• World record (WR)
  World record progression 100 metres butterfly
  The first world record in the 100 metres butterfly in long course swimming was recognised by the International Swimming Federation in 1957, for both men and women...
  
  : 50.40, Ian Crocker
  Ian Crocker
  Ian Lowell Crocker is a former American swimmer and five-time Olympic medalist. He is a former world record holder in the 100 meter butterfly ....
  
   (USA), 30 July 2005 in Montreal, Canada
  Swimming at the 2005 World Aquatics Championships
  The swimming events at the XI FINA World Championships took place in the Parc Jean-Drapeau in Montreal, Canada from July 24–31, 2005.The swimming portion consisted of 50 events – 25 for men and 25 for women – all of which were swum in a long-course pool...
  
  .
• Championship record (CR): 50.40, Ian Crocker
  Ian Crocker
  Ian Lowell Crocker is a former American swimmer and five-time Olympic medalist. He is a former world record holder in the 100 meter butterfly ....
  
   (USA), Montreal 2005
  Swimming at the 2005 World Aquatics Championships
  The swimming events at the XI FINA World Championships took place in the Parc Jean-Drapeau in Montreal, Canada from July 24–31, 2005.The swimming portion consisted of 50 events – 25 for men and 25 for women – all of which were swum in a long-course pool...
  
   (30 July 2005)

Finals

Place	Name	Nationality	Time	Note
1	Michael Phelps Michael Phelps Michael Fred Phelps is an American swimmer who has, overall, won 16 Olympic medals—six gold and two bronze at Athens in 2004, and eight gold at Beijing in 2008, becoming the most successful athlete at both of these Olympic Games editions...	United States	50.77
2	Ian Crocker Ian Crocker Ian Lowell Crocker is a former American swimmer and five-time Olympic medalist. He is a former world record holder in the 100 meter butterfly ....	United States	50.82
3	Albert Subirats Altes	Venezuela	51.82
4	Lyndon Ferns Lyndon Ferns Lyndon Ferns is a retired Olympic gold-medalist and former world record swimmer from South Africa. He swam for South Africa at the 2004 and 2008 Olympics....	South Africa	52.03
5	Andriy Serdinov Andriy Serdinov Andriy Serdinov is a Ukrainian swimmer, who competed in the 2000 Olympics, 2004 Olympics and the 2008 Olympics. Serdinov also won the bronze medal in the 100 m butterfly at the 2004 Summer Olympics....	Ukraine	52.23
6	Milorad Čavić Milorad Cavic Milorad Čavić is an American-born Serbian swimmer.-Swimming career:...	Serbia	52.53
7	Nikolay Skvortsov Nikolay Skvortsov (swimmer) Nikolay Valeryevich Skvortsov is a butterfly swimmer from Russia, who won a silver and a bronze medal at the 2004 European Championships in Madrid, Spain. He swam for Russia at the 2004 Summer Olympics, where he finished in seventh place in the 200 fly....	Russia	52.54
8	Jason Dunford Jason Dunford Jason Edward Dunford is a swimmer from Kenya. He is predominantly a butterfly and freestyle sprinter. He has won gold medals at the Commonwealth Games, Universiade, All-Africa Games and African Championships, and reached finals at Olympics, World Championships and Short Course World Championships....	Kenya	52.70

