The present research was conducted in order to investigate the tobacco smoker status and intensity in relation to marijuana consumption in students of Timis County, Romania. The representative sample of 2076 students in Timis county, 62.49% girls and 37.51% boys, with the mean age of 21.09 years, was included into a transversal populational study. The sample included 31.1% tobacco smokers and 67.5% nonsmokers. Regarding the tobacco smoking intensity during the previous month, 11.4% smoked between 1-5 cigarettes a day, 8% smoked between 6 and 10 cigarettes a day, 12% smoked more than 10 cigarettes a day, the consumption being significantly higher in boys than in girls. Tobacco smoker students consumed marijuana 8.3 times more frequently than nonsmokers. Heavy smoking students were more frequently marijuana co-users than those smoking tobacco at medium intensity. Tobacco smoker students consumed marijuana 11.44 times more frequently during the prevuious 30 days as compared to nonsmoker students.