Objective: Cumulative evidence suggests that intake of caffeinated beverages, such as coffee and green tea, may have beneficial effects on metabolic syndrome (Mets). The aim of this study was to evaluate whether or not consumption of coffee or green tea was associated with the prevalence of Mets in a Korean population. Methods: We analyzed 15,568 Korean adults, aged 19-65 years, using cross-sectional data from the The Sixth Korea National Health and Nutrition Examination Survey (KNHANES Ⅵ-2, 2013-2015). Coffee consumption level was assessed based on food frequency questionnaire and 24-h recall. Demographic and lifestyle factors were assessed using self-administered questionnaires. Data on metabolic biomarkers were obtained from a health examination. Multivariate analyses were performed to clarify the association between coffee or green tea consumption and the components of metabolic syndrome. Results: The smaller was the number of components of metabolic syndrome, the higher was the level of coffee consumption, especially those who consumed coffee >3 times/day (p = 0.005) and the larger dose of coffee per cup (p < 0.001). Among all components of metabolic syndrome, high blood pressure were inversely associated with the dose of coffee per cup (SBP; p = 0.003, DBP; p = 0.045), after adjusting for sex, age, body mass index, smoking status, drinking status. However, the consumption of green tea was not significantly associated with the prevalence of metabolic syndrome or its components. Conclusion: Coffee but not green tea consumption was inversely associated with metabolic syndrome.