[en] We measured neutron-induced reaction cross-sections for ⁸⁹Y(n,2n)⁸⁸Y, ⁸⁹Y(n,3n)⁸⁷Y, and ⁸⁹Y(n,4n)⁸⁶Y reactions with the average neutron energy region from 15.9 to 36.3 MeV by using an activation and off-line γ-ray spectrometric technique. High energy neutrons were produced from the ⁹Be(p,n) reaction with 25-, 35- and 45-MeV proton beam from the MC-50 Cyclotron at Korea Institute of Radiological and Medical Sciences (KIRAMS). The neutron-induced reaction cross-sections of ⁸⁹Y as a function of neutron energy were calculated using the TALYS 1.6. The flux-weighted average cross-sections for ⁸⁹Y(n,xn; x = 2-4) reactions are also calculated from the TALYS values based on mono-energetic neutron and by using the neutron spectrum from MCNPX 2.6.0 code. The present results for ⁸⁹Y(n,xn; x = 2-4) reactions are compared with the flux-weighted values of TALYS and are found to be in good agreement. (author)