Using a quasi-isothermal flow calorimeter, measurements of the molar excess enthalpy H-m(E) al ambient pressure were performed for (methanol + alpha-methylstyrene), (ethanol + alpha-methylstyrene), and (propan-1-ol + alpha-methylstyrene) at the temperature 298.15 K covering the whole concentration range. For (methanol + alpha-methylstyrene), measurements of H-m(E) were also obtained at the temperature 313.15 K. The data were correlated by a modified Redlich-Kister equation.