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In this review we discuss how the models of neutrino masses can accommodatesolutions to the problem of matter-antimatter asymmetry in the universe, darkenergy or cosmological constant problem and dark matter candidates. Thematter-antimatter asymmetry is explained by leptogenesis, originating from thelepton number violation associated with the neutrino masses. The dark energyproblem is correlated with a mass varying neutrinos, which could originate froma pseudo-Nambu-Goldstone boson. In some radiative models of neutrino masses,there exists a Higgs doublet that does not acquire any vacuum expectationvalue. This field could be inert and the lightest inert particle could then bea dark matter candidate. We reviewed these scenarios in connection with modelsof neutrino masses with right-handed neutrinos and with triplet Higgs scalars.

Leptogenesis, Dark Energy, Dark Matter and the neutrinos