We present recent results on top quark physics and B physics with
the Collider Detector at Fermilab (CDF).  These results come from analyses
using a full data sample at an integrated luminosity of 109 pb^-1.  We
describe the measurements of the top quark mass and the ttbar production cross
section in 1.8-TeV ppbar collisions.  We measure the top quark mass to be
175.9 +/- 6.9 GeV/c^2 and the ttbar production cross section to be 7.6^+1.8_
-1.5 pb.  We also present the measurements of the lifetimes of B-hadrons and
the time-dependent B^0-Bbar^0 mixing which results in the mass difference
between heavy and light B^0_d mesons (Delta m_d) of 0.464 +\- 0.030(stat) +\-
0.026(syst) ps^-1.