# Swimming at the 2005 World Aquatics Championships – Men's 50 metre butterfly

The Men's 50 Butterfly event at the 11th FINA World Aquatics Championships swam 26–-27 July 2005 in Montreal, Canada. Preliminary and Semifinal heats swam on 26 July, with the Final on 27 July.
Prior to the competition, the existing World (WR) and Championship (CR) records were:
* WR: 23.30 swum by Ian Crocker (United States) on 29 Feb 2004 in Swimming at the 2004 Big 12 Time Trials, Austin, United States.
* CR: 23.43 swum by Matt Welsh (Australia) on 21 Jul 2003 in Swimming at the 2003 FINA World Aquatic Championships Barcelona, Spain.

## Results
### Final

| Place | Swimmer | Nation | Time | Notes |
| 1 | Roland Schoeman | South Africa | 22.96 | WR |
| 2 | Ian Crocker | USA | 23.12 | |
| 3 | Sergiy Breus | Ukraine | 23.38 | |
| 4 | Ryk Neethling | South Africa | 23.48 | |
| 5 | Fernando Scherer | Brazil | 23.74 | |
| 6 | Evgeny Korotyshkin | Russia | 23.84 | |
| 7 | Duje Draganja | Croatia | 23.96 | |
| 8 | Mike Mintenko | Canada | 23.99 | |

### Semifinals

| Rank | Heat+Lane | Swimmer | Nation | Time | Notes |
| 1 | S1 L4 | Roland Schoeman | South Africa | 23.01 | q, WR |
| 2 | S2 L4 | Ian Crocker | USA | 23.32 | q |
| 3 | S1 L5 | Sergiy Breus | Ukraine | 23.53 | q |
| 4 | S1 L3 | Fernando Scherer | Brazil | 23.55 | q |
| 5 | S2 L5 | Ryk Neethling | South Africa | 23.62 | q |
| 6 | S1 L2 | Duje Draganja | Croatia | 23.71 | q |
| 7 | S2 L3 | Evgeny Korotyshkin | Russia | 23.82 | q |
| 8 | S2 L2 | Mike Mintenko | Canada | 23.85 | q |
| 9 | S1 L7 | Oliver Wenzel | Germany | 23.93 | |
| 10 | S1 L8 | Milorad Čavić | Serbia and Montenegro | 24.03 | |
| 10 | S2 L1 | Nikolay Skvortsov | Russia | 24.03 | |
| 12 | S1 L6 | Thomas Rupprath | Germany | 24.04 | |
| 13 | S1 L1 | Thomas Kindler | Canada | 24.07 | |
| 14 | S2 L6 | Jakob Andkjær | Denmark | 24.09 | |
| 15 | S2 L8 | Frédérick Bousquet | France | 24.14 | |
| 16 | S2 L7 | Andriy Serdinov | Ukraine | 24.18 | |

