| Jacqueline Alex | |
| Birth Date: | 1 December 1965 |
| Birth Place: | Zwickau, Germany |
| Sport: | Swimming |
| Club: | SC Turbine Erfur |
| Show-Medals: | yes |
Jacqueline Alex (later Kiewel, born 1 December 1965) is a retired German swimmer. In 1985 she won a national title and a European gold medal in the 200 m butterfly at the European championships.
After retiring from swimming she worked as a physiotherapist at her own company.