The purpose of the present study was to examine the relationship between children"s locus of control and their parents. In addition, this study investigated socio-demographic variables of locus of control in children and their patents. The subjects of this study were 269 elementary school children in the 5th and 6th grade and their parents. To assess children"s locus of control, the inter -external locus of control scale developed by H.K. Lee(1980) was used. The locus of control scale designed by J. W. Jo(1989) was administered to parents. The data of the study were analysed with t-test, one was ANOVA and Scheffe"s test. Also, Pearson"s correlation coefficient was computed. The results of this study were as follows. 1)There were significant differences in children"s locus of control according to the children"s sex, parent"s educational background and family income. Boys were more internal than girls. Children with parent who had higher educational backgrounds were more internal than others. Also, children in higher family income were more internal those in lower educational background and family income. Also parents with religion were more internal than those without religion. 3)children"s locus of control was significantly correlated with their parents . Paternal locus of control was significantly correlated with their daughter"s and maternal locus of control with their sons"