  NA62, an experiment at the CERN SPS to measure the branching ratio for the
decay K+ -> pi+ nu nu-bar with ~10% precision, will observe ~10^13 K+ decays in
its fiducial volume, and will thus also be able to carry out a rich program to
search for forbidden K+ and pi0 decays, including in particular K+ decays that
violate the conservation of lepton flavor and/or number. NA62's potential
performance in searches for a number of forbidden K+ and pi0 decays is
discussed, with initial sensitivity estimates.
