Qualification rounds of the Women's 100 metre butterfly at the 1958 European Aquatics Championships were held on 3 September. Final took place on 4 September. There were 17 competitors.
| Name | Nationality | Result | Place | Date | |
|---|---|---|---|---|---|
| World record | Nancy Ramey | 1:09.6 | Los Angeles | 28 June 1958. | |
| European record | Atie Voorbij | | 1:10.5 | Rhenen | 4 August 1957 |
There was a new record during the competition:
| European Championship record | final | | 1:11.9 | Budapest, Hungary | 4 September |
| Position | Race | Name | Nationality | Result | Other |
|---|---|---|---|---|---|
| 1. | 1 | Tineke Lagerberg | | 1:12.6 | Q |
| 2. | 3 | Atie Voorbij | | 1:12.9 | Q |
| 3. | 2 | Marta Skupilová | | 1:14.1 | Q |
| 4. | 2 | Jean Oldroyd | | 1:14.8 | Q |
| 5. | 2 | Christine Gosden | | 1:15.0 | Q |
| 6. | 1 | Kristina Larsson | | 1:15.3 | Q |
| 7. | 1 | Jutta Langenau | | 1:15.6 | Q |
| 7. | 3 | Brigitta Lindquist | | 1:15.6 | Q |
| 9. | 2 | Galina Kamajeva | | 1:15.9 | |
| 10. | 3 | Renate Wrann | | 1:16.0 | |
| 10. | 3 | Valentyina Poznyjak | | 1:16.0 | |
| 12. | 1 | Mária Littomeritzky | | 1:17.7 | |
| 13. | 2 | Annie Caron | | 1:21.7 | |
| 14. | 3 | Paola Saini | | 1:22.3 | |
| 15. | 1 | Marcela Jelínková | | 1:22.7 | |
| 15. | 2 | Anna Beneck | | 1:22.7 | |
| 17. | 1 | Gizella Gebhardt | | 1:23.8 |
| Position | Line | Name | Nationality | Result | Other |
|---|---|---|---|---|---|
| | 4 | Tineke Lagerberg | | 1:11,9 | ECR |
| | 5 | Atie Voorbij | | 1:12.1 | |
| | 3 | Marta Skupilová | | 1:14.3 | |
| 4. | 2 | Christine Gosden | | 1:14.3 | |
| 5. | 1 | Jutta Langenau | | 1:14.3 | |
| 6. | 7 | Kristina Larsson | | 1:15.1 | |
| 7. | 6 | Jean Oldroyd | | 1:15.9 | |
| 8. | 8 | Brigitta Lindquist | | 1:15.9 | |