We identified the prevalence of smoking and perceived effectiveness of physicians counselling patients about smoking among 340 1st and 4th year medical students in Amman, Jordan. Smoking prevalence was 26% for males and 7% for females, similar to that of their peers in the general population. Smokers and male students were less likely to believe it is wrong for physicians to smoke in front of patients or that smoking policy or physician interaction with patients can influence smoking practices. Students believed that physicians can more effectively prevent smoking than influence patients to stop smoking. Student training on how to effectively counsel patients about smoking prevention and cessation is warranted.