[en] The diffusional line broadening of iron in δ-iron telluride (Fe_0.743Te) polycrystal was measured by means of Moessbauer spectroscopy in the temperature range from 851 to 1000 K. The diffusional jump frequency and the activation energy for the diffusion of iron in δ-iron telluride obtained in this study are compared with those in β-, δ'- and ε-iron tellurides reported by the present authors previously. By assuming random walk, the diffusion coefficients of iron in δ-iron telluride are estimated from the diffusional jump frequencies for three different cases, and their results are compared with each other. (orig.)