Data are presented on the solubilities, densities, and refractive indices of the four ternary systems glycerin + MCl + H2O (M = Na, K, Rb, Cs) at (298.15 and 308.15) K and atmospheric pressure. The mass fraction of glycerin in the salt-free mixed solvent extends from 0 to 1.0. In all cases, the experiment values of solubilities were found to decrease with an increase of the concentration of glycerin. The measured solubilities, densities, and refractive indices of saturated solutions as well as densities and refractive indices of unsaturated solutions were fitted with available empirical correlations, respectively.