Excess molar enthalpies and excess molar volumes at T = 298.15 K and p = 0.1 MPa are reported for (methanol, or ethanol, or 1-propanol + 1,4-dicyanobutane, or butanenitrile, or benzonitrile). For all the mixtures investigated in this work the excess molar enthalpy is large and positive. The excess molar enthalpy decreases as the carbon chain number of the alkanol species increases from methanol to propanol. The excess molar volumes are both positive and negative. The Extended Real Associated Solution and the Flory-Benson-Treszczanowicz models were used to represent the data. Both these models describe better the excess molar enthalpy than the excess molar volumes of (an alkanol + a nitrile compound).