Semifinals

Rank	Swimmer	Nation	Time	Note
1	Ian Crocker Ian Crocker Ian Lowell Crocker is a former American swimmer and five-time Olympic medalist. He is a former world record holder in the 100 meter butterfly ....	United States	51.41	Q
2	Albert Subirats Altes	Venezuela	51.81	Q
3	Lyndon Ferns Lyndon Ferns Lyndon Ferns is a retired Olympic gold-medalist and former world record swimmer from South Africa. He swam for South Africa at the 2004 and 2008 Olympics....	South Africa	51.90	Q
4	Michael Phelps Michael Phelps Michael Fred Phelps is an American swimmer who has, overall, won 16 Olympic medals—six gold and two bronze at Athens in 2004, and eight gold at Beijing in 2008, becoming the most successful athlete at both of these Olympic Games editions...	United States	51.92	Q
5	Andriy Serdinov Andriy Serdinov Andriy Serdinov is a Ukrainian swimmer, who competed in the 2000 Olympics, 2004 Olympics and the 2008 Olympics. Serdinov also won the bronze medal in the 100 m butterfly at the 2004 Summer Olympics....	Ukraine	52.11	Q
6	Milorad Čavić Milorad Cavic Milorad Čavić is an American-born Serbian swimmer.-Swimming career:...	Serbia	52.16	Q
7	Nikolay Skvortsov Nikolay Skvortsov (swimmer) Nikolay Valeryevich Skvortsov is a butterfly swimmer from Russia, who won a silver and a bronze medal at the 2004 European Championships in Madrid, Spain. He swam for Russia at the 2004 Summer Olympics, where he finished in seventh place in the 200 fly....	Russia	52.22	Q
8	Jason Dunford Jason Dunford Jason Edward Dunford is a swimmer from Kenya. He is predominantly a butterfly and freestyle sprinter. He has won gold medals at the Commonwealth Games, Universiade, All-Africa Games and African Championships, and reached finals at Olympics, World Championships and Short Course World Championships....	Kenya	52.26	Q-(swim-off)
9	Ryan Pini Ryan Pini Ryan John Pini is a 2-time Olympic swimmer from Papua New Guinea. He swam for PNG at the 2004 and 2008 Olympics; also serving as the PNG flagbearer in 2008...	Papua New Guinea	52.26	(swim-off)
10	Peter Mankoč Peter Mankoc Peter Mankoč is one of the best Slovenian swimmers of all time and one of the most successful short course European Championship swimmers in the history of the event.- Personal :...	Slovenia	52.31
11	Lars Frölander Lars Frölander Lars Arne Frölander is a Swedish swimmer. He grew up in Ornäs in Borlänge Municipality. He competed in 5 consecutive Olympic Games . The highlight of his career was when he won the gold in the 100 metre butterfly event at the Sydney Olympic Games in 2000...	Sweden	52.39
12	Sergiy Breus Sergiy Breus Sergiy Breus is a butterfly swimmer from Ukraine, who won the gold medal in the men's 50 m butterfly at the 2004 European Long Course Championships in Madrid, Spain.-References:*...	Ukraine	52.46
13	Takashi Yamamoto	Japan	52.74
14	Corney Swanepoel Corney Swanepoel Corney Swanepoel is a butterfly swimmer from New Zealand. He swam for New Zealand at the 2004 and 2008 Olympics....	New Zealand	52.94
15	Andrew Lauterstein Andrew Lauterstein Andrew George Lauterstein is an Australian swimmer and a three-time Olympic medalist.- Personal :...	Australia	52.99
16	Yauheni Lazuka	Belarus	53.46

Swim-off for 8th/Finals

1. Jason Dunford
   Jason Dunford
   Jason Edward Dunford is a swimmer from Kenya. He is predominantly a butterfly and freestyle sprinter. He has won gold medals at the Commonwealth Games, Universiade, All-Africa Games and African Championships, and reached finals at Olympics, World Championships and Short Course World Championships....
   
    (Kenya) — 51.85 (Q)
2. Ryan Pini
   Ryan Pini
   Ryan John Pini is a 2-time Olympic swimmer from Papua New Guinea. He swam for PNG at the 2004 and 2008 Olympics; also serving as the PNG flagbearer in 2008...
   
