679 Egyptian boys and 696 girls (aged 14 yrs) completed the Junior Eysenck Personality Questionnaire, translated into Arabic. Factor comparisons were moderately high for Extraversion and Social Desirability but weak for Neuroticism and Psychoticism. Suitable item substitution produced a scoring key resulting in adequate reliabilities with the exception of low reliabilities on Psychoticism for both sexes. Sex differences on means of the dimensions were as usual, boys scoring higher than girls on Extraversion and Psychoticism, but lower on Neuroticism and Social desirability. English boys and girls scored higher than their Egyptian counterparts on extraversion but significantly lower on social desirability. British boys scored higher on psychoticism than did Egyptian boys but British girls scored lower than Egyptian girls.