Results of the studies on physico-thermal properties of raw rice bran show that the bulk density of rice bran decreased from 284.69 to 238.81 kg/m3 with the increase of moisture content from 6.3 to 16.5 per cent (d.b.). About 74 per cent of the raw rice bran particles fall below the size of 0.30 mm only. The thermal conductivity and the specific heat of raw rice bran increased linearly from 0.065 to 0.102 Kcal/m hr0c and from 0.3685 to 0.490 Kcal/kg 0C respectively for the same increase in moisture content. The experimental data are always found to be good fit to the linear relationships developed between thermal conductivity and moisture content as well as specific heat and moisture content.