The excitation function for the reaction 115In(n,n′)115mIn was measured by the activation technique from threshold up to 4.1 MeV in 0.1-MeV steps. The absolute normalization of this excitation function has been performed at 2.1 MeV and is based on n-p scattering. The total uncertainty of the results is typically ±6% above 1 MeV. The results are in good agreement with recently published data.