Purpose: This study investigated nutritional consumptions and relationships between physical health and dietary behaviors in Korean elderly. Methods: The analysis utilized data from the Korea National Health and Nutrition Examination Survey (KNHANES). A total of 1,370 elderly (≥65 years) were included. Results: Elderly with poor oral health had significantly lower nutrient intakes, except for carbohydrates and vitamin D, and elderly with low daily activity levels had significantly lower nutrient intakes, except for vitamins A, C, and D. Furthermore, subjects with high levels of depression/anxiety level had significantly lower intakes of moisture, dietary fiber, calcium, phosphorus, sodium, vitamin E, riboflavin, and folate, and those who ate breakfast less frequently had significantly higher intakes of nutrients except fat and vitamin D. Eating out was associated with significantly higher intakes of all nutrients except potassium and vitamin D. Conclusion: Nutritional intakes are influenced by chewing problems, daily activity, depression/anxiety, and frequencies of eating breakfast, eating out, and fruits.