This volume constitutes the proceedings of the Ringberg Euroconference, which brought together 44 experimental and theoretical physicists from all over the world who are actively working in neutrino physics and in closely related fields. The purpose of the meeting was to communicate the latest experimental results and to exchange new theoretical ideas on the phenomenology of neutrinos within and beyond the standard model of particle physics, as well as in astrophysics and cosmology.Results from past and present laboratory experiments were presented at the conference, and they have yielded...