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

The men's 100 metre freestyle at the 2005 World Aquatics Championships occurred on 27 July (heats and semifinals) and in the evening of 28 July (final) in the Olympic pool at Parc Jean-Drapeau in Montreal, Canada. 131 swimmers were entered in the event, of which 124 swam in one of 17 preliminary heats. The top-16 swimmers from the heats advanced on to semifinals; the top-8 swimmers in the two semifinals heats advanced onto the next night's final.
The existing records at the start of the event were:
* World record (WR): 47.84, Pieter van den Hoogenband (Netherlands), September 19, 2000 in Sydney, Australia.
* Championship record (CR): 48.33, Anthony Ervin (USA), Fukuoka 2001 (Jul.27.2001)

## Results
### Final

| Place | Name | Nationality | Time | Note |
| 1 | Filippo Magnini | Italy | 48.12 | CR |
| 2 | Roland Schoeman | South Africa | 48.28 | |
| 3 | Ryk Neethling | South Africa | 48.34 | |
| 4 | Jason Lezak | USA | 48.74 | |
| 5 | Duje Draganja | Croatia | 48.89 | |
| 6 | Brent Hayden | Canada | 48.92 | |
| 7 | Michael Phelps | USA | 48.99 | |
| 8 | Amaury Leveaux | France | 49.55 | |

### Semifinals

| Rank | Name | Nationality | Time | Note |
| 1 | Roland Schoeman | South Africa | 48.45 | Q |
| 2 | Ryk Neethling | South Africa | 48.54 | Q |
| 3 | Filippo Magnini | Italy | 48.73 | Q |
| 4 | Duje Draganja | Croatia | 48.88 | Q |
| 5 | Michael Phelps | USA | 48.93 | Q |
| 6 | Jason Lezak | USA | 49.03 | Q |
| 7 | Brent Hayden | Canada | 49.05 | Q |
| 8 | Amaury Leveaux | France | 49.19 | Q |
| 9 | Frédérick Bousquet | France | 49.21 | |
| 10 | Lukasz Gasior | Poland | 49.31 | |
| 11 | Michael Klim | Australia | 49.32 | |
| 12 | Stefan Nystrand | Sweden | 49.41 | |
| 13 | Salim Iles | Algeria | 49.51 | |
| 14 | Andrey Kapralov | Russia | 49.53 | |
| 15 | Peter Mankoč | Slovenia | 50.90 | |
| 16 | Rolandas Gimbutis | Lithuania | 50.42 | |

