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Temperature dependence of the electrical resistivity of the Al 4 SiC 4 sintered bodies in the range of 100 1000 C was studied in this paper. Currentvoltage characteristics of the bodies showed a linear relationship, and the characteristics have an ohmic region. Electrical resistivity, obtained from the currentvoltage characteristics, exhibited insulation properties, and decreased with the porosity of the bodies. Further, the electrical resistivity varied signicantly with temperature. However, any dierence in activation energy for electrical resistivity among samples was rarely found despite the dierent porosity of them. Consequently, the porosity of the bodies did not aect the temperature dependence of electrical resistivity.