Background: Understanding the relationship between PFTs and body composition in young adults is crucial for the early detection and management of respiratory diseases, which can have significant impacts on overall health and quality of life. Aim: The aim of this study is to investigate the correlation between PFTs and body composition in young adults and identify potential predictors of respiratory health. Hypothesis: We hypothesize that there is a significant correlation between PFTs and body composition in young adults, and that certain body composition measures may serve as predictors of respiratory health outcomes. Materials & methods: After obtaining permission from the Institutional Ethics Committee, the present study was initiated. This cross-sectional survey was conducted on the attendants of patients who visited FM Medical College in Balasore, Odisha. This investigation comprised fifty-one females and one hundred forty-two males. Statistical Analysis: The relationship between body composition and various PFT parameters was investigated using the univariate correlation coefficient (Pearson). Results: In males, there was a substantial negative correlation between body mass index and FEV1 (r=-0.198, p < 0.05) and PIFR (r=- 0.183, p=0.0023). FEV1 exhibited a substantial negative correlation with fat percentage (r=- 0.201, p=0.011). PIFR and fat free mass index exhibited a substantial negative correlation (r=-0.169, p=0.028). A substantial positive correlation was observed between FVC and fat free mass in females. (r=0.41, p=0.002). The correlation between the other parameters was not statistically significant. Conclusion: The findings of this investigation indicate that there is a substantial correlation between body composition and pulmonary function tests in young adults. The potential for personalized treatment plans based on individual test results, as well as the long-term effects of pulmonary function and body composition on overall health and well-being in young adults, could be a focus of future research in this field.