| Competition | 1991 World Aquatics Championships | 
|---|---|
| Venue | 
Perth
 | 
| Held | — | 
| Status | Unofficial | 
| Competitors | 45 | 
| Countries | 10 | 
| Pos | Athlete(s) | Country | Preliminary Round | Final | ||
|---|---|---|---|---|---|---|
| 1 | Germany | 1:32.12 (1 h1)  | 
1:30.68 (1 F)  | 
|||
| Nils Rudolph | — | 22.96 | ||||
| Dirk Richter | 23.47 | 22.42 | ||||
| Bengt Zikarsky | 22.68 | 22.49 | ||||
| Christian Tröger | 22.85 | 22.81 | ||||
| Jochen Bruha | 23.12 | — | * | |||
| 2 | Canada | 1:34.57 (2 h2)  | 
1:34.26 (2 F)  | 
|||
| Dean Kondziolka | — | 23.57 | ||||
| Darren Ward | — | 24.82 | ||||
| Paul Szekula | — | 21.73 | ||||
| Eddie Parenti | — | 24.14 | ||||
| Gary Vandermeulen | 24.00 | — | * | |||
| Stephane Hebert | 23.41 | — | * | |||
| Sandy Goss | 23.42 | — | * | |||
| Turlough O'Hare | 23.74 | — | * | |||
| 3 | Norway | 1:35.40 (3 h2)  | 
1:34.97 (3 F)  | 
|||
| Jarl Inge Melberg | 23.86 | 23.82 | ||||
| Christer Kjølholdt | 23.62 | 24.57 | ||||
| Trond Høines | 24.10 | 22.61 | ||||
| Bengt Staveland | 23.82 | 23.97 | ||||
| 4 | Puerto Rico | 1:36.81 (2 h1)  | 
1:36.23 (4 F)  | 
|||
| Todd Torres | 23.24 | 24.03 | ||||
| René Santaella | 24.12 | 24.36 | ||||
| Jorge Herrera | 25.06 | 24.29 | ||||
| Manuel Guzmán | 24.39 | 23.55 | ||||
| 5 | New Zealand | 1:36.21 (4 h2)  | 
1:36.47 (5 F)  | 
|||
| Nick Sanders | 22.82 | 23.77 | ||||
| Danyon Loader | 25.29 | 24.68 | ||||
| Simon Percy | 23.95 | 24.40 | ||||
| John Steel | 24.15 | 23.62 | ||||
| 6 | Indonesia | 1:38.41 (3 h1)  | 
1:38.26 (6 F)  | 
|||
| Richard Bera | 24.32 | 23.99 | ||||
| Albert Sutanto | 25.23 | 24.40 | ||||
| Wolfry Purnomo | 24.26 | 25.41 | ||||
| Wisnu Wardhana | 24.60 | 24.46 | ||||
| 7 | Portugal | 1:40.95 (4 h1)  | 
1:41.65 (7 F)  | 
|||
| Paulo Trindade | 24.07 | 24.04 | ||||
| Paulo Camacho | 23.93 | 24.35 | ||||
| Artur Costa | 26.76 | 26.37 | ||||
| Diogo Madeira | 26.19 | 26.89 | ||||
| 8 | Chinese Taipei | 1:43.42 (5 h2)  | 
1:43.29 (8 F)  | 
|||
| Hsu Feng-Ming | 26.08 | 26.13 | ||||
| Lee Shih-Hung | 25.82 | 25.56 | ||||
| Tsai Hsin-Yen | 26.37 | 26.22 | ||||
| Chen Chun-Hung | 25.15 | 25.38 | ||||
| 9 | Australia | 1:33.81 (1 h2)  | 
— | |||
| Jason Cooper | 24.26 | — | ||||
| Darren Lange | 23.09 | — | ||||
| Chris Fydler | 23.24 | — | ||||
| Matthew Renshaw | 23.22 | — | ||||
| 10 | San Marino | 1:44.17 (5 h1)  | 
— | |||
| Filippo Piva | 26.31 | — | ||||
| Daniele Piva | 26.29 | — | ||||
| Roberto Pellandra | 26.24 | — | ||||
| Michele Piva | 25.33 | — | 
| Pos | Athlete(s) | Country | Mark | |
|---|---|---|---|---|
| 1 | Germany | 1:32.12 | ||
| Nils Rudolph | — | |||
| Dirk Richter | 23.47 | |||
| Bengt Zikarsky | 22.68 | |||
| Christian Tröger | 22.85 | |||
| Jochen Bruha | 23.12 | |||
| 2 | Puerto Rico | 1:36.81 | ||
| Todd Torres | 23.24 | |||
| René Santaella | 24.12 | |||
