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The Cυ(T) model for calculating shock temperature in liquids is presented as an extension of the Walsh–Christian model for metals. The model is based on an analysis showing shock temperature to be more sensitive to variations in Cυ than in (∂p / ∂T)υ, and it takes account of the temperature dependence of Cυ. Measured shock temperatures for carbon tetrachloride are compared with calculated values as a test of the constant Cυ and Cυ(T) models. The constant Cυ model overestimates shock temperature and is inappropriate to polyatomic liquids. The agreement obtained with the Cυ(T) model suggests that it will be valuable for calculating more realistic values of temperature in shock initiation studies of liquids in the neighborhood of 100 kbar.