Stefanie Biskupek-Kräker (néeKräker; 21 April 1960) is a German former gymnast who competed for East Germany at the 1976 and 1980 Olympic Games. Over her career she won four Olympic medals and six world championship medals.
Career
Kräker began competing on the GDR national team in 1976. One of her earliest senior competitions was the 1976 Summer Olympics in Montreal, where she won a team bronze medal.
Following these Olympics Kräker emerged as a major member of the GDR team. In 1977 she became the 1977 GDR national champion and won a bronze on the uneven bars at the 1977 European Championships. At the 1978 World Championships in Strasbourg she won two bronze medals: team and vault. At the 1979 World Championships in Fort Worth she again won bronze with the team and on vault.
The 1980 Olympic Games were Kräker's most successful championship; she received team and bars bronze medals and a silver medal on the vault. Kräker's last major competition was the 1981 World Championships in Moscow where she won team and vault bronze medals.