| Jorge Herrera | 25.06 | |||
| Manuel Guzmán | 24.39 | |||
| 3 | Indonesia | 1:38.41 | ||
| Richard Bera | 24.32 | |||
| Albert Sutanto | 25.23 | |||
| Wolfry Purnomo | 24.26 | |||
| Wisnu Wardhana | 24.60 | |||
| 4 | Portugal | 1:40.95 | ||
| Paulo Trindade | 24.07 | |||
| Paulo Camacho | 23.93 | |||
| Artur Costa | 26.76 | |||
| Diogo Madeira | 26.19 | |||
| 5 | San Marino | 1:44.17 | ||
| Filippo Piva | 26.31 | |||
| Daniele Piva | 26.29 | |||
| Roberto Pellandra | 26.24 | |||
| Michele Piva | 25.33 | 
| Pos | Athlete(s) | Country | Mark | |
|---|---|---|---|---|
| 1 | Australia | 1:33.81 | ||
| Jason Cooper | 24.26 | |||
| Darren Lange | 23.09 | |||
| Chris Fydler | 23.24 | |||
| Matthew Renshaw | 23.22 | |||
| 2 | Canada | 1:34.57 | ||
| Dean Kondziolka | — | |||
| Darren Ward | — | |||
| Paul Szekula | — | |||
| Eddie Parenti | — | |||
| Gary Vandermeulen | 24.00 | |||
| Stephane Hebert | 23.41 | |||
| Sandy Goss | 23.42 | |||
| Turlough O'Hare | 23.74 | |||
| 3 | Norway | 1:35.40 | ||
| Jarl Inge Melberg | 23.86 | |||
| Christer Kjølholdt | 23.62 | |||
| Trond Høines | 24.10 | |||
| Bengt Staveland | 23.82 | |||
| 4 | New Zealand | 1:36.21 | ||
| Nick Sanders | 22.82 | |||
| Danyon Loader | 25.29 | |||
| Simon Percy | 23.95 | |||
| John Steel | 24.15 | |||
| 5 | Chinese Taipei | 1:43.42 | ||
| Hsu Feng-Ming | 26.08 | |||
| Lee Shih-Hung | 25.82 | |||
| Tsai Hsin-Yen | 26.37 | |||
| Chen Chun-Hung | 25.15 | 
| Pos | Athlete(s) | Country | Mark | |
|---|---|---|---|---|
| 1 | Germany | 1:30.68 | ||
| Nils Rudolph | 22.96 | |||
| Dirk Richter | 22.42 | |||
| Bengt Zikarsky | 22.49 | |||
| Christian Tröger | 22.81 | |||
| Jochen Bruha | — | |||
| 2 | Canada | 1:34.26 | ||
| Dean Kondziolka | 23.57 | |||
| Darren Ward | 24.82 | |||
| Paul Szekula | 21.73 | |||
| Eddie Parenti | 24.14 | |||
| Gary Vandermeulen | — | |||
| Stephane Hebert | — | |||
| Sandy Goss | — | |||
| Turlough O'Hare | — | |||
| 3 | Norway | 1:34.97 | ||
| Jarl Inge Melberg | 23.82 | |||
| Christer Kjølholdt | 24.57 | |||
| Trond Høines | 22.61 | |||
| Bengt Staveland | 23.97 | |||
| 4 | Puerto Rico | 1:36.23 | ||
| Todd Torres | 24.03 | |||
| René Santaella | 24.36 | |||
| Jorge Herrera | 24.29 | |||
| Manuel Guzmán | 23.55 | |||
| 5 | New Zealand | 1:36.47 | ||
| Nick Sanders | 23.77 | |||
| Danyon Loader | 24.68 | |||
| Simon Percy | 24.40 | |||
| John Steel | 23.62 | |||
| 6 | Indonesia | 1:38.26 | ||
| Richard Bera | 23.99 | |||
| Albert Sutanto | 24.40 | |||
| Wolfry Purnomo | 25.41 | |||
| Wisnu Wardhana | 24.46 | |||
| 7 | Portugal | 1:41.65 | ||
| Paulo Trindade | 24.04 | |||
| Paulo Camacho | 24.35 | |||
| Artur Costa | 26.37 | |||
| Diogo Madeira | 26.89 | |||
| 8 | Chinese Taipei | 1:43.29 | ||
| Hsu Feng-Ming | 26.13 | |||
| Lee Shih-Hung | 25.56 | |||
| Tsai Hsin-Yen | 26.22 | |||
| Chen Chun-Hung | 25.38 |