    (Papua New Guinea) — 52.10

Heats

Rank	Heat / Lane	Name	Nationality	50m split	Time	Notes
001	H16-L4	Ian Crocker Ian Crocker Ian Lowell Crocker is a former American swimmer and five-time Olympic medalist. He is a former world record holder in the 100 meter butterfly ....	United States	23.97	00:51.44	Q
002	H01-L5	Milorad Čavić Milorad Cavic Milorad Čavić is an American-born Serbian swimmer.-Swimming career:...		23.42	00:51.70	Q
003	H15-L4	Michael Phelps Michael Phelps Michael Fred Phelps is an American swimmer who has, overall, won 16 Olympic medals—six gold and two bronze at Athens in 2004, and eight gold at Beijing in 2008, becoming the most successful athlete at both of these Olympic Games editions...	United States	24.92	00:51.95	Q
004	H14-L5	Albert Subirats Altes		24.05	00:52.15	Q
005	H15-L5	Lyndon Ferns Lyndon Ferns Lyndon Ferns is a retired Olympic gold-medalist and former world record swimmer from South Africa. He swam for South Africa at the 2004 and 2008 Olympics....		24.01	00:52.26	Q
006	H14-L3	Ryan Pini Ryan Pini Ryan John Pini is a 2-time Olympic swimmer from Papua New Guinea. He swam for PNG at the 2004 and 2008 Olympics; also serving as the PNG flagbearer in 2008...		24.25	00:52.27	Q
007	H16-L6	Peter Mankoč Peter Mankoc Peter Mankoč is one of the best Slovenian swimmers of all time and one of the most successful short course European Championship swimmers in the history of the event.- Personal :...		24.24	00:52.30	Q
008	H13-L5	Lars Frölander Lars Frölander Lars Arne Frölander is a Swedish swimmer. He grew up in Ornäs in Borlänge Municipality. He competed in 5 consecutive Olympic Games . The highlight of his career was when he won the gold in the 100 metre butterfly event at the Sydney Olympic Games in 2000...		24.53	00:52.34	Q
009	H16-L5	Andriy Serdinov Andriy Serdinov Andriy Serdinov is a Ukrainian swimmer, who competed in the 2000 Olympics, 2004 Olympics and the 2008 Olympics. Serdinov also won the bronze medal in the 100 m butterfly at the 2004 Summer Olympics....		24.31	00:52.43	Q
010	H16-L1	Corney Swanepoel Corney Swanepoel Corney Swanepoel is a butterfly swimmer from New Zealand. He swam for New Zealand at the 2004 and 2008 Olympics....		24.28	00:52.46	Q
011	H15-L8	Andrew Lauterstein Andrew Lauterstein Andrew George Lauterstein is an Australian swimmer and a three-time Olympic medalist.- Personal :...		24.80	00:52.63	Q
012	H14-L8	Sergiy Breus Sergiy Breus Sergiy Breus is a butterfly swimmer from Ukraine, who won the gold medal in the men's 50 m butterfly at the 2004 European Long Course Championships in Madrid, Spain.-References:*...		24.33	00:52.64	Q
013	H16-L3	Takashi Yamamoto		24.56	00:52.69	Q
014	H13-L2	Jason Dunford Jason Dunford Jason Edward Dunford is a swimmer from Kenya. He is predominantly a butterfly and freestyle sprinter. He has won gold medals at the Commonwealth Games, Universiade, All-Africa Games and African Championships, and reached finals at Olympics, World Championships and Short Course World Championships....		24.38	00:52.76	Q
015	H14-L4	Nikolay Skvortsov Nikolay Skvortsov (swimmer) Nikolay Valeryevich Skvortsov is a butterfly swimmer from Russia, who won a silver and a bronze medal at the 2004 European Championships in Madrid, Spain. He swam for Russia at the 2004 Summer Olympics, where he finished in seventh place in the 200 fly....		24.48	00:52.79	Q
016	H12-L7	Yauheni Lazuka		24.42	00:53.10	Q
016.5	H13.5				00:53.111	O
