Background: Obesity is a serious problem, and there have been various studies to elucidate its causes. This study aims to evaluate the relationship between obesity and proportion of supper and late-night meals among the Korean general population. Methods: The total analyzed population was 15,757 people (mean age 44.6 years). The criterion for abdominal obesity as defined by waist circumference was follows: men ≥ 90 cm, women ≥ 85 cm. Supper and late-night meals are defined as meals eaten between 6:00 p.m. and 2:00 a.m. Calories of supper and late-night meal were divided by the total calorie intake of the day and categorized into quintiles. Various variables that can affect obesity were corrected for in the model, and logistic regression models were used to confirm the relationship between supper and late-night meals and waist circumference. Results: Comparing the first quintile to the second, the third, and the fifth showed statistically significant results (Odds ratio: 1.19, 1.25, and 1.21, respectively). We also compared the breakfast group and the no breakfast group. Only the breakfast group showed statistically significant results (Odds ratio: 1.28, 1.30, 1.22, and 1.21, respectively). Conclusion: Risk of abdominal obesity will be decreased if one reduces the proportion of supper and late-night meals to half of the recommended calorie intake.