Background and aim: overweight and obesity have a great impact on different organs of the body, including the respiratory system. The results of the studies indicate the effect of body measurement variables on respiratory indices in obese people. It seems that weight gain and reduced mobility lead to a drop in respiratory variables in this population. The purpose of this study is to investigate the relationship between anthropometric indices and respiratory tract resistance in young obese men. Materials and methods: The subjects included 68 obese male students of Tarbiat Modares University with an average age of 20.38±3.54 years, height 173.11±2.86 cm, weight 79.18±4.09 kg and Body mass index of 32.68 ± 3.40 kg/m2 were selected as targeted and accessible sampling. The variables of height, weight, waist circumference, waist to hip circumference ratio, body mass index and tracheal resistance indices (FVC, FEV1) were measured. Respiratory variables were evaluated using spirometry and data were analyzed using Pearson's correlation coefficient test. Findings: The results showed that there is no significant relationship between height and weight with FVC and FEV1 (P>0.05). Also, based on the results of the correlation test, there is a negative and significant relationship between waist circumference, waist to hip ratio and body mass index with FVC and FEV1 (P<0.05). Conclusion: According to the results of the present study, some respiratory indices have decreased in obese and overweight people, and this decrease may be due to accumulation of fat, especially in the abdomen and chest area, and mechanical effects on chest function.