Swimming at the 1998 World Aquatics Championships – Men's 100 metre breaststroke
# Swimming at the 1998 World Aquatics Championships – Men's 100 metre breaststroke

The finals and the qualifying heats of the men's 100 metre breaststroke event at the 1998 World Aquatics Championships were held on Monday 12 January 1998 in Perth, Western Australia.

## A Final

| Rank | Name | Time |
| - | - | - |
| | Frédérik Deburghgraeve (BEL) | 1:01.34 |
| | Zeng Qiliang (CHN) | 1:01.76 |
| | Kurt Grote (USA) | 1:01.93 |
| 4 | Phil Rogers (AUS) | 1:02.01 |
| 5 | Domenico Fioravanti (ITA) | 1:02.13 |
| 6 | Simon Cowley (AUS) | 1:02.47 |
| 7 | Károly Güttler (HUN) | 1:02.53 |
| 8 | Mark Warnecke (GER) | 1:03.11 |

## B Final

| Rank | Name | Time |
| - | - | - |
| 9 | Jens Kruppa (GER) | 1:02.62 |
| 10 | Daniel Málek (CZE) | 1:03.09 |
| 11 | Andrey Korneyev (RUS) | 1:03.15 |
| 12 | Aleksandr Gukov (BLR) | 1:03.16 |
| 13 | Richard Maden (GBR) | 1:03.27 |
| 14 | Benno Kuipers (NED) | 1:03.31 |
| 15 | Patrick Schmollinger (AUT) | 1:03.33 |
| 16 | Jeremy Linn (USA) | 1:03.54 |

## Qualifying heats

| Rank | Name | Time |
| - | - | - |
| 1 | Frédérik Deburghgraeve (BEL) | 1:01.99 |
| 2 | Domenico Fioravanti (ITA) | 1:02.18 |
| 3 | Kurt Grote (USA) | 1:02.22 |
| 4 | Zeng Qiliang (CHN) | 1:02.34 |
| 5 | Phil Rogers (AUS) | 1:02.45 |
| 6 | Simon Cowley (AUS) | 1:02.48 |
| 7 | Károly Güttler (HUN) | 1:02.75 |
| 8 | Mark Warnecke (GER) | 1:02.83 |
| 9 | Jeremy Linn (USA) | 1:02.84 |
| 10 | Jens Kruppa (GER) | 1:02.85 |
| 11 | Benno Kuipers (NED) | 1:02.92 |
| 12 | Richard Maden (GBR) | 1:02.99 |
| 13 | Patrick Schmollinger (AUT) | 1:03.00 |
| 14 | Andrey Korneyev (RUS) | 1:03.01 |
| 15 | Aleksandr Gukov (BLR) | 1:03.19 |
| 16 | Daniel Málek (CZE) | 1:03.27 |
| 17 | Norbert Rózsa (HUN) | 1:03.30 |
| 18 | Darren Mew (GBR) | 1:03.36 |
| 19 | Jean-Christophe Sarnin (FRA) | 1:03.37 |
| 20. | Cho Kwang-Jea (KOR) | 1:03.41 |
| 20. | Morgan Knabe (CAN) | 1:03.41 |
| 22 | Marc Capdevila (ESP) | 1:03.67 |
| 23 | Yoshinobu Miyazaki (JPN) | 1:03.69 |
| 24 | Marek Krawczyk (POL) | 1:03.91 |
| 25 | Stéphan Perrot (FRA) | 1:03.92 |
| 26 | José Couto (POR) | 1:04.11 |
| 27 | Patrik Isaksson (SWE) | 1:04.12 |
| 28 | Roman Ivanovsky (RUS) | 1:04.21 |
| 29 | Alwin de Prins (LUX) | 1:04.48 |
| 30 | Jorge Arias (PER) | 1:05.20 |
| 31 | Steven Ferguson (NZL) | 1:05.35 |
| 32 | Francisco Suriano (ESA) | 1:05.38 |
| 33 | Arsenio López (PUR) | 1:05.45 |
