The search for physics beyond the Standard Model is one of the
primary motivations for the Run II at the Tevatron.  The CDF collaboration
has been very active in this field by searching in a variety of final states
for signals of new physics processes.  The observation of no significant
deviation from the Standard Model has led to limits on the cross-sections of
the considered processes, which, in turn, have been used to constrain
several models that predict such new physics scenarios.