The aim of this study was to examine the impact of the obesity status on serum uric acid in health check-up examinees. The study subjects were 1,118 adults, 20 years and over (636 males, 482 females), the health package check-up at the general hospital in Gwang-Ju from January to December, 2011. This study assessed the serum uric acid, blood urea nitrogen, and creatinine levels, as well as the anthropometric variables (SBP, DBP, and BMI). In a model I, after adjusting for the variables, such as age, SBP, DBP, TC, TG, HDL-C, and FBG, the mean uric acid level ($M{\pm}SE$) increased with increasing obesity status in males (p<0.001) or females (p=0.036). In model II, after adjusting for BUN and creatinine, the mean uric acid ($M{\pm}SE$) in males increased with increasing obesity status (Normal weight [BMI <$23.0kg/m^2$], $4.89{\pm}0.07mg/dl$; overweight [BMI $23.0-24.9kg/m^2$], $5.01{\pm}0.09mg/dl$; obesity [BMI ${\geq}25.0kg/m^2$], $5.35{\pm}0.08mg/dl$) (p<0.001). In the females, however, the mean uric acid ($M{\pm}SE$) did not increase with increasing obesity status (Normal weight, $5.03{\pm}0.08mg/dl$; overweight, $5.19{\pm}0.11mg/dl$; obesity, $5.27{\pm}0.09mg/dl$) (p=0.191). In conclusion, these results suggest that an increase in obesity status is associated with an increase in the serum uric acid levels in males, but not in females.