In Saudi Arabia, tobacco use by adolescents has become a growing health concern as it is the single most important cause of chronic morbidity affecting an active age group. A high prevalence of smoking is reported in Saudi Arabia, which can be understood by reviewing the literature. Objective: This study was conducted to examine smoking prevalence among male high school students in Riyadh (KSA). Methods: A cross-sectional study was conducted in Riyadh, randomlyselected five school public high schools for males. Data were obtained from a questionnaire online. A questionnaire containing questions on personal background, smoking behavior, knowledge, and behavior and attitudes towards smoking. A total of 393 students responded to the questionnaires. Results: Of the studied group, 24 currently smoked, the prevalence of high school students smoking ranges was ascertained. The beliefs supporting smoking behaviors like effect friends correlated with changes in students' tobacco behavior. Conclusion: Results of the research indicate that the rate of smoking is weak, schools need to increase educational campaigns for schools to raise awareness about the harms and the correct ways to quit smoking.

Keywords : Smoking, Prevalence, Male students, high schools, Saudi Arabia.