The liquid-liquid equilibria were determined in the ternary systems toluene + phenol or 2-cresol or 3-cresol or 4-cresol water and ethylbenzene + phenol or 2-cresol or 3-cresol or 4-cresol + water at atmospheric pressure at temperatures of 298.15 K and 313.15 K or 323.15 K by photometric turbidity titration. The liquid liquid equilibria in the ternary systems were predicted with the excess Gibbs energy models NRTL and UNIQUAC as well as the Elliott-Suresh-Donohue equation of state. Binary interaction parameters were calculated on the basis of available vapor liquid and liquid liquid equilibrium data and data predicted with the modified UNIFAC (Dortmund) model.