The assessment and monitoring of body composition are imperative for sportspersons since a healthy physique plays a significant role in performance, success, and health. Consequently, sportspeople can assess their health accurately and plan their lifestyle and diet accordingly. The study aimed to analyze the body composition variables and evaluate anthropometry parameters among young sportspersons in Thiruvananthapuram, Kerala. This study was conducted on hundred sportspersons of age group 13-23 years from different colleges in Thiruvananthapuram district, Kerala. All the participants were assessed for Height, Weight, BMI, Waist circumference, Hip circumference, Waist-Hip Ratio and body composition variables such as body fat percentage, water percentage, protein percentage, obesity percentage, bone mass, muscle mass, lean body mass, metabolism, visceral fat and body age. Anthropometry parameters and Body composition variables were measured using standard methods and instruments. The results showed that the anthropometric parameters and body composition variables are statistically significant because their p-values <0.05. On the other hand, the relationship between the BMI and the observed variable, the height is not statistically significant because of its p-value (0.561) which is greater than the usual significance level of 0.05. Thus, the study revealed that there is a moderating effect in the interaction of weight and height on BMI and its effect on various health parameters among sportspeople in the Thiruvananthapuram district, Kerala. In addition to developing a complete health assessment, individuals and health practitioners can monitor body fat and muscle growth to help sportspeople define exercise, diet, and lifestyle changes accordingly, allowing them to take better control of their health with a better understanding of body composition.