Vapor-liquid equilibria in ternary systems were measured for ethanol + cyclohexane + water (mixture 1) at (35, 50, and 65) degreesC and isobutanol + cyclohexane + water (mixture 2) at (40 and 60) degreesC using an equilibrium still. The binary NRTL parameters for cyclohexane + water were obtained by optimization of fits to these experimentally measured data. These binary parameters were used to predict vapor-liquid equilibria for the systems 2-propanol + cyclohexane + water (mixture 3) and furanidine + cyclohexane + water (mixture 4). Excellent agreement was obtained. The mean deviation for the correlated data is 0.0207 for mixture 1 and is 0.0229 for mixture 2. The mean deviation for the predicted data is 0.0149 for mixture 3 and is 0.0110 for mixture 4.