The GdMCr2O5 (M = Na, K, Cs) chromites were synthesized from Gd2O3, Cr2O3, and M2CO3 by solid-state reactions and have a tetragonal structure.The heat capacity of the chromites is measured from 298.15 to 673 K using a heat-pulse calorimeter.The data for GdKCr2O5 and GdCsCr2O5 show anomalies at 373 and 398 K, resp., attributable to a 2nd-order phase transition.The best fit equations for the C0p(T) data are derived.Elec. measurements in the range 303-383 K attest to semiconducting behavior of the chromites.