The low-temperature heat capacity of Cs2ZrO3 was measured from T = 5 K to T = 393 K. For the standard molar entropy at T = 298.15 K, a value of (199.2 +/- 0.8)J.K-1.mol(-1) was found. The enthalpy increment of Cs2ZrO3 was measured from T = 542 K to T = 703 K using drop calorimetry. Using these results, a thermodynamic table of caesium zirconate was generated.