| Men's 50 metre backstroke at the 2009 FINA World Championships | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Venue | Foro Italico | |||||||||
| Dates | 1 August 2009 (heats, semifinals) 2 August 2009 (final) | |||||||||
| Competitors | 142 | |||||||||
| Winning time | 24.04 seconds | |||||||||
| Medalists | ||||||||||
| ||||||||||
| 2009 FINA World Championships | ||
|---|---|---|
| Diving | ||
| Individual | ||
| 1 m | men | women |
| 3 m | men | women |
| 10 m | men | women |
| Synchronised | ||
| 3 m | men | women |
| 10 m | men | women |
| Open water swimming | ||
| 5 km | men | women |
| 10 km | men | women |
| 25 km | men | women |
| Swimming | ||
| Freestyle | ||
| 50 m | men | women |
| 100 m | men | women |
| 200 m | men | women |
| 400 m | men | women |
| 800 m | men | women |
| 1500 m | men | women |
| Backstroke | ||
| 50 m | men | women |
| 100 m | men | women |
| 200 m | men | women |
| Breaststroke | ||
| 50 m | men | women |
| 100 m | men | women |
| 200 m | men | women |
| Butterfly | ||
| 50 m | men | women |
| 100 m | men | women |
| 200 m | men | women |
| Individual medley | ||
| 200 m | men | women |
| 400 m | men | women |
| Freestyle relay | ||
| 4 × 100 m | men | women |
| 4 × 200 m | men | women |
| Medley relay | ||
| 4 × 100 m | men | women |
| Synchronised swimming | ||
| Solo | ||
| Technical | women | |
| Free | women | |
| Duet | ||
| Technical | women | |
| Free | women | |
| Team | ||
| Technical | women | |
| Free | women | |
| Combination | women | |
| Water polo | ||
| Tournament | men | women |
The heats for the men's 50 metre backstroke race at the 2009 World Championships took place in the morning and evening of 1 August, with the final in the evening session of 2 August at the Foro Italico in Rome, Italy.
Prior to this competition, the existing world and competition records were as follows:
| World record | 24.33 | Eindhoven, Netherlands | 5 December 2008 | |
| Championship record | 24.80 | Barcelona, Spain | 27 July 2003 |
The following records were established during the competition:
| Date | Round | Name | Nationality | Time | Record |
|---|---|---|---|---|---|
| 1 August | Heat 13 | Guilherme Guido | | 24.49 | CR |
| 1 August | Semifinal 1 | Liam Tancock | | 24.08 | WR |
| 2 August | Final | Liam Tancock | | 24.04 | WR |
| Rank | Name | Nationality | Time | Heat | Lane | Notes |
|---|---|---|---|---|---|---|
| 1 | Liam Tancock | 24.08 | 1 | 5 | WR | |
| 2 | Junya Koga | 24.29 | 2 | 3 | AS | |
| 3 | Camille Lacourt | 24.46 | 2 | 5 | NR | |
| 4 | Aschwin Wildeboer | 24.48 | 1 | 4 | NR | |
| 5 | Helge Meeuw | 24.59 | 1 | 3 | NR | |
| 6 | Gerhard Zandberg | 24.68 | 2 | 6 | =AF | |
| 7 | Mirco Di Tora | 24.77 | 1 | 8 | NR | |
| 7 | Aristeidis Grigoriadis | 24.77 | 2 | 7 | NR | |
| 9 | Flori Lang | 24.78 | 1 | 6 | ||
| 10 | Ryosuke Irie | 24.79 | 1 | 7 | ||
| 11 | Juan Miguel Rando | 24.80 | 2 | 2 | ||
| 12 | Guy Barnea | 24.81 | 1 | 2 | ||
| 13 | Thomas Rupprath | 24.87 | 2 | 1 | ||
| 14 | Daniel Orzechowski | 24.92 | 1 | 1 | ||
| 15 | Guilherme Guido | 24.98 | 2 | 4 | ||
| 16 | Ashley Delaney | 25.02 | 2 | 8 |
| Rank | Name | Nationality | Time | Lane | Notes |
|---|---|---|---|---|---|
| Liam Tancock | 24.04 | 4 | WR | ||
| Junya Koga | 24.24 | 5 | AS | ||
| Gerhard Zandberg | 24.34 | 7 | AF | ||
| 4 | Aschwin Wildeboer | 24.57 | 6 | ||
| 5 | Camille Lacourt | 24.61 | 3 | ||
| 6 | Helge Meeuw | 24.63 | 2 | ||
| 7 | Aristeidis Grigoriadis | 24.87 | 8 | ||
| 8 | Mirco Di Tora | 25.15 | 1 |