TheSwimming competition of the 10thFINA World Aquatics Championships consisted of 40long course (50 m) events, swum July 20–27, 2003 inBarcelona, Spain.^[1][2] Swimming's 40 events were split evenly between males and females (20 each) and were:

• freestyle (free): 50, 100, 200, 400, 800 and 1500;
• backstroke (back): 50, 100 and 200;
• breaststroke (breast): 50, 100 and 200;
• butterfly (fly): 50, 100 and 200;
• Individual Medley (IM): 200 and 400; and
• relay: 4 × 100 and 4 × 200 freestyle, and 4 × 100 medley.

Event	Gold		Silver		Bronze
50 m free  details	Alexander Popov   Russia	21.92 CR	Mark Foster   Great Britain	22.20	Pieter van den Hoogenband   Netherlands	22.29
100 m free  details	Alexander Popov   Russia	48.42	Pieter van den Hoogenband   Netherlands	48.68	Ian Thorpe   Australia	48.77
200 m free  details	Ian Thorpe   Australia	1:45.14	Pieter van den Hoogenband   Netherlands	1:46.43	Grant Hackett   Australia	1:46.85
400 m free  details	Ian Thorpe   Australia	3:42.58	Grant Hackett   Australia	3:45.17	Dragoş Coman   Romania	3:46.87 NR
800 m free  details	Grant Hackett   Australia	7:43.82	Larsen Jensen   USA	7:48.09 AM	Igor Chervynskyi   Ukraine	7:53.15 NR
1500 m free  details	Grant Hackett   Australia	14:43.14	Igor Chervynskyi   Ukraine	15:01.04 NR	Erik Vendt   USA	15:01.28
50 m back  details	Thomas Rupprath   Germany	24.80 WR	Matt Welsh   Australia	25.01	Gerhard Zandberg   South Africa	25.07
100 m back  details	Aaron Peirsol   USA	53.61 CR	Arkady Vyatchanin   Russia Matt Welsh   Australia	53.92	not awarded
200 m back  details	Aaron Peirsol   USA	1:55.92	Gordan Kožulj   Croatia	1:57.47 NR	Simon Dufour   France	1:57.90
50 m breast  details	James Gibson   Great Britain	27.56	Oleg Lisogor   Ukraine	27.74	Mihály Flaskay   Hungary	27.79
100 m breast  details	Kosuke Kitajima   Japan	59.78 WR	Brendan Hansen   USA	1:00.21	James Gibson   Great Britain	1:00.37
200 m breast  details	Kosuke Kitajima   Japan	2:09.42 WR	Ian Edmond   Great Britain	2:10.92	Brendan Hansen   USA	2:11.11
50 m fly  details	Matt Welsh   Australia	23.43 WR	Ian Crocker   USA	23.62	Yevgeny Korotyshkin   Russia	23.73
100 m fly  details	Ian Crocker   USA	50.98 WR	Michael Phelps   USA	51.10	Andrei Serdinov   Ukraine	51.59 ER
200 m fly  details	Michael Phelps   USA	1:54.35	Takashi Yamamoto   Japan	1:55.52	Tom Malchow   USA	1:55.66
200 m IM  details	Michael Phelps   USA	1:56.04 WR	Ian Thorpe   Australia	1:59.66 OC	Massimiliano Rosolino   Italy	1:59.71
400 m IM  details	Michael Phelps   USA	4:09.09 WR	László Cseh   Hungary	4:10.79 ER	Oussama Mellouli   Tunisia	4:15.36 AF
4 × 100 m   free relay details	Russia  Andrei Kapralov  Ivan Usov  Denis Pimankov  Alexander Popov	3:14.06 CR,ER	USA  Scott Tucker  Neil Walker  Ryan Wochomurka  Jason Lezak	3:14.80	France  Romain Barnier  Julien Sicot  Fabien Gilot  Frédérick Bousquet	3:15.66 NR
4 × 200 m   free relay details	Australia  Grant Hackett  Craig Stevens  Nicholas Sprenger  Ian Thorpe	7:08.58	USA  Michael Phelps  Nate Dusing  Aaron Peirsol  Klete Keller	7:10.26 AM	Germany  Johannes Oesterling  Lars Conrad  Stefan Herbst  Christian Keller	7:14.02
4 × 100 m   medley relay details	USA  Aaron Peirsol  Brendan Hansen  Ian Crocker  Jason Lezak	3:31.54 WR	Russia  Arkady Vyatchanin  Roman Ivanovski  Igor Marchenko  Alexander Popov	3:34.72 ER	Japan  Tomomi Morita  Kosuke Kitajima  Takashi Yamamoto  Daisuke Hosokawa	3:36.12 AS

