# Swimming at the 2005 World Aquatics Championships – Men's 100 metre breaststroke

The Men's 100 Breaststroke event at the 11th FINA World Aquatics Championships swam 24 and 25 July 2005 in Montreal, Canada. Preliminary and semifinal heats were swum 24 July; finals on July 25.
At the start of the event, the existing World (WR) and Championships (CR) records were:
* WR: 59.30 swum by Brendan Hansen (USA) on July 8, 2004, in Long Beach, USA
* CR: 59.78 swum by Kosuke Kitajima (Japan) on July 21, 2003, in Barcelona, Spain

## Results
### Final

| Place | Swimmer | Nation | Time | Notes |
| 1 | Brendan Hansen | United States | 59.37 | CR |
| 2 | Kosuke Kitajima | Japan | 59.53 | |
| 3 | Hugues Duboscq | France | 1:00.20 | |
| 4 | Oleg Lisogor | Ukraine | 1:00.36 | |
| 5 | Dmitry Komornikov | Russia | 1:00.66 | |
| 6 | Chris Cook | United Kingdom | 1:00.99 | |
| 7 | Alexander Dale Oen | Norway | 1:01.29 | |
| 8 | Emil Tahirovič | Slovenia | 1:01.33 | |

### Semifinals

| Rank | Heat/Lane | Swimmer | Nation | Time | Notes |
| 1 | S1 L4 | Brendan Hansen | USA | 59.75 | q |
| 2 | S2 L4 | Kosuke Kitajima | Japan | 59.78 | q |
| 3 | S2 L3 | Oleg Lisogor | Ukraine | 1:00.06 | q |
| 4 | S2 L5 | Hugues Duboscq | France | 1:00.11 | q |
| 5 | S1 L5 | Chris Cook | Great Britain | 1:00.64 | q |
| 6 | S1 L3 | Emil Tahirovič | Slovenia | 1:00.84 | q |
| 7 | S2 L2 | Alexander Dale Oen | Norway | 1:01.28 | q |
| 8 | S1 L2 | Dmitry Komornikov | Russia | 1:01.30 | q |
| 9 | S1 L8 | Mark Gangloff | USA | 1:01.35 | |
| 10 | S1 L7 | Brenton Rickard | Australia | 1:01.51 | |
| 11 | S2 L6 | Mike Brown | Canada | 1:01.59 | |
| 12 | S2 L1 | Jarno Pihlava | Finland | 1:01.60 | |
| 13 | S1 L6 | Genki Imamura | Japan | 1:01.64 | |
| 14 | S2 L7 | Jim Piper | Australia | 1:01.67 | |
| 15 | S2 L8 | Vlad Polyakov | Kazakhstan | 1:01.70 | |
| 16 | S1 L1 | Jens Kruppa | Germany | 1:01.92 | |

