The objectives of this descriptive research project were to study the attitudes towards smoking and health among faculty personnel, medical students, patients and relatives at Prince of Songkla University (PSU) hospital as well as to determine the prevalence of smoking among faculty personnel and medical students and to identify the factors associated with attitudes and smoking behavior among smokers and non-smokers. Data were collected during a two-month period (May – June, 2005) from 1,417 faculty personnel, 500 medical students, and 347 patients and their relatives. The results of the study revealed all study groups had similar attitudes about the effects of tobacco on health. Ninety-nine percent agreed that cigarette smoke was hazardous to the health of both smokers and passive smokers. More than 70% believed that adults should not smoke.