Legend:WR –World Record;CR –Championship Record

Event	Gold		Silver		Bronze
50 m free  details	Inge de Bruijn   Netherlands	24.47	Alice Mills   Australia	25.07	Libby Lenton   Australia	25.08
100 m free  details	Hanna-Maria Seppälä   Finland	54.37	Jodie Henry   Australia	54.58	Jenny Thompson   USA	54.65
200 m free  details	Alena Popchanka   Belarus	1:58.32	Martina Moravcová   Slovakia	1:58.44	Yang Yu   China	1:58.54
400 m free  details	Hannah Stockbauer   Germany	4:06.75	Éva Risztov   Hungary	4:07.24	Diana Munz   USA	4:07.67
800 m free  details	Hannah Stockbauer   Germany	8:23.66 CR	Diana Munz   USA	8:24.19	Rebecca Cooke   Great Britain	8:28.45
1500 m free  details	Hannah Stockbauer   Germany	16:00.18 CR,NR	Hayley Peirsol   USA	16:09.64	Jana Henke   Germany	16:10.13
50 m back  details	Nina Zhivanevskaya   Spain	28.48 CR	Ilona Hlaváčková   Czech Republic	28.50	Noriko Inada   Japan	28.62
100 m back  details	Antje Buschschulte   Germany	1:00.50	Louise Ørnstedt   Denmark Katy Sexton   Great Britain	1:00.86	not awarded
200 m back  details	Katy Sexton   Great Britain	2:08.74	Margaret Hoelzer   USA	2:09.24	Stanislava Komarova   Russia	2:10.17
50 m breast  details	Luo Xuejuan   China	30.67	Brooke Hanson   Australia	31.13	Zoë Baker   Great Britain	31.37
100 m breast  details	Luo Xuejuan   China	1:06.80	Amanda Beard   USA	1:07.42	Leisel Jones   Australia	1:07.47
200 m breast  details	Amanda Beard   USA	2:22.99 =WR	Leisel Jones   Australia	2:24.33 OC	Qi Hui   China	2:25.78
50 m fly  details	Inge de Bruijn   Netherlands	25.84 CR	Jenny Thompson   USA	26.00	Anna-Karin Kammerling   Sweden	26.06
100 m fly  details	Jenny Thompson   USA	57.96 CR	Otylia Jędrzejczak   Poland	58.22	Martina Moravcová   Slovakia	58.24
200 m fly  details	Otylia Jędrzejczak   Poland	2:07.56	Éva Risztov   Hungary	2:07.68	Yuko Nakanishi   Japan	2:08.08
200 m IM  details	Yana Klochkova   Ukraine	2:10.75	Alice Mills   Australia	2:12.75 OC	Zhou Yafei   China	2:12.92
400 m IM  details	Yana Klochkova   Ukraine	4:36.74	Éva Risztov   Hungary	4:37.39	Beatrice Câșlaru   Romania	4:41.86
4 × 100 m   free relay details	USA  Natalie Coughlin  Lindsay Benko  Rhi Jeffrey  Jenny Thompson	3:38.09	Germany  Petra Dallmann  Katrin Meissner  Antje Buschschulte  Sandra Völker	3:38.73	Australia  Libby Lenton  Elka Graham  Jodie Henry  Alice Mills	3:38.83 OC
4 × 200 m   free relay details	USA  Lindsay Benko  Rachel Komisarz  Rhi Jeffrey  Diana Munz	7:55.70 CR,AM	Australia  Elka Graham  Linda Mackenzie  Kirsten Thomson  Alice Mills	7:58.42 OC	China  Zhou Yafei  Xu Yanwei  Pang Jiaying  Yang Yu	7:58.53
4 × 100 m   medley relay details	China  Zhan Shu  Luo Xuejuan  Zhou Yafei  Yang Yu	3:59.89 CR,AS	USA  Natalie Coughlin  Amanda Beard  Jenny Thompson  Lindsay Benko	4:00.83	Australia  Giaan Rooney  Leisel Jones  Jessicah Schipper  Jodie Henry	4:01.37

Legend:WR –World Record;CR –Championship Record

  *   Host nation (Spain)

Rank	Nation	Gold	Silver	Bronze	Total
1	United States (USA)	11	12	5	28
2	Australia (AUS)	6	10	6	22
3	Germany (GER)	5	1	2	8
4	Russia (RUS)	3	2	2	7
5	China (CHN)	3	0	4	7
6	Great Britain (GBR)	2	3	3	8
7	Ukraine (UKR)	2	2	2	6
8	Netherlands (NED)	2	2	1	5
9	Japan (JPN)	2	1	3	6
10	Poland (POL)	1	1	0	2
11	Belarus (BLR)	1	0	0	1
	Finland (FIN)	1	0	0	1
	Spain (ESP)*	1	0	0	1
14	Hungary (HUN)	0	4	1	5
15	Slovakia (SVK)	0	1	1	2
16	Croatia (CRO)	0	1	0	1
	Czech Republic (CZE)	0	1	0	1
	Denmark (DEN)	0	1	0	1
19	France (FRA)	0	0	2	2
	Romania (ROU)	0	0	2	2
21	Italy (ITA)	0	0	1	1
	South Africa (RSA)	0	0	1	1
	Sweden (SWE)	0	0	1	1
	Tunisia (TUN)	0	0	1	1
Totals (24 entries)		40	42	38	120

• Swimming at the 2003 World Aquatics Championships
• 2003 World Aquatics Championships
• 2003 in swimming
• Swimming at the World Aquatics Championships

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