Introduction: Dyslipidemia is defined as a lipid metabolism disorder characterized by one of the main abnormalities in the lipid fraction being an increase in triglycerides. Hypertriglyceridemia occurs with the accumulation of visceral fat and in the blood due to a decrease in the enzyme lipoprotein lipase. The accumulation of visceral fat is the cause of central obesity. Central obesity can be seen by measuring waist circumference. Aims: To determine the relationship between waist circumference with triglyceride levels in the working population at El Tari Airport, Kupang. Method: The type of research carried out was analytical observational with a cross sectional method. The respondents for this research were 60 people consisting of 41 men and 19 women workers at El Tari Kupang Airport aged 18-59 years. Data were collected using interviews and waist circumference using metline and blood samples were taken to measure triglyceride levels. The statistical tests used were the Kolmogorov-Smirnov normality test (p > 0.05) and the Pearson correlation test. Results: There were 68.3% of subjects with normal waist circumference, 31.7% with excessive waist circumference, 78.3% with normal triglyceride levels, 18.4% with slightly high triglyceride levels, and 3.3% with high triglyceride levels. The results showed that waist circumference had a positive relationship with triglyceride levels (r=0.446, p=0.000). Both showed a significant correlation with triglyceride levels (p<0.05). Conclusion: There is a significant relationship between waist circumference and triglyceride levels.