Super‐Kamiokande’s measurements of the solar and atmospheric neutrino flux yielded first evidence for oscillation of atmosphericv&mgr;’s intov&tgr;’s and (together with data from the SNO experiment) first evidence for oscillation of solarve’s intov&mgr;’s orv&tgr;’s. Data from Super‐Kamiokande also constrained the neutrino mixing in both cases to be large. In Super‐Kamiokande, the flux and energy spectrum of the first long baseline acceleratorv&mgr;’s were measured, they favor neutrino oscillations consistent with the atmospheric neutrino analysis. © 2003 American Institute of Physics