017	H16-L8	Gabriel Mangabeira Gabriel Mangabeira Gabriel Semain Vasconcellos Mangabeira is a Brazilian international swimmer who qualified for the men's 100-meter butterfly at both the 2004 Summer Olympics and 2008 Summer Olympics...		24.99	00:53.16
018	H14-L6	Amaury Leveaux Amaury Leveaux Amaury Leveaux is a French swimmer from Belfort. Leveaux is the current world record holder in the 100 m freestyle ) He also holds the 200 m freestyle national record and the European record in the 50 m freestyle...		24.84	00:53.21
019	H15-L6	Moss Burmester Moss Burmester Moss James Burmester is a New Zealand swimmer. His specialist event is the 200m butterfly in which he holds the Commonwealth record of 1:54.35 set at the 2008 Summer Olympics...		25.01	00:53.28
020	H15-L2	Adam Pine Adam Pine Adam Pine is an Australian freestyle and butterfly swimmer. Adam is married to Sasha Pine and is the father of 3 children, Maximillian, Buster and Xander....		25.21	00:53.33
021	H12-L6	Octavio Alesi		24.63	00:53.41
022	H14-L7	Evgeny Korotyshkin Evgeny Korotyshkin Yevgeny Yevgeniyevich Korotyshkin, occasionally spelled "Evgeny", is a Russian swimmer from Moscow.- References :...		25.01	00:53.47
023	H15-L3	Ryo Takayasu Ryo Takayasu is a Japanese butterfly swimmer.-Major achievements:2006 Pan Pacific Swimming Championships* 100m butterfly 2nd * 4×100m medley relay 2nd 2007 World Championships* 50m butterfly 10th * 100m butterfly 23rd -Personal bests:...		24.69	00:53.53
024	H13-L3	Örn Arnarson Örn Arnarson Örn Arnarson is a backstroke swimmer from Iceland, who won his first major title in 1998 at the European SC Championships in Sheffield. There he captured the title in the 200 m backstroke....		24.59	00:53.54
025	H15-L1	Fernando Silva Fernando Silva (swimmer) Fernando Silva in an Olympic and National Record holding swimmer from Brazil. He swam for Brazil at the 2008 Olympics, as a member of the men's 4x100m free relay.He will swim for Brazil at the 2009 World Championships....		24.90	00:53.55
026	H14-L2	Sotirios Pastras		24.72	00:53.57
027	H16-L2	WANG Dong Wang Dong (swimmer) Wang Dong is a Chinese swimmer. He has represented China in the following competitions:*2006 Asian Games - 50 metre butterfly, winning a bronze medal at the 50 metre butterfly*2007 World Aquatics Championships – Men's 50m butterfly...		24.66	00:53.61
028	H15-L7	Rudy Goldin		25.13	00:53.66
029	H13-L1	Jakob Andkjær Jakob Andkjær Jakob Sciøtt Andkjær is a Danish swimmer studying at the Auburn University and bronze medalist at the 2007 World Aquatics Championships on 50 m butterfly.-References:...		24.56	00:53.71
030	H12-L2	Mario Todorovic		24.98	00:53.72
031	H13-L6	Simão Morgado Simão Morgado Simão Morgado is a male Portuguese swimmer. He is the national record holder of the 50-meter butterfly and since 1997 and he has beaten the National Record in the 100 meters thirteen times....		24.79	00:53.75
032	H12-L1	Mathieu Fonteyn		25.40	00:53.78
033	H12-L3	Ioan Stefan Gherghel		25.26	00:53.86
034	H11-L5	Rafael Muñoz Pérez		24.75	00:53.91
035	H14-L1	Todd Cooper Todd Cooper Todd Alexander Cooper is a freestyle and butterfly swimmer from England, who competed at the 2004 Summer Olympics in Athens, Greece. There he finished in 22nd position in the 100 m butterfly...		25.08	00:54.00
036	H10-L3	Guy Marcus Barnea		25.29	00:54.25
037	H13-L4	Christophe Lebon		24.75	00:54.27
038	H11-L4	Juan Veloz Juan Veloz Juan José Veloz Dávila is an Olympic and national record-holding swimmer for Mexico. He swam for his native country at the 2000, 2004, and 2008 Olympics.-Career:...		25.53	00:54.33
039	H11-L2	Pablo Marmolejo		25.36	00:54.34
