Dynamic viscosities have been determined for the binary mixtures diethyl carbonate + methanol., + ethanol, + 1-propanol, + 2-propanol, + 1-butanol, + 2-butanol, and + 1-pentanol at (293.15, 298.15, 303.15, and 313.15 K) and atmospheric pressure. Viscosity deviations for the binary systems were fitted to the Redlich-Kister equation. The UNIFAC-VISCO method, based on contribution groups, has been used to calculate the dynamic viscosities of the binary mixtures at the above temperatures. Root-mean-square deviations between experimental and calculated values are gathered.