  We study the one-loop supersymmetric contributions to lepton-flavor violating
$Z$ -boson decays in a fully left-right symmetric model. In addition to
right-handed scalar neutrinos, the decays could receive important contributions
from doubly-charged triplet Higgsinos which couple to leptons only. We find
that the decay widths reach present experimental bounds and discuss mass
constraints for the contributing supersymmetric partners.
