Neutron nuclear data of natural silver and its isotopes (107Ag and109Ag) have been evaluated in the energy range of 10-5 eV20 MeV. Evaluated quantities are the total, elastic and inelastic scattering, capture, (n, 2n), (n, 3n), (n, p), (n, α), (n, np), (n, nα) reaction and r-ray production cross sections, the resonance parameters and the angular and energy distributions of emitted neutrons and γ-rays. The evaluation is based on available experimental data and theoretical calculations. Multi-step Hauser-Feshbach calculation played an important role in the determination of the reaction cross sections. In the calculation, the precompound process was taken into account above 5 MeV, in addition to the compound one. The evaluated data have been compiled into JENDL-3 in the ENDF-5 format. © 1990 Taylor & Francis Group, LLC.