The finals and the qualifying heats of the Women's 100 metres Breaststroke event at the 1998 European Short Course Swimming Championships were held on the first day of the competition, on Friday 11 December 1998 in Sheffield, England.
| RANK | FINAL | TIME |
|---|---|---|
| 1:07.71 | ||
| 1:07.86 | ||
| 4. | 1:08.61 | |
| 5. | 1:08.85 | |
| 6. | 1:09.35 | |
| 7. | 1:09.42 | |
| RANK | HEATS RANKING | TIME | |
|---|---|---|---|
| 1. | 1:08.79 | ||
| 2. | 1:08.87 | ||
| 3. | 1:09.04 | ||
| 4. | 1:09.18 | ||
| 5. | 1:09.25 | ||
| 6. | 1:09.46 | ||
| 7. | 1:09.49 | ||
| 8. | 1:09.52 | ||
| 9. | 1:09.79 | ||
| 10. | 1:09.94 | ||
| 11. | 1:10.42 | ||
| 12. | 1:10.63 | ||
| 13. | 1:10.70 | ||
| 14. | 1:11.49 | ||
| 15. | 1:11.57 | ||
| 16. | 1:11.89 | ||
| 17. | 1:11.93 | ||
| 18. | 1:12.68 | ||
| 19. | 1:12.71 | ||
| 20. | 1:13.38 | ||
| 21. | 1:14.22 | ||
| 22. | 1:14.70 |