The results of cycloalkylation of phenol with 1-methylcyclopentene, 1- and 3-metylcyclohexene in the presence of phosphate-containing zeolite Y as catalyst are presented. Optimal conditions of reactions in dependence on temperature, time, ratio of reacting components and quantity of catalyst, under which there were obtained maximal yield of para-substituted cycloalkylphenols have been established