### Preliminaries

| Rank | Heat+Lane | Swimmer | Nation | Time | Notes |
| 1 | H14 L4 | Ian Crocker | United States | 23.50 | q |
| 2 | H11 L7 | Roland Schoeman | South Africa | 23.57 | q |
| 3 | H14 L3 | Ryk Neethling | South Africa | 23.74 | q |
| 4 | H14 L2 | Sergiy Breus | Ukraine | 23.77 | q |
| 5 | H14 L5 | Evgeny Korotyshkin | Russia | 23.87 | q |
| 6 | H12 L3 | Fernando Scherer | Brazil | 23.96 | q |
| 6 | H13 L2 | Jakob Andkjær | Denmark | 23.96 | q |
| 8 | H13 L4 | Thomas Rupprath | Germany | 24.07 | q |
| 9 | H13 L7 | Mike Mintenko | Canada | 24.08 | q |
| 9 | H14 L1 | Duje Draganja | Croatia | 24.08 | q |
| 11 | H13 L3 | Andriy Serdinov | Ukraine | 24.09 | q |
| 12 | H12 L5 | Oliver Wenzel | Germany | 24.10 | q |
| 13 | H14 L6 | Nikolay Skvortsov | Russia | 24.11 | q |
| 14 | H12 L7 | Thomas Kindler | Canada | 24.15 | q |
| 14 | H13 L6 | Frédérick Bousquet | France | 24.15 | q |
| 16 | H12 L6 | Kaio Almeida | Brazil | 24.22 | swim-off |
| 16 | H14 L7 | Milorad Čavić | Serbia and Montenegro | 24.22 | swim-off, q |
| 18 | H12 L2 | Ryo Takayasu | Japan | 24.23 | |
| 19 | H11 L4 | Jernej Godec | Slovenia | 24.25 | |
| 20 | H12 L8 | Ryan Pini | Papua New Guinea | 24.35 | |
| 21 | H10 L7 | Jayme Cramer | United States | 24.36 | |
| 22 | H13 L5 | Brett Hawke | Australia | 24.45 | |
| 23 | H11 L3 | Matt Welsh | Australia | 24.46 | |
| 24 | H14 L8 | Matti Rajakylä | Finland | 24.51 | |
| 25 | H10 L5 | Örn Arnarson | Iceland | 24.56 | |
| 25 | H12 L4 | Corney Swanepoel | New Zealand | 24.56 | |
| 27 | H11 L1 | Hjoertur Mar Reynisson | Iceland | 24.83 | |
| 28 | H10 L1 | Jose Mafio | Uruguay | 24.90 | |
| 29 | H11 L2 | Jernej Mencinger | Slovenia | 24.96 | |
| 30 | H12 L1 | Rustam Khudiyev | Kazakhstan | 24.98 | |
| 31 | H10 L8 | Georgi Palazov | Bulgaria | 25.05 | |
| 31 | H13 L8 | Matias Aguilera | Argentina | 25.05 | |
| 33 | H9 L4 | Roman Krolov | Estonia | 25.08 | |
| 34 | H11 L8 | Ravil Nachev | Uzbekistan | 25.11 | |
| 35 | H9 L6 | Lukas Harnol | Czech Republic | 25.13 | |
| 36 | H8 L6 | Paulius Viktoravicius | Lithuania | 25.17 | |
| 37 | H8 L3 | Jeong Nam Yu | South Korea | 25.20 | |
| 38 | H10 L4 | Hidemasa Sano | Japan | 25.23 | |
| 39 | H10 L6 | Michal Rubáček | Czech Republic | 25.25 | |
| 40 | H11 L5 | Moss Burmester | New Zealand | 25.27 | |
| 41 | H9 L7 | Ľuboš Križko | Slovakia | 25.36 | |
| 42 | H8 L5 | Stavros Michailidis | Cyprus | 25.41 | |
| 42 | H10 L3 | Oleg Lyashko | Uzbekistan | 25.41 | |
| 44 | H11 L6 | Andy Wibowo | Indonesia | 25.43 | |
| 45 | H6 L7 | Erez Feren | Israel | 25.47 | |
| 46 | H9 L2 | Jacinto Ayala | Dominican Republic | 25.50 | |
| 47 | H7 L4 | Gordon Touw Ngie Tjouw | Suriname | 25.64 | |
| 48 | H8 L4 | Wing Cheun Wong | Macau | 25.65 | |
| 49 | H9 L3 | Nadav Kochavi | Israel | 25.69 | |
| 50 | H8 L7 | Shawn Clarke | Barbados | 25.80 | |
| 51 | H8 L1 | Mansoor Al-Mansoor | Kuwait | 25.82 | |
| 51 | H9 L1 | Romāns Miloslavskis | Latvia | 25.82 | |
| 53 | H8 L8 | Michael O'Connor | Bermuda | 25.84 | |
| 54 | H8 L2 | Stepan Pinciuc | Moldova | 25.85 | |
| 55 | H7 L6 | Aghiles Slimani | Algeria | 25.86 | |
| 56 | H6 L3 | Julio Galofre | Colombia | 25.89 | |
