α)203Hg reactions have been measured by using the activation method in the neutron energy range of 13.50-14.81 MeV. Neutron fluence dose was calibrated with the cross sections of 27Al(n
α)24Na reaction and neutron energies were determined by using the cross section ratios of 90Zr(n
2n) 89m+gZr to 93Nb(n
2n)92mNb reactions. The results obtained are compared with the published data.