Volume changes on mixing of ternary Liquid mixtures of N,N-dimethylformamide and cyclohexanone with 1-alkanols have been measured as a function of composition at 303.15 K. The alkanols include 1-propanol, 1-butanol, 1-pentanol, and 1-hexanol. The ternary excess volumes were measured directly using a dilatometer. The measured data were compared with predicted values based upon an empirical relation.