|Disqualified||1991 Tokyo||Shot put|
Early in his international career he finished twelfth at the 1985 European Indoor Championships, tenth at the 1986 European Championships, sixth at the 1988 European Indoor Championships and tenth at the 1988 Summer Olympics. He then got his international breakthrough as he won bronze medals at the 1988 IAAF Grand Prix Final, 1989 World Indoor Championships, 1989 European Indoor Championships and 1990 European Championships and a silver at the 1990 IAAF Grand Prix Final.
In 1991 he originally won the silver medal at the World Championships in Tokyo with a throw of 20.81 metres, but as he was found using anabolic steroids he was retroactively disqualified. He returned from the doping suspension to compete at the 1995 World Championships, but failed to qualify for the final round there. He became Norwegian champion in 1987, 1988, 1990 and 1995.
- Norwegian international athletes - A (Norwegian)
- NTB (18 August 1999). "Jentefesten har gitt fem norske VM-gull". VG (in Norwegian). Retrieved 2007-01-02.
- NTB (30 July 1998). "Historikk: Store norske dopingsaker". Dagbladet (in Norwegian). Retrieved 2007-01-02.
- Norwegian championships in shot put (Norwegian)
- Norwegian all-time list shot put (Norwegian)
- IAAF profile for Stian Andersen