The 1991 World Aquatics Championships took place at the Claremont Superdrome in Perth, Western Australia from 3 to 13 January 1991 with 1142 participating athletes.

Place	Nation				Total
1	United States	17	11	6	34
2	China	8	3	2	13
3	Hungary	5	2	2	9
4	Germany	4	9	9	22
5	Australia	3	5	2	10
6	Netherlands	2	1	1	4
7	Soviet Union	1	3	6	10
8	Canada	1	3	1	5
9	Italy	1	2	4	7
10	Spain	1	1	1	3
11	Suriname	1	0	0	1
	Yugoslavia	1	0	0	1
13	Japan	0	2	3	5
14	France	0	2	1	3
15	Great Britain	0	1	1	2
16	Sweden	0	1	0	1
17	Denmark	0	0	2	2
	Poland	0	0	2	2
19	Czechoslovakia	0	0	1	1
Total		45	46	44	135

Men

Event	Gold	Silver	Bronze
1 m springboard	Edwin Jongejans (NED)	Mark Lenzi (USA)	Wang Yijie (CHN)
3 m springboard	Kent Ferguson (USA)	Tan Liangde (CHN)	Albin Killat (GER)
10 m platform	Sun Shuwei (CHN)	Xiong Ni (CHN)	Georgiy Chogovadze (URS)

Women

Event	Gold	Silver	Bronze
1 m springboard	Gao Min (CHN)	Wendy Lucero (USA)	Heidemarie Bártová (TCH)
3 m springboard	Gao Min (CHN)	Irina Lashko (URS)	Brita Baldus (GER)
10 m platform	Fu Mingxia (CHN)	Yelena Miroshina (URS)	Wendy Lian Williams (USA)

Men

Event	Gold	Silver	Bronze
25 km	Chad Hundeby (USA)	Sergio Chariandini (ITA)	David O'Brien (AUS)

Women

Event	Gold	Silver	Bronze
25 km	Shelley Taylor-Smith (AUS)	Martha Jahn (USA)	Karen Burton (USA)

Men

Event	Gold	Silver	Bronze
50 m freestyle	Tom Jager (USA)	Matt Biondi (USA)	Gennadiy Prigoda (URS)
100 m freestyle	Matt Biondi (USA)	Tommy Werner (SWE)	Giorgio Lamberti (ITA)
200 m freestyle	Giorgio Lamberti (ITA)	Steffen Zesner (GER)	Artur Wojdat (POL)
400 m freestyle	Jörg Hoffmann (GER)	Stefan Pfeiffer (GER)	Artur Wojdat (POL)
1500 m freestyle	Jörg Hoffmann (GER)	Kieren Perkins (AUS)	Stefan Pfeiffer (GER)
100 m backstroke	Jeff Rouse (USA)	Mark Tewksbury (CAN)	Martin López (ESP)
200 m backstroke	Martin López (ESP)	Stefano Battistelli (ITA)	Vladimir Selkov (URS)
100 m breaststroke	Norbert Rózsa (HUN)	Adrian Moorhouse (GBR)	Gianni Minervini (ITA)
200 m breaststroke	Mike Barrowman (USA)	Norbert Rózsa (HUN)	Nick Gillingham (GBR)
100 m butterfly	Anthony Nesty (SUR)	Michael Groß (GER)	Vladislav Kulikov (URS)
200 m butterfly	Melvin Stewart (USA)	Michael Groß (GER)	Tamás Darnyi (HUN)
200 m individual medley	Tamás Darnyi (HUN)	Eric Namesnik (USA)	Christian Geßner (GER)
400 m individual medley	Tamás Darnyi (HUN)	Eric Namesnik (USA)	Stefano Battistelli (ITA)
4 × 100 m freestyle relay	United States (USA) Tom Jager Brent Lang Doug Gjertsen Matt Biondi	Germany (GER) Peter Sitt Dirk Richter Steffen Zesner Bengt Zikarsky	Soviet Union (URS) Gennadiy Prigoda Yuriy Bashkatov Veniamin Tayanovich Volodymyr Tkachenko
4 × 200 m freestyle relay	Germany (GER) Peter Sitt Steffen Zesner Stefan Pfeiffer Michael Groß	United States (USA) Troy Dalbey Melvin Stewart Dan Jorgensen Doug Gjertsen	Italy (ITA) Emanuele Idini Roberto Gleria Stefano Battistelli Giorgio Lamberti
4 × 100 m medley relay	United States (USA) Jeff Rouse Eric Wunderlich Mark Henderson Matt Biondi	Soviet Union (URS) Vladimir Shemetov Dmitriy Volkov Vladislav Kulikov Veniamin Tayanovich	Germany (GER) Frank Hoffmeister Christian Poswiat Michael Groß Dirk Richter

