Enthalpy increments for Ti5Si3(cr) were measured from 4.5 K to 350 K with an adiabatic calorimeter. From a representation of these measurements the enthalpy relative to 0 K, the entropy, and the heat capacity of Ti5Si3(cr) to 350 K were calculated. Values of the Debye temperature, Theta(D), and the coefficient for the heat capacity of the conduction electrons, gamma(el), were determined from the model. Thermodynamic properties for formation from the elements at 298.15 K were also given. Our previous value of Theta(D) for TiSi2 was revised due to improvement in the method of representation.