040	H12-L5	Jeremy Knowles Jeremy Knowles (swimmer) Jeremy Daniel Knowles is a 3-time Olympic and Bahamian-Record-holding swimmer from The Bahamas.He was the Bahamas flag-bearer at the 2007 Pan American Games.-International tournaments:*1997 Short Course Worlds...		25.44	00:54.42
041	H08-L3	Damien Courtois		24.68	00:54.44
042	H10-L5	Jere Hård Jere Hård Jere Hård is a retired male freestyle and butterfly swimmer from Finland. He twice swam for his native country at the Olympics: in 2000 and 2004....		24.90	00:54.52
043	H11-L3	Camilo Becerra Camilo Becerra Camilo Becerra is a three-time Olympic freestyle swimmer from Colombia. He swam from Colombia at the 2000, 2004 and 2008 Olympics....		25.12	00:54.62
044	H10-L7	Martin Verner		25.28	00:54.72
045	H12-L4	Michal Rubacek		25.08	00:54.76
046	H16-L7	ZHOU Jiawei Zhou Jiawei Zhou Jiawei is an national-record-holding swimmer from China. He set the Asian Record in the long-course 50m butterfly at the 2009 Chinese Nationals; and set the Chinese Record also in the long-course 100 butterfly at the 2009 Chinese National Games.He has swum for China at the:*Asian Games:...		25.75	00:54.85
047	H13-L7	Dominik Straga		25.15	00:54.90
048	H10-L8	Oleg Lyashko		25.49	00:55.07
049	H11-L8	Julio Galofre		25.90	00:55.19
050	H11-L1	Stanislav Kuzmin		25.45	00:55.23
051	H11-L6	Paulius Andrijauskas		25.67	00:55.25
052	H11-L7	Georgi Palazov		25.00	00:55.29
053	H09-L6	Gordon Touw Ngie Tjouw		25.46	00:55.33
054	H09-L4	Emilis Vaitkaitis		24.96	00:55.39
055	H12-L8	Daniel William Bego		25.88	00:55.41
056	H09-L3	Ankur Poseria		25.76	00:55.51
057	H09-L2	Romans Miloslavskis Romāns Miloslavskis Romāns Miloslavskis is a swimmer from Latvia. He has participated in 2004 Summer Olympics and 2008 Summer Olympics. Miloslavskis was 35th in 100 m freestyle at Athens Olympics and achieved 25th place in 200 m freestyle at Beijig Olympics. He holds several Latvian records in swimming.-References:...		25.58	00:55.54
058	H09-L5	Wing Cheung Victor Wong		25.91	00:55.64
059	H10-L6	Mathias Stenderup Gydesen		25.95	00:55.70
060	H10-L1	Rustam Khudiyev Rustam Khudiyev Rustam Khudiyev is an Olympic butterfly swimmer from Kazakhstan. He swam for Kazakhstan at the 2004 and Rustam Khudiyev is an Olympic [[butterfly swimming|butterfly]] [[swimmer]] from [[Kazakhstan]]...		25.29	00:55.73
061	H09-L1	Hamidreza Mobarrez		25.84	00:55.84
062	H08-L8	Andy Wibowo		25.61	00:55.88
063	H08-L2	Garth Tune		25.52	00:56.02
064	H07-L7	Adrien Perez		25.42	00:56.04
065	H10-L4	Pavels Kondrahins		25.39	00:56.08
066	H09-L8	Jorge Arturo Arce Aita		25.90	00:56.14
067	H08-L7	Aleksander Hetland Aleksander Hetland Aleksander Hetland is a Norwegian swimmer. Hetland, who represents Bærumssvømmerne, has his strength in the medley events....		25.70	00:56.23
067	H08-L1	Jose Emmanuel Crescimbeni		26.33	00:56.23
069	H09-L7	Basil Kaaki		26.61	00:56.43
070	H08-L5	Donny Budiarto Utomo		26.63	00:56.54
071	H07-L4	Radonyos Matjiur		26.98	00:56.84
072	H07-L5	Miguel Navarro		26.72	00:57.00
073	H07-L8	Roy Felipe Barahona Fuente		26.78	00:57.34
074	H07-L2	Xue-Wei Nicholas Tan		26.83	00:57.40
075	H08-L4	Arjun Muralidharan		26.50	00:57.46
076	H08-L6	Nisic Nedim		26.59	00:57.60
077	H05-L6	Petr Romashkin		26.72	00:57.98
078	H06-L7	Javier Hernandez Maradiaga		27.20	00:58.00
079	H06-L5	Tze Kang Ng		27.10	00:58.02
080	H07-L3	Bader Almuhana		26.99	00:58.07
081	H06-L3	João Matias		26.82	00:58.19
082	H06-L2	Taki M'Rabet		26.69	00:58.28
083	H07-L1	Goksu Bicer		26.02	00:58.36
084	H05-L2	Jared Heine		27.35	00:58.50
085	H06-L1	Carlos Eduardo Gil		27.32	00:58.62
