Molar heat capacities of 13 methyl esters of the linear carboxylic acids from methyl octanoate to methyl eicosanoate were measured from 5 K to 350 K. The derived thermodynamic functions S-abs,S-m(T) and H-m(T) - H(0) were calculated. A correlation function for the absolute entropy at 298.15 K was found to be S-abs(n,298.15 K) = {215.94 + 31.517n} J(.)K(-1.)mol(-1), with n being the number of carbon atoms in the parent carboxylic acid minus one. The heat capacity of the liquid phases in the temperature range of 250 K to 350 K can be described by C-p(n,T) = {103.16 + 16.273n + 0.04735n(T/K)} J(.)K(-1.)mol(-1), with a mean absolute percentage deviation of 0.3%.