The neutron sublibrary provides the evaluated nuclear data on neutron-induced reactions for 795 nuclides from H-1 to Fm-257 in the incident energy region from 10^-5 eV to 200 MeV (partially 20 MeV). The data consist of nuclear reaction cross sections, neutron scattering angular distributions, energy-angle distributions of emitted light-particles and gamma-rays, and residual nucleus productions.