Excess volume data on mixing for ternary mixtures of N,N-dimethylformamide and methyl isobutyl ketone with I-propanol, 1-butanol, 1-pentanol and 1-hexanol have been measured as a function of composition at 303.15 K. The V(E) values are negative in the mixtures of N,N-dimethylformamide and methyl isobutyl ketone with I-propanol and 1-butanol, and there is an inversion in sign in the mixtures containing 1-pentanol and 1-hexanol. The measured data are compared with predicted values based upon empirical equations.