Excess molar enthalpies for the binary systems anisole + benzene, + chlorobenzene, + benzonitrile, and + nitrobenzene have been measured at 298.15 K with a Parr 1451 solution calorimeter. While the excess enthalpies are positive for benzene, those for chlorobenzene and benzonitrile are negative. The excess enthalpies for anisole + nitrobenzene change sign.