The Q-angle, representing the angle formed between the patellar tendon and the quadriceps muscle, holds considerable significance in understanding knee biomechanics. This study focuses on the Q-angle in female athletes, recognizing their heightened vulnerability to knee injuries due to anatomical, joint laxity, and muscle strength differences. Specifically, the research targets female athletes who are engaged in volleyball, weightlifting, and boxing, comparing them to non-athletic counterparts (N = 17, age = 19 ± 3). The investigation aims to correlate Q-angle values with anthropometry, body composition parameters, foot posture, and functional tests. Anthropometric variables such as height, weight, thigh circumference, limb length, and waist-hip ratio are measured alongside body composition parameters utilizing dual x-ray absorptiometry (DXA). The Foot Posture Index-6 (FPI-6) is employed to categorize foot types, encompassing criteria like talar head palpation and calcaneal angle. Bilateral differences in Q-angle among athletes are explored, with statistical analyses performed using independent T-tests and Pearson correlations. Surprisingly, the study reveals no significant difference in both right leg Q-angle (p = 0.67) and left leg Q-angle (p = 0.30) between athletes and non-athletes. Notably, negative correlations emerge between right-leg Q-angle and bone mineral content (BMC), total bone mineral density (BMD), and hip BMD in volleyball and boxing athletes, while weightlifters exhibit no such correlations. Pronated foot posture demonstrates a significant association with right leg Q-angle (r = 0.508*) and left leg Q-angle (r = 0.514*), additionally, negative correlations surface between right-leg Q-angle and functional tests. In conclusion, this study clarifies the link between knee biomechanics and athletic performance in female athletes by offering detailed insights into the delicate interplay of Q-angle with body composition, and postural parameters.