  The classical resistance of a contact between a ferromagnet (F) and a
superconductor (S) acquires an additional contact term as compared to the
contact between a ferromagnet and a normal metal. The necessity to match
spin-polarized current in a ferromagnet to spin-less current in the
superconductor results in the accumulation of non-equilibrium polarization near
the F/S interface. In the present work, we show that the weak localization
correction to the classical diffusion coefficient, $\delta D$, is dependent on
the degree of polarization, with majority spins more likely to be reflected
from the interface than minority spins. Taking into account the change in the
spin polarized particle distribution in the F wire arising from $\delta D$, we
calculate the weak localization correction to the F/S contact resistance.
