This work aims to report liquid–liquid equilibrium (LLE) experimental data for six ternary systems of interest in esterification reactions, composed of water, oleic acid, and alcohols (ethanol, 1-propanol, isopropanol, 1-butanol, 1-hexanol, and 1-octanol) at 313.15 K. The tie lines were determined by quantification of components in biphasic systems at distinct overall compositions. The experimental results showed that as the alcohol carbonic chain length increases, its solubility decreases in the aqueous phase. The experimental data were correlated with the NRTL and UNIQUAC models. The overall deviations obtained between the experimental and calculated values ranged from (0.27 to 1.29) % and from (0.40 to 1.40) % for NRTL and UNIQUAC models, respectively, suggesting that both models are able to describe the phase behavior of the investigated systems.