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The objective of the present investigation was to extend research on metamemory and confidence calibration and discrimination to other countries using items from actual course examinations. The authors investigated gender differences in confidence judgments of 551 postsecondary students from 25 university courses in 5 countries: Israel, the Netherlands, Palestine, Taiwan, and the United States. Because important distinctions between men and women and among various countries might be hidden by examining only overall confidence, the authors analyzed students' confidence both when they were correct on each exam item and when they were incorrect. Large and significant differences were found in overall confidence, confidence when correct, and confidence when wrong, associated primarily with country and culture. In contrast, gender differences tended to be surprisingly small when viewed within countries.