| Birth Date: | 10 October 1957 |
| Birth Place: | Oosterhout, the Netherlands |
| Death Date: | 20 January 2005 (aged 47) |
| Death Place: | Waldenburg, Baden-Württemberg, Germany |
| Sport: | Swimming |
| Show-Medals: | yes |
Christel Justen (pronounced as /de/; 10 October 1957 – 20 January 2005) was a German breaststroke swimmer who won one gold and one silver medal at the 1974 European Aquatics Championships. The same year she set a new world record in the 100 m breastroke event and was selected as the German Sportspersonality of the Year.
She retired soon after 1974 to focus on her studies and later worked as a sports coach and physiotherapist. It was later revealed in 1993 that as a teenager she was given anabolic steroids by her coach without knowledge or consent of her parents. She died of natural causes, aged 47.