Different liquid state models [1-7] for viscosity suggested by Bingham, Kendall-Munroe, Eyring and Gambill have been applied to three ternary liquid systems i.e., benzene + cyclohexane + toluene, toluene + cyclohexane + carbon tetrachloride, ethanol + methanol + TAME (2 methoxy + 2 methyl butane) at 298.15 K to calculate viscosity using the properties of pure liquids [20]. Obtained values are compared with the calculated viscosity data from correlation formula [18]