### Preliminaries

| Rank | Swimmer | Nation | Time | Note |
| 1 | Filippo Magnini | Italy | 48.97 | Q |
| 2 | Ryk Neethling | South Africa | 49.04 | Q |
| 3 | Michael Phelps | United States | 49.23 | Q |
| 3 | Roland Schoeman | South Africa | 49.23 | Q |
| 5 | Salim Iles | Algeria | 49.28 | Q |
| 6 | Brent Hayden | Canada | 49.29 | Q |
| 7 | Duje Draganja | Croatia | 49.31 | Q |
| 7 | Łukasz Gąsior | Poland | 49.31 | Q |
| 9 | Jason Lezak | United States | 49.34 | Q |
| 10 | Frédérick Bousquet | France | 49.38 | Q |
| 11 | Andrei Kapralov | Russia | 49.46 | Q |
| 12 | Peter Mankoč | Slovenia | 49.59 | Q |
| 13 | Amaury Leveaux | France | 49.60 | Q |
| 14 | Stefan Nystrand | Sweden | 49.64 | Q |
| 15 | Michael Klim | Australia | 49.71 | Q |
| 16 | Rolandas Gimbutis | Lithuania | 49.73 | Q |
| 17 | Evgeny Lagunov | Russia | 49.88 | |
| 18 | Yuri Yegoshin | Ukraine | 49.89 | |
| 19 | Denys Syzonenko | Ukraine | 49.97 | |
| 20 | Andrew Mewing | Australia | 49.99 | |
| 21 | Nabil Kebbab | Algeria | 50.01 | |
| 22 | Daisuke Hosokawa | Japan | 50.07 | |
| 23 | Jens Schreiber | Germany | 50.08 | |
| 24 | Zuo Chen | China | 50.20 | |
| 25 | Matti Rajakylä | Finland | 50.21 | |
| 26 | Hisayoshi Sato | Japan | 50.23 | |
| 27 | Leif-Marten Kruger | Germany | 50.24 | |
| 28 | Stanislav Neviarovski | Belarus | 50.32 | |
| 29 | Mitja Zastrow | Netherlands | 50.45 | |
| 30 | Örn Arnarson | Iceland | 50.47 | |
| 31 | Romāns Miloslavskis | Latvia | 50.51 | |
| 32 | Saulius Binevičius | Lithuania | 50.59 | |
| 33 | Tiago Venâncio | Portugal | 50.60 | |
| 34 | Jernej Godec | Slovenia | 50.69 | |
| 35 | Matias Aguilera | Argentina | 50.71 | |
| 36 | Dominik Koll | Austria | 50.77 | |
| 37 | Jakob Andkjær | Denmark | 50.88 | |
| 37 | Apostolos Antonopoulos | Greece | 50.88 | |
| 39 | Petter Stymne | Sweden | 51.04 | |
| 40 | Cameron Gibson | New Zealand | 51.06 | |
| 41 | Yahor Salabutov | Belarus | 51.08 | |
| 42 | Rick Say | Canada | 51.20 | |
| 43 | Maximilian Schnettler | Chile | 51.47 | NR |
| 44 | Ryan Pini | Papua New Guinea | 51.66 | |
| 45 | Antonio Hernandez | Cuba | 51.67 | |
| 46 | Ravil Nachaev | Uzbekistan | 51.75 | |
| 47 | Kunliang Zheng | China | 51.79 | |
| 48 | Jose Mafio | Uruguay | 51.82 | |
| 49 | Vitaliy Khan | Kazakhstan | 51.87 | |
| 50 | Shai Livnat | Israel | 52.06 | |
| 51 | Jacinto Ayala | Dominican Republic | 52.21 | |
| 52 | Terrence Haynes | Barbados | 52.56 | |
| 53 | Carl Probert | Fiji | 52.34 | |
| 53 | Corney Swanepoel | New Zealand | 52.34 | |
| 55 | Alexandr Sklyar | Kazakhstan | 52.42 | |
| 56 | Bryan Tay | Singapore | 52.60 | |
| 57 | Jason Dunford | Kenya | 52.72 | |
| 58 | Ki Hyuk Sim | South Korea | 52.74 | |
| 59 | Mohamed Madwa | Kuwait | 52.82 | |
| 60 | Mark Chay | Singapore | 52.88 | |
| 61 | Matias Rementeria Perez | Uruguay | 52.95 | |
| 62 | Joshua Laban | Virgin Islands | 53.03 | |
| 63 | Sebastian Arango Herrera | Colombia | 53.18 | |
| 64 | Suriya Suksuphak | Thailand | 53.27 | |
| 64 | Petr Vasilev | Uzbekistan | 53.27 | |
| 66 | Stepan Pinciuc | Moldova | 53.44 | |
