The cross section for the 14N(n, 2n)13N reaction in respect of 14.7 MeV neutrons has been determined. In this experiment, the 27Al(n,p)27Mg reaction was selected as reference standard, for its generation of the nuclide 27Mg which has a half-life very close to that of 13N. The full-energy peaks of the γ-ray spectrum obtained by multi-channel pulse height spectrometer was analyzed with γ-ray energy resolution determined by means of normal probability plots. The resulting value for the cross section is 8.2±1.1 mb, which is in remarkably good agreement with the value reported in literature.