Background: Tobacco consumption is the biggest enemy of public health as it is second most common cause of death worldwide. Still people smoke knowing well the consequences. In addition to the high public health costs of treating tobacco–caused diseases, tobacco kills people at the height of their productivity, depriving family of bread winners and nations of healthy workforce. Various reasons cited for tobacco use by adolescents are peer pressure, stress or for fun. Objectives: (1) To assess the magnitude of tobacco use among the male under–graduate medical students. (2)  To find out the factors associated with the use of tobacco. (3) To find out the pattern of tobacco abuse semester wise. Materials and Methods: A cross sectional study was done using a pretested, semi–structured questionnaire on 210 respondents for three months duration (September to November 2016). Data was collected and analyzed using Excel and SPSS software. Results: it was found that tobacco use was more common among students more than 25 years (63.3%) than those in 20 years or less (19.6%). This association between age and tobacco use was found to be statistically significant (p value < 0.005; ᵡ² = 14.66). Present study also shows that students from urban background of residence (51.3%) were more indulged in tobacco use as compared to those belongs to rural background (30.1%). Hostellers were found to be more frequent tobacco users as compared to day–scholars. Conclusion: Tobacco use is a significant problem among medical students and we need to take steps to stop its use by them so as to prevent them from being exposed to its hazardous effects. This will also make their role in the advocacy of the smoking cessation activities more trustworthy.