| 57 | H9 L5 | Jason Dunford | Kenya | 25.92 | |
| 58 | H6 L8 | Kuan Fong Lao | Macau | 25.96 | |
| 59 | H5 L4 | Josh Laban | Virgin Islands | 26.16 | |
| 60 | H4 L2 | James Walsh | Philippines | 26.22 | |
| 61 | H9 L8 | Cheng Xun Ng | Singapore | 26.27 | |
| 62 | H6 L5 | Rama Vyombo | Kenya | 26.28 | |
| 63 | H7 L5 | Yong Chung | South Korea | 26.33 | |
| 64 | H6 L2 | Miguel Navarro | Bolivia | 26.37 | |
| 65 | H4 L4 | Zurab Khoasuridze | Georgia | 26.38 | |
| 66 | H6 L1 | Gregory Arkhurst | Ivory Coast | 26.43 | |
| 67 | H5 L8 | Basil Kaaki | Lebanon | 26.52 | |
| 68 | H6 L6 | Daniel Carrillo | Paraguay | 26.58 | |
| 69 | H6 L4 | Bader Almuhana | Saudi Arabia | 26.63 | |
| 69 | H7 L7 | Jeffrey Su | Singapore | 26.63 | |
| 71 | H4 L6 | Sean Dehere | Barbados | 26.66 | |
| 72 | H5 L7 | Erik Rajohnson | Madagascar | 26.67 | |
| 73 | H4 L7 | Rodrigo Díaz | Guatemala | 26.72 | |
| 74 | H7 L1 | Fernando Medrano | Nicaragua | 26.85 | |
| 75 | H7 L3 | Nguyen Thanh Hai | Vietnam | 26.89 | |
| 76 | H1 L6 | Yan Lin Aung | Myanmar | 26.90 | |
| 77 | H5 L3 | Brad Hamilton | Jamaica | 26.93 | |
| 78 | H4 L5 | Marc Dansou | Benin | 26.97 | |
| 79 | H4 L1 | Khaly Ciss | Senegal | 27.01 | |
| 79 | H5 L1 | Tunui Cowan | Tahiti | 27.01 | |
| 81 | H4 L8 | Alexander Ray | Namibia | 27.07 | |
| 82 | H5 L6 | Matias Rementeria Perez | Uruguay | 27.09 | |
| 83 | H1 L2 | Tamatoa Ellacott | Tahiti | 27.10 | |
| 84 | H5 L5 | Scott Hensley | Virgin Islands | 27.11 | |
| 85 | H3 L3 | Rony Bakale | Republic of the Congo | 27.16 | |
| 85 | H5 L2 | Madicke Mbengue | Senegal | 27.16 | |
| 87 | H4 L3 | Sunny Ayejoh | Nigeria | 27.17 | |
| 88 | H3 L8 | Alain Brigion-Tobe | Cameroon | 27.62 | |
| 89 | H3 L5 | Marcelo Alba | Bolivia | 27.80 | |
| 90 | H7 L8 | Milinda Wickramasinghe | Sri Lanka | 27.87 | |
| 91 | H3 L4 | Connor Keith | Guam | 28.07 | |
| 92 | H1 L1 | Earlando McRae | Guyana | 28.26 | |
| 93 | H2 L4 | Reginaldo Panting | Honduras | 28.43 | |
| 94 | H2 L5 | Hesham Fadhul | Bahrain | 28.50 | |
| 95 | H1 L8 | Aung Kyaw Moe | Myanmar | 28.62 | |
| 96 | H3 L1 | Jonathan Calderon | Saint Lucia | 28.86 | |
| 97 | H1 L3 | Tony D. Augustine | Federated States of Micronesia | 29.56 | |
| 98 | H2 L6 | Sadeq Damrah | Palestine | 30.24 | |
| 99 | H2 L7 | Ian Taylor | Marshall Islands | 30.29 | |
| 100 | H2 L2 | Gilbert Kaburu | Uganda | 30.41 | |
| 101 | H1 L7 | Kerson Hadley | Federated States of Micronesia | 30.50 | |
| 102 | H2 L8 | Joshua Marfleet | Samoa | 33.35 | |
| 103 | H1 L4 | Hassan Shah | Maldives | 34.74 | |
| - | H3 L2 | Bayarerdene Soninerdene | Mongolia | DQ | |
| - | H1 L5 | Gibrilla Bamba | Sierra Leone | DNS | |
| - | H2 L1 | Kodjovi Mawuena Kowouvi | Togo | DNS | |
| - | H2 L3 | Leonel Matonse | Mozambique | DNS | |
| - | H3 L6 | Ibrahim Maliki Amadou | Niger | DNS | |
| - | H3 L7 | Remigio Chilanle | Mozambique | DNS | |
| - | H7 L2 | Ahmed Md Jewel | Bangladesh | DNS | |
| - | H10 L2 | Ahmed Salah | Egypt | DNS | |
| - | H13 L1 | Alexei Puninski | Croatia | DNS | |
Swim-off for 16th Results from the swim-off for 16th place, between Milorad Cavic and Kaio Almeida were:
* 24.02 – Milorad Cavic (Serbia & Montenegro)
* 24.22 – Kaio Almeida (Brazil)