The purpose of this study was to identify Forced Vital Capacity (FVC), Forced Expiratory Volume in 1 Second (FEV1), FEV1/FVC according to obesity in young adult women. Method: Height, weight, body mass index (BMI), and percent body fat (PBF) were obtained by using bioelectrical impedance analysis. Neck circumference (NC), waist circumference (WC) and spirometric values (FVC, FEV1, FEV1/FVC) were obtained for 135 women college students who were healthy and non smokers. Results: Mean BMI and PBF were 21.8kg/m2 and 30.5%. Obesity prevalence according to BMI and PBF were respectively 13.3%, and 50.9%. Lean body mass (LBM) was positively correlated with FVC, FEV1, and PBF was negatively correlated with FVC, FEV1 and FEV1/FVC. FVC and FEV1 of the underweight or obese group were lower than those of normal weight group. Conclusion: PBF, but not BMI, is negatively associated with pulmonary function in women college students.