In this cross-sectional, population-based study, the association between metabolic syndrome by ATP III criteria and nonfatal ischemic heart disease (IHD) defined as myocardial infarction and ischemia by Minnesota Code criteria of a 12-lead resting electrocardiogram (EKG) was assessed in 3723 Iranian subjects aged ≥25 years. Multiple logistic regression analysis adjusted for sex and age revealed that there was a significant association [OR = 1.35, CI (1.09 – 1.66), P = 0.005] between