| 67 | Wing Cheun Wong | Macau | 53.49 | |
| 68 | Brad Hamilton | Jamaica | 53.50 | |
| 69 | Basil Kaaki | Libya | 53.56 | |
| 70 | Shawn Clarke | Barbados | 53.63 | |
| 71 | Carlos Castro | Chile | 53.75 | |
| 72 | Akbar M. Nasution | Indonesia | 53.84 | |
| 73 | Ronald Cowan | Bermuda | 53.85 | |
| 74 | Kieran Locke | Virgin Islands | 53.88 | |
| 75 | Rodrigo Diaz | Guatemala | 53.92 | |
| 76 | Kuan Fong Lao | Macau | 53.93 | |
| 77 | Andy Wibowo | Indonesia | 53.96 | |
| 78 | Gregory Arkhurst | Ivory Coast | 53.99 | |
| 79 | Jose Lobo | Paraguay | 54.02 | |
| 80 | Francisco Montenegro | Guatemala | 54.28 | |
| 81 | Mikayel Koloyan | Armenia | 54.30 | |
| 82 | Waleed Al-Qahtani | Kuwait | 54.56 | |
| 83 | Vorrawuti Aumpiwan | Thailand | 54.57 | |
| 84 | David Dunford | Kenya | 54.77 | |
| 85 | Aleksandr Moseshvili | Georgia | 54.86 | |
| 86 | Nguyen Thanh Hai | Vietnam | 54.87 | |
| 87 | Alexander Ray | Namibia | 54.95 | |
| 87 | Bradford Worrell | Saint Lucia | 54.95 |
| 89 | Soheil Ashtiani | Iran | 55.00 | |
| 90 | Emile-Rony Bakale | Republic of the Congo | 55.04 | |
| 91 | Anas Hamadeh | Jordan | 55.42 | |
| 91 | Emanuele Nicolini | San Marino | 55.42 | |
| 93 | Horacio Carcamo | Honduras | 55.53 | |
| 94 | Julio Rivera | Honduras | 55.84 | |
| 95 | Yan Lin Aung | Myanmar | 55.86 | |
| 96 | Marc Dansou | Benin | 56.09 | |
| 97 | Tunui Cowan | Tahiti | 56.15 | |
| 98 | Connor H Keith | Guam | 56.19 | |
| 99 | Miguel Navarro | Bolivia | 56.28 | |
| 100 | Madicke Mbengue | Senegal | 56.31 | |
| 101 | Milinda Wickramasinghe | Sri Lanka | 56.79 | |
| 102 | Andrei Tamir | Mongolia | 56.82 | |
| 103 | Marcelo Alba | Bolivia | 56.86 | |
| 104 | Fernando Medrano | Nicaragua | 57.01 | |
| 105 | Steven Mangroo | Seychelles | 57.09 | |
| 106 | Bader Almuhana | Saudi Arabia | 57.21 | |
| 107 | Tamatoa Ellacott | Tahiti | 57.45 | |
| 108 | Romulo Pereira | Angola | 57.57 | |
| 109 | Andrey Molchanov | Turkmenistan | 57.63 | |
| 110 | Loai Tashkandi | Saudi Arabia | 57.66 | |
| 111 | Pape Madiop Ndong | Senegal | 58.07 | |
| 112 | Orkhan Samadov | Azerbaijan | 58.10 | |
| 113 | Earlando McRae | Guyana | 58.24 | |
| 114 | Alain Brigion-Tobe | Cameroon | 58.31 | |
| 115 | Remigio Chilanle | Mozambique | 1:00.01 | |
| 116 | Bayaredene Soninerdene | Mongolia | 1:00.44 | |
| 117 | Ian Taylor | Marshall Islands | 1:00.71 | |
| 118 | Kerson Hadley | Federated States of Micronesia | 1:01.19 | |
| 119 | Joshua Marfleet | Samoa | 1:02.45 | |
| 120 | Issam Halawani | Palestine | 1:02.75 | |
| 121 | Michael Taylor | Marshall Islands | 1:04.22 | |
| 122 | Tony D. Augustine | Federated States of Micronesia | 1:04.71 | |
| 123 | Hassan Shah | Maldives | 1:09.46 | |
| - | Lorenzo Vismara | Italy | DQ | |
| - | Neil Agius | Malta | DNS | |
| - | Islam Kazi Monirul | Bangladesh | DNS | |
| - | Leonel Matonse | Mozambique | DNS | |
| - | Maran Cruz | Puerto Rico | DNS | |
| - | Dominik Meichtry | Switzerland | DNS | |
| - | Aristeidis Grigoraidis | Greece | DNS | |
| - | Milorad Čavić | Serbia and Montenegro | DNS | |