Neutrinos are among the fundamental particles which can be measured in the lab and have an impact on cosmological observables. CMB data verified there were three neutrinos produced in the early universe and large scale structure data can probe neutrino masses, also partially known by neutrino oscillation experiments. I will discuss the discovery potential of cosmological probes to constrain neutrino physics. http://som.ific.uv.es Carlos Peña Garay Istituto de Fisica Corpuscular (IFIC) Valencia, Spain