Viscosities and densities have been measured for hexane + butan-1-ol, + hexan-1-ol, and + octan-1-ol at 298.15 K and atmospheric pressure. Kinematic viscosities was determined using a capillary viscosimeter, and densities were measured by vibrating-tube densimetry. The viscosity deviations were evaluated. Viscosity results were fitted to the equations of Grunberg-Nissan, McAllister, Auslander, and Teja.