### Preliminaries

| Rank | Heat/Lane | Swimmer | Nation | Time | Notes |
| 1 | H12 L3 | Kosuke Kitajima | Japan | 59.71 | q, CR |
| 2 | H12 L4 | Brendan Hansen | United States | 59.84 | q |
| 3 | H10 L5 | Hugues Duboscq | France | 1:00.05 | q |
| 4 | H10 L6 | Chris Cook | Great Britain | 1:00.86 | q |
| 5 | H11 L3 | Oleg Lisogor | Ukraine | 1:01.05 | q |
| 6 | H11 L7 | Emil Tahirovič | Slovenia | 1:01.29 | q |
| 7 | H12 L1 | Mike Brown | Canada | 1:01.30 | q |
| 8 | H12 L2 | Genki Imamura | Japan | 1:01.37 | q |
| 9 | H9 L6 | Alexander Dale Oen | Norway | 1:01.50 | q |
| 10 | H10 L4 | Dmitry Komornikov | Russia | 1:01.54 | q |
| 10 | H12 L7 | Jim Piper | Australia | 1:01.54 | q |
| 12 | H11 L4 | Brenton Rickard | Australia | 1:01.57 | q |
| 13 | H10 L1 | Jarno Pihlava | Finland | 1:01.64 | q |
| 14 | H11 L8 | Jens Kruppa | Germany | 1:01.78 | q |
| 15 | H10 L3 | Vlad Polyakov | Kazakhstan | 1:01.83 | q |
| 16 | H12 L5 | Mark Gangloff | United States | 1:01.90 | q |
| 17 | H10 L7 | Valeriy Dymo | Ukraine | 1:01.93 | |
| 18 | H12 L8 | Scott Dickens | Canada | 1:02.00 | |
| 19 | H11 L6 | Alessandro Terrin | Italy | 1:02.01 | |
| 19 | H12 L6 | Grigory Falko | Russia | 1:02.01 | |
| 21 | H8 L4 | Matjaž Markič | Slovenia | 1:02.03 | |
| 22 | H9 L4 | Sławomir Kuczko | Poland | 1:02.13 | |
| 23 | H9 L5 | Martin Gustavsson | Sweden | 1:02.19 | |
| 24 | H11 L2 | Richárd Bodor | Hungary | 1:02.23 | |
| 25 | H9 L1 | Jakob Sveinsson | Iceland | 1:02.32 | |
| 26 | H10 L2 | Mark Warnecke | Germany | 1:02.34 | |
| 27 | H8 L8 | Mihail Alexandrov | Bulgaria | 1:02.37 | |
| 28 | H9 L2 | Maxim Podoprigora | Austria | 1:02.38 | |
| 29 | H11 L5 | Darren Mew | Great Britain | 1:02.43 | |
| 30 | H10 L8 | Thijs van Valkengoed | Netherlands | 1:02.63 | |
| 31 | H9 L8 | Haibo Wang | China | 1:02.80 | |
| 32 | H8 L5 | Seung Hun You | South Korea | 1:02.86 | |
| 33 | H9 L7 | Lennart Stekelenburg | Netherlands | 1:02.93 | |
| 34 | H8 L3 | Alwin de Prins | Luxembourg | 1:03.00 | |
| 35 | H11 L1 | Loris Facci | Italy | 1:03.11 | |
| 36 | H8 L7 | Daniel Málek | Czech Republic | 1:03.28 | |
| 37 | H7 L5 | Thabang Moeketsane | South Africa | 1:03.63 | |
| 38 | H8 L6 | Malick Fall | Senegal | 1:03.70 | |
| 39 | H8 L2 | Mladen Tepavčević | Serbia and Montenegro | 1:03.73 | |
| 40 | H7 L4 | Yevgeniy Ryzhkov | Kazakhstan | 1:03.75 | |
| 41 | H6 L3 | Dzianis Silkov | Belarus | 1:03.90 | |
| 42 | H6 L4 | Jiri Jedlicka | Czech Republic | 1:03.93 | |
| 43 | H7 L7 | Sofiane Daid | Algeria | 1:04.02 | |
| 44 | H9 L3 | Mihály Flaskay | Hungary | 1:04.05 | |
| 45 | H6 L5 | Bradley Ally | Barbados | 1:04.06 | |
| 46 | H6 L7 | Aleksander Hetland | Norway | 1:04.09 | |
| 47 | H8 L1 | Glenn Snyders | New Zealand | 1:04.14 | |
| 48 | H7 L2 | Aleksandr Baldin | Estonia | 1:04.18 | |
| 49 | H7 L8 | Dean Kent | New Zealand | 1:04.27 | |
| 50 | H7 L1 | Vorrawuti Aumpiwan | Thailand | 1:04.55 | |
| 51 | H7 L3 | Arsenio López | Puerto Rico | 1:04.67 | |
| 52 | H5 L2 | Andrei Capitanciuc | Moldova | 1:05.42 | |
| 53 | H6 L6 | Tom Be'eri | Israel | 1:05.44 | |
| 54 | H6 L2 | Puneet Rana | India | 1:05.45 | |
| 55 | H5 L4 | Andrey Morkovin | Uzbekistan | 1:05.54 | |
| 56 | H5 L6 | Kyriakos Dimosthenous | Cyprus | 1:05.58 | |
| 57 | H6 L8 | Sergei Postica | Moldova | 1:05.73 | |
| 58 | H4 L4 | Tianji Han | China | 1:05.92 | |
| 59 | H7 L6 | Wei-Wen Wang | Chinese Taipei | 1:05.95 | |
| 60 | H4 L8 | Keun Min Jin | South Korea | 1:05.96 | |
| 61 | H5 L3 | Maksim Shilov | Uzbekistan | 1:06.12 | |
| 62 | H5 L7 | Herry Yudhianto | Indonesia | 1:06.24 | |
| 63 | H5 L8 | Mark Tan | Singapore | 1:06.31 | |
| 64 | H3 L1 | Milan Glamocic | Bosnia and Herzegovina | 1:07.06 | |
| 65 | H5 L1 | Alfonso Espinosa | Dominican Republic | 1:07.25 | |
| 66 | H3 L6 | Eric Williams | Nigeria | 1:07.74 | |
| 67 | H3 L7 | Chisela Kanchela | Zambia | 1:07.80 | |
| 68 | H4 L3 | Leonard Tan | Singapore | 1:07.81 | |
| 69 | H4 L6 | Mohamad Al-Naser | Kuwait | 1:07.89 | |
| 70 | H3 L3 | Kevin Hensley | Virgin Islands | 1:08.00 | |
| 71 | H4 L5 | Édgar Crespo | Panama | 1:08.22 | |
| 72 | H2 L4 | Antonio Leon | Paraguay | 1:08.44 | |
| 73 | H4 L1 | Graham Smith | Bermuda | 1:08.51 | |
| 74 | H3 L5 | Johnny Castillo | Panama | 1:08.88 | |
| 75 | H4 L2 | Chan Wai Ma | Macau | 1:08.89 | |
| 76 | H3 L8 | Yousuf Alyousuf | Saudi Arabia | 1:09.31 | |
| 77 | H4 L7 | Ivane Lekvtadze | Georgia | 1:09.57 | |
| 78 | H3 L2 | Amar Shan | Kenya | 1:09.60 | |
| 79 | H2 L6 | Aziz Abdul | Pakistan | 1:11.08 | |
| 80 | H2 L2 | Joel Refos | Suriname | 1:11.81 | |
| 81 | H3 L4 | Teymur Guliyev | Azerbaijan | 1:12.24 | |
| 82 | H2 L1 | Sadeq Damrah | Palestine | 1:15.65 | |
| 83 | H1 L4 | Ganbold Urnultsaikhan | Mongolia | 1:16.32 | |
| 84 | H1 L2 | Earlando McRae | Guyana | 1:16.95 | |
| 85 | H1 L5 | Boldbaatar Butekhuils | Mongolia | 1:20.32 | |
| 86 | H1 L3 | Ian Taylor | Marshall Islands | 1:20.80 | |
| 87 | H1 L6 | Michael Taylor | Marshall Islands | 1:21.39 | |
| 88 | H2 L8 | Noah Mugenyi | Uganda | 1:24.45 | |
| - | H2 L5 | Hei Meng Lao | Macau | DQ | |
| - | H2 L3 | Remigio Chilanle | Mozambique | DNS | |
| - | H2 L7 | Alice Shrestha | Nepal | DNS | |
| - | H5 L5 | Francisco Picasso | Uruguay | DNS | |
| - | H6 L1 | Ayman Khattab | Egypt | DNS | |