The Tevatron experiments have measured top quark properties in
addition to the top quark mass and pair production cross section.  These
measurements are based on 110 pb^-1 of ppbar collisions at sqrt s = 1.8 TeV
recorded by CDF and 125 pb^-1 of data recorded by B0 during the years
1992-95.  We describe two separate techniques which exploit the top data
samples to exclude large branching fractions of the top quark to a charged
Higgs boson.  We also determine the fraction of longitudinal W bosons produced
in top quark decays to be 0.55 +/- 0.34, compared to the standard model
prediction of 0.71.  Other top branching fraction measurements, kinematic
studies, and searches for rare decays are summarized.