To determine the prevalence of smoking among male secondary school students in Bahrain and to identify their risk factors for smoking, we surveyed a random sample of students by questionnaire. The prevalence of smoking was 26.6%, 25.5% and 25.4% among first-year, second-year and third-year students respectively. Cigarettes (21.0%), water-pipes (13.0%) and cigars (1.6%) were popular. Smokers and non-smokers had similar socioeconomic profiles, but differed in degree of disapproval of smoking shown by close contacts and whether close contacts were smokers. The prevalence of smoking among male secondary-school students in Bahrain did not decline despite intense anti-smoking efforts in the last decade, perhaps indicating the effectiveness of tobacco advertising and promotions that target youth.