Background: Body Mass index (BMI) is one of the measurements to determine a person's nutritional status. Nutritional status is often influenced by diet, physical activity, and health status. IMT results can affect High Density Lipoprotein (HDL) levels in the body which if excessive or obese will cause dyslipidemia events characterized by decreased HDL levels. Objective: Knowing the difference in HDL levels in El-Tari Kupang Airport Workers Based on Normal BMI and Obesity. Methods: Observational analytic study using Cross Sectional design conducted on ElTari Kupang Airport workers. BMI was obtained from height and weight measurements, HDL levels were obtained through blood collection tested using Biochemistry Analyzer (BA-200) at the Laboratory of RSUD S.K Lerik Kupang, and protein frequency was obtained through Food Frequency Questionnaire (FFQ) conducted on 88 research samples that have met the inclusion criteria. Sampling using purposive sampling technique. The results of univariate and bivariate data analysis using the Mann-Whitney test. Results: The prevalence of normal BMI and obesity is 50% of people in each BMI category. HDL levels were highest in the borderline group (68.18%) then the normal group (20.46%) and the low group (11.36%). The frequency of animal and vegetable protein consumption was found to be below average. The results of bivariate analysis using Mann-Whitney showed a p value = 0.001 (p < 0.05). Conclusion: There is a significant difference between High Density Lipoprotein (HDL) levels in workers at El-tari Airport Kupang based on normal and obese Body Mass Index (BMI).