  This paper presents the recent results from Super-Kamiokande atmospheric
neutrinos and from K2K accelerator neutrinos. Both results show the signal of
neutrino oscillation, and provide new and precise information of oscillation
parameters. The oscillation parameters are constraint to be between 1.5*10^{-3}
eV^2 and 3.9*10^{-3} eV^2 for \Delta m^2 and to be greater than 0.92 for sin^2
2\theta.
