  I discuss the effects of QCD radiative corrections in Supersymmetric
theories. After summarizing the SUSY--QCD lagrangian in the Minimal
Supersymmetric extension of the Standard Model, I will discuss the new features
introduced by SUSY, and the main complications compared to standard QCD
corrections. I will then discuss a few examples of QCD calculations in SUSY
theories, for standard processes and for processes involving SUSY particles
including the extended Higgs sector. [Talk given at "QCD 97", Montpellier 3-9
July 1997.]