086	H04-L5	Khaly Ciss		27.52	00:59.13
087	H03-L4	Morgan Locke	Virgin Islands United States Virgin Islands The Virgin Islands of the United States are a group of islands in the Caribbean that are an insular area of the United States. The islands are geographically part of the Virgin Islands archipelago and are located in the Leeward Islands of the Lesser Antilles.The U.S...	27.26	00:59.16
087	H06-L6	Moustafa Al-Saleh		27.76	00:59.16
089	H07-L6	Marco Camargo Gonzalez		27.31	00:59.29
090	H04-L2	Alejandro Madde		28.16	00:59.64
091	H04-L6	Nasir Ali		28.37	1:00.01
092	H03-L3	Rama Vyombo		27.91	1:00.27
093	H05-L7	Sohaib Kalali		28.24	1:00.35
094	H05-L3	Nuno Rola		27.98	1:00.59
095	H04-L8	Erik Rajohnson		27.73	1:00.65
096	H04-L3	Eros Qama		27.67	1:00.77
097	H02-L6	Hamza Abdo		27.91	1:00.98
098	H06-L8	Miro Krestevski		28.16	1:01.04
099	H05-L5	Bertrand Bristol		28.19	1:01.21
100	H03-L2	Battushig Enkhtaivan		27.68	1:01.49
101	H04-L4	Anas Hamadeh		28.02	1:01.68
102	H04-L7	Luke Hall		28.40	1:01.99
103	H05-L4	Fernando Medrano Medina		27.82	1:02.03
104	H05-L8	Aleksey Klimenko		28.87	1:02.54
105	H02-L2	Hernan Bonsembiante		28.04	1:02.62
106	H03-L7	Hisham Fadhul		28.42	1:02.82
107	H04-L1	Hong Nam Lei		29.29	1:03.00
108	H03-L5	Richard Randranandraina		28.88	1:03.33
109	H03-L8	Jean-Luc Augier		28.65	1:03.36
110	H02-L3	Daryl Kurt Harford		28.07	1:03.42
111	H01-L4	Eric Chang		28.83	1:03.54
112	H03-L1	Walid Nasib Hilal Alkaabi		29.43	1:03.76
113	H03-L6	Naji Askia Ferguson		28.20	1:04.00
114	H02-L4	Zane Jordan Zane Jordan Zane Jordan is an Olympic swimmer from Zambia. He swam for Zambia at the 2008 Olympics, finishing 65th in the 50 m freestyle ....		29.52	1:04.26
115	H02-L5	Fadi Awesat		29.24	1:05.04
116	H02-L7	Eli Ebenezer Wong		31.12	1:07.01
117	H02-L1	Mohamed Sharif		33.43	1:16.84
999--	H06-L4	Yellow Yeiyah Yellow Yeiyah Yellow Yeiyah, last names also seen as two words "Yei Yah", is an Olympic swimmer from Nigeria. He swam for Nigeria at the 2008 Olympics....			DQ
999--	H01-L3	Abdul-Fatawu Moro			DNS
999--	H05-L1	Sunday Ayejo			DNS
999--	H10-L2	Jacinto Ayala			DNS
999--	H13-L8	Jernej Godec Jernej Godec Jernej Godec is a freestyle and butterfly swimmer from Slovenia, who competed for his native country at the 2004 Summer Olympics in Athens, Greece and the 2008 Summer Olympics in Beijing, China....			DNS

See also

• Swimming at the 2005 World Aquatics Championships – Men's 100 metre butterfly
  Swimming at the 2005 World Aquatics Championships – Men's 100 metre butterfly
  The men's 100 metre butterfly event at the 2005 World Aquatics Championships took place between 29 July – 30 July. Both the heats and semifinals were held on 29 July with the heats being held in the morning session and the semifinals being held in the evening session...
  
  
• Swimming at the 2008 Summer Olympics – Men's 100 metre butterfly
  Swimming at the 2008 Summer Olympics – Men's 100 metre butterfly
  The men's 100 metre butterfly event, included in the swimming competition at the 2008 Summer Olympics, took place on August 14–16, at the Beijing National Aquatics Center...
  
  
• Swimming at the 2009 World Aquatics Championships – Men's 100m butterfly
  Swimming at the 2009 World Aquatics Championships – Men's 100m butterfly
  The men's 100 metre butterfly event at the 2009 World Aquatics Championships took place between 31 July – 1 August at the Foro Italico. Both the heats and semifinals were held on 31 July with the heats being held in the morning session and the semifinals being held in the evening session...