  The present status of the problem of neutrino mass, mixing and neutrino
oscillations is briefly summarized. The evidence for oscillations of
atmospheric neutrinos found recently in the Super-Kamiokande experiment is
discussed. Indications in favor of neutrino oscillations obtained in solar
neutrino experiments and in the accelerator LSND experiment are also
considered. Implications of existing neutrino oscillation data for neutrino
masses and mixing are discussed.