Women

Event	Gold	Silver	Bronze
50 m freestyle	Zhuang Yong (CHN)	Leigh Ann Fetter (USA)	—
		Catherine Plewinski (FRA)
100 m freestyle	Nicole Haislett (USA)	Catherine Plewinski (FRA)	Zhuang Yong (CHN)
200 m freestyle	Hayley Lewis (AUS)	Janet Evans (USA)	Mette Jacobsen (DEN)
400 m freestyle	Janet Evans (USA)	Hayley Lewis (AUS)	Suzu Chiba (JPN)
800 m freestyle	Janet Evans (USA)	Grit Müller (GER)	Jana Henke (GER)
100 m backstroke	Krisztina Egerszegi (HUN)	Tünde Szabó (HUN)	Janie Wagstaff (USA)
200 m backstroke	Krisztina Egerszegi (HUN)	Dagmar Hase (GER)	Janie Wagstaff (USA)
100 m breaststroke	Linley Frame (AUS)	Jana Dörries (GER)	Yelena Volkova (URS)
200 m breaststroke	Yelena Volkova (URS)	Linley Frame (AUS)	Jana Dörries (GER)
100 m butterfly	Hong Qian (CHN)	Wang Xiaohong (CHN)	Catherine Plewinski (FRA)
200 m butterfly	Summer Sanders (USA)	Rie Shito (JPN)	Hayley Lewis (AUS)
200 m individual medley	Lin Li (CHN)	Summer Sanders (USA)	Daniela Hunger (GER)
400 m individual medley	Lin Li (CHN)	Hayley Lewis (AUS)	Summer Sanders (USA)
4 × 100 m freestyle relay	United States (USA) Nicole Haislett Julie Cooper Whitney Hedgepeth Jenny Thompson	Germany (GER) Simone Osygus Kerstin Kielgaß Karen Seick Manuela Stellmach	Netherlands (NED) Mildred Muis Inge de Bruijn Marianne Muis Karin Brienesse
4 × 200 m freestyle relay	Germany (GER) Kerstin Kielgaß Manuela Stellmach Dagmar Hase Stephanie Ortwig	Netherlands (NED) Marianne Muis Manon Masseurs Mildred Muis Karin Brienesse	Denmark (DEN) Gitta Jensen Berit Puggaard Annette Povlsen Mette Jacobsen
4 × 100 m medley relay	United States (USA) Janie Wagstaff Tracey McFarlane Crissy Ahmann-Leighton Nicole Haislett	Australia (AUS) Nicole Livingstone Linley Frame Susie O'Neill Karen van Wirdum	Germany (GER) Svenja Schlicht Jana Dörries Susanne Müller Manuela Stellmach

Event	Gold	Silver	Bronze
Solo routine	Sylvie Fréchette (CAN)	Kristen Babb-Sprague (USA)	Mikako Kotani (JPN)
Duet routine	Karen Josephson (USA)  Sarah Josephson (USA)	Mikako Kotani (JPN)  Aki Takayama (JPN)	Lisa Alexander (CAN)  Kathy Glen (CAN)
Team routine	United States (USA)	Canada (CAN)	Japan (JPN)

Men

Event	Gold	Silver	Bronze
Team	Yugoslavia	Spain	Hungary

Women

Event	Gold	Silver	Bronze
Team	Netherlands	Canada	United States

• FINA Official Website
• World Swimming Championship Results
• 1991 World Aquatics Championships Results Archived 3 March 2016 at the Wayback Machine (PDF)