The finals and the qualifying heats of the women's 100 metre breaststroke event at the 1998 World Aquatics Championships were held on Tuesday 1998-01-13 in Perth, Western Australia.
| Women's 100 metre breaststroke at the 1998 FINA World Championships | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Date | 13 January 1998 | |||||||||
| Winning time | 1 minute 08.42 seconds | |||||||||
| Medalists | ||||||||||
| ||||||||||
A Final
edit| Rank | Name | Time |
|---|---|---|
 |
 Kristy Kowal (USA) |
1:08.42 |
 |
 Helen Denman (AUS) |
1:08.51 |
 |
 Lauren van Oosten (CAN) |
1:08.66 |
| 4 |  Ágnes Kovács (HUN) |
1:08.68 |
| 5 |  Penelope Heyns (RSA) |
1:08.77 |
| 6 | Samantha Riley (AUS) |
1:08.80 |
| 7 |  Svitlana Bondarenko (UKR) |
1:09.11 |
| 8 |  Brigitte Becue (BEL) |
1:09.16 |
B Final
edit| Rank | Name | Time |
|---|---|---|
| 9 |  Dagmara Ajnenkiel (POL) |
1:10.20 |
| 10 |  Zhang Yi (CHN) |
1:10.20 |
| 11 |  Masami Tanaka (JPN) |
1:10.75 |
| 12 | Alicja Pęczak (POL) |
1:10.76 |
| 13 |  Sylvia Gerasch (GER) |
1:11.11 |
| 14 | Tara Sloan (CAN) |
1:11.45 |
| 15 |  Vera Lischka (AUT) |
1:11.79 |
| 16 | Sarah Poewe (RSA) |
1:12.61 |