# Swimming at the 2005 World Aquatics Championships – Men's 200 metre backstroke

The men's 200 metre backstroke event at the 2005 World Aquatics Championships took place between 28 July – 29 July. Both the heats and semifinals were held on 28 July, with the heats being held in the morning session and the semifinals in the evening session. The final was held on 29 July.

## Records

Prior to the competition, the existing world and championship records were as follows.
| | Name | Nationality | Time | Location | Date |
| World record | Aaron Peirsol | United States | 1:54.74 | Long Beach | 12 July 2004 |
| Championship record | Aaron Peirsol | United States | 1:55.82 | Barcelona | 24 July 2003 |
The following records were established during the competition:
| Date | Round | Name | Nationality | Time | WR | CR |
| July 29 | Final | Aaron Peirsol | United States | 1:54.66 | WR | CR |

## Results
### Heats

| Rank | Heat/Lane | Name | Nationality | Time | Notes |
| 1 | H6 L4 | Aaron Peirsol | United States | 1:58.04 | qualified |
| 2 | H6 L2 | Gordan Kožulj | Croatia | 1:59.03 | qualified |
| 3 | H4 L4 | Markus Rogan | Austria | 1:59.33 | qualified |
| 4 | H6 L6 | Tomomi Morita | Japan | 1:59.78 | qualified |
| 5 | H5 L5 | Răzvan Florea | Romania | 1:59.88 | qualified |
| 6 | H4 L3 | Takashi Nakano | Japan | 1:59.97 | qualified |
| 7 | H5 L6 | Blaž Medvešek | Slovenia | 2:00.11 | qualified |
| 8 | H6 L5 | Ryan Lochte | United States | 2:00.27 | qualified |
| 9 | H6 L3 | Gregor Tait | Great Britain | 2:00.57 | qualified |
| 10 | H4 L5 | Arkady Vyatchanin | Russia | 2:01.03 | qualified |
| 11 | H5 L3 | Simon Dufour | France | 2:01.60 | qualified |
| 12 | H4 L2 | Steffen Driesen | Germany | 2:01.69 | qualified |
| 13 | H4 L1 | Derya Büyükuncu | Turkey | 2:01.93 | qualified |
| 14 | H5 L4 | James Goddard | Great Britain | 2:02.00 | qualified |
| 15 | H5 L1 | Yoav Gath | Israel | 2:02.12 | qualified |
| 16 | H5 L7 | Patrick Murphy | Australia | 2:02.27 | qualified |
| 17 | H5 L8 | Pavel Suskov | Lithuania | 2:02.36 | |
| 18 | H4 L6 | Matt Welsh | Australia | 2:02.64 | |
| 19 | H5 L2 | Keith Beavers | Canada | 2:02.88 | |
| 20 | H4 L7 | Cameron Gibson | New Zealand | 2:02.89 | |
| 21 | H6 L7 | Luca Marin | Italy | 2:03.41 | |
| 22 | H6 L1 | Nick Neckles | Barbados | 2:04.00 | |
| 23 | H6 L8 | Alex Lim | Malaysia | 2:04.09 | |
| 24 | H3 L4 | Tomasz Rumianowski | Poland | 2:04.15 | |
| 25 | H4 L8 | Sebastian Stoss | Austria | 2:04.30 | |
| 26 | H3 L5 | Adriano Niz | Portugal | 2:04.61 | |
| 27 | H3 L6 | Seung-Hyeon Lee | South Korea | 2:06.92 | |
| 28 | H3 L1 | Alessio Domenack | Peru | 2:09.63 | |
| 29 | H3 L8 | Sergey Pankov | Uzbekistan | 2:10.28 | |
| 30 | H2 L5 | Marcus Cheah | Singapore | 2:11.04 | |
| 31 | H2 L3 | Zhi Cong Lim | Singapore | 2:11.35 | |
| 32 | H2 L7 | Kieran Locke | Virgin Islands | 2:11.96 | |
| 33 | H2 L2 | Andy Wibowo | Indonesia | 2:12.42 | |
| 34 | H2 L1 | David Dunford | Kenya | 2:12.84 | |
| 35 | H3 L2 | Yury Zaharov | Kyrgyzstan | 2:12.91 | |
| 36 | H2 L8 | Francisco Montenegro | Guatemala | 2:13.46 | |
| 37 | H2 L4 | Gael Adam | Mauritius | 2:13.75 | |
| 38 | H1 L4 | Shahin Baradaran | Iran | 2:15.04 | |
| 39 | H1 L3 | Antonio Tong | Macau | 2:15.79 | |
| 40 | H3 L7 | Suriya Suksuphak | Thailand | 2:17.29 | |
| 41 | H2 L6 | LIN Yu-An | Chinese Taipei | 2:17.30 | |
| 42 | H1 L8 | Francois Ghattas | Lebanon | 2:19.15 | |
| 43 | H1 L5 | Scott Hensley | Virgin Islands | 2:22.11 | |
| 44 | H1 L6 | Diego Foianini | Bolivia | 2:22.28 | |
| 45 | H1 L1 | Horacio Carcamo | Honduras | 2:23.19 | |
| 46 | H1 L2 | Reginaldo Panting | Honduras | 2:23.29 | |
| 47 | H1 L7 | Imdad Ali | Pakistan | 2:23.46 | |

### Semifinals

| Rank | Heat/Lane | Name | Nationality | Time | Notes |
| 1 | S2 L4 | Aaron Peirsol | USA | 1:56.60 | q |
| 2 | S2 L5 | Markus Rogan | Austria | 1:57.16 | q |
| 3 | S2 L3 | Răzvan Florea | Romania | 1:58.03 | q |
| 4 | S1 L6 | Ryan Lochte | USA | 1:58.17 | q |
| 5 | S1 L2 | Arkady Vyatchanin | Russia | 1:58.60 | q |
| 6 | S1 L5 | Tomomi Morita | Japan | 1:58.70 | q |
| 7 | S1 L4 | Gordan Kožulj | Croatia | 1:58.74 | q |
| 8 | S1 L3 | Takashi Nakano | Japan | 1:58.91 | q |
| 9 | S2 L2 | Gregor Tait | Great Britain | 1:58.97 | |
| 10 | S2 L6 | Blaž Medvešek | Slovenia | 1:59.10 | |
| 11 | S1 L1 | James Goddard | Great Britain | 1:59.16 | |
| 12 | S2 L7 | Simon Dufour | France | 2:00.08 | |
| 13 | S1 L7 | Steffen Driesen | Germany | 2:00.88 | |
| 14 | S2 L8 | Yoav Gath | Israel | 2:01.58 | |
| 14 | S2 L1 | Derya Büyükuncu | Turkey | 2:01.58 | |
| 16 | S1 L8 | Patrick Murphy | Australia | 2:03.15 | |

### Final

| Rank | Name | Nationality | Time | Notes |
| | Aaron Peirsol | USA | 1:54.66 | WR |
| | Markus Rogan | Austria | 1:56.63 | |
| | Ryan Lochte | USA | 1:57.00 | |
| 4 | Răzvan Florea | Romania | 1:57.03 | |
| 5 | Takashi Nakano | Japan | 1:58.03 | |
| 6 | Gordan Kožulj | Croatia | 1:58.28 | |
| 7 | Arkady Vyatchanin | Russia | 1:59.02 | |
| 8 | Tomomi Morita | Japan | 1:59.34 | |
Key: WR = World record