This study sought to examine the impact of tobacco use on gambling treatment. Pathological gambling (PG) is a psychiatric condition associated with significant financial, emotional, and psychosocial consequences. Elevated rates of nicotine dependence have been associated with increased gambling severity and more frequent psychiatric problems. A total of 385 treatment-seeking pathological gamblers enrolled in one of 11 gambling treatment providers in Minnesota were assessed. Linear regression modeling was used to examine demographic and clinical variables at treatment entry and the relationship between those variables and the number of days gambled at a 6-month posttreatment. Logistic regression was utilized to assess predictors of treatment completion. Daily tobacco use was reported in 244 (63.4%) subjects. Tobacco users presented with significantly more severe gambling and mental health symptoms at treatment intake. Daily tobacco use, however, was not significantly associated with the number of days gambled or with treatment completion. Although tobacco users present with greater gambling problem severity, they had similar rates of treatment completion and treatment outcomes as nonusers. (PsycINFO Database Record (c) 2012 APA, all rights reserved).