Objectives: The purpose of this study was to identify multilevel factors (intrapersonal, interpersonal, organizational, community level) affecting problem drinking in middle-aged men. Methods: One hundred and ninety six middle-aged men in Seoul metropolitan area were recruited for this study. The data were collected from self-administered questionnaires and analyzed by chi-square test, t-test, and logistic regression with SPSS 21.0. Results: The average age of middle-aged men in the study was 46.5 years. The average level of drinking was 12.13points, which indicated problem drinking according to the AUDIT-K diagnostic criteria. The study results found that several multilevel factors increased the likelihood of problem drinking. The availability and frequency of alcohol in the residential environment, pressure to drink at the interpersonal level and social norms showed greater impact on problem drinking than intrapersonal psychological factors. Conclusion: This study suggested that it would be necessary to provide multilevel interventions for the middle aged men to create healthier environments to tackle peer pressure, social norm for drinking alcohol.