Holmium selenide Ho2Se3(cr) was synthesized and characterized by powder X-ray diffraction and energy dispersive analysis. The heat capacity of Ho2Se3(cr) has been measured by adiabatic method in the temperature range of (4.75-302.60) K. The pronounced lambda-anomalies were found in C-p,C-m(T) dependence with the maxima at temperatures T-C1 = 6.03 K and T-C2 = 228.40 K. A conclusion was drawn that the phase transition associated with antiferromagnetic ordering is observed at T-C1. The values of thermodynamic function (entropy, enthalpy and Gibbs reduced energy) were calculated from the experimental C-p(T) dependence. Absolute entropy value was used for calculation of Ho2Se3(cr) formation entropy at T = 298.15 K. (C) 2017 Elsevier Ltd.