINA World Swimming Championships (25 m).
The men's 100 metre backstroke event at the 11th FINA World Swimming Championships (25m) took place 12 - 13 December 2012 at the Sinan Erdem Dome.
Prior to this competition, the existing world and championship records were as follows.
| Name | Nation | Time | Location | Date | |||
|---|---|---|---|---|---|---|---|
| World record | Nick Thoman | align=left | 48.94 | 18 December 2009 | |||
| Championship record | align=left | 48.95 | 19 December 2010 |
No new records were set during this competition.
| 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 |
| 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 |
The final was held at 19:24.[3]
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 5 |  | 49.89 | ||||
| 4 |  | 49.91 | ||||
| 1 |  | 50.50 | ||||
| 4 | 3 |  | 50.61 | |||
| 5 | 6 | | 50.63 | |||
| 6 | 7 |  | 50.75 | |||
| 7 | 2 |  | 50.76 | NR | ||
| 8 | 8 | 51.27 |