BACKGROUND: Injury and illness surveillance is essential for understanding the relative risks of sports participation to develop effective strategies to optimize athlete health, wellness, and performance. Epidemiological studies examining injuries and illnesses among Team USA youth athletes are limited, particularly among athletes competing in Winter sports. The purpose of this study was to characterize the injury and illness incidence rate among Team USA athletes participating in the 2024 Winter Youth Olympic Games (YOG). METHODS: Injuries and illnesses among 101 Team USA youth athletes (40.6% female; age, 17 ± 1 years) were prospectively documented. Injury and illness prevalence, and incidence rate (IR) per 1,000 athlete-days (AD), and incidence rate ratios (IRR) were calculated with accompanying 95% confidence intervals ([95% CI]). RESULTS: Nineteen (18.8%) Team USA athletes reported at least one injury during the 2024 Winter YOG (38.0 [26.1, 53.3] injuries per 1,000 AD). Injury IR was highest among athletes competing in bobsled (166.7 [54.1, 388.9] injuries per 1,000 AD), and overuse was the most common mechanism of injury (17.3 [9.7, 28.5] injuries per 1,000 AD) among all athletes. There were no differences in injury IRs between male and female athletes (IRR [95%CI], 1.6 [0.7, 3.3]), but female athletes reported all time-loss injuries. Ten (9.9%) athletes reported at least one illness (15.0 [8.0, 26.5] per 1,000 AD), with respiratory illness (6%) being the most common type (6.9 [2.5, 15.0] per 1,000 AD). CONCLUSION: This study highlights the need for focused efforts for injury and illness prevention for youth female athletes and athletes participating in high-risk sliding sports. Additionally, consideration for implementation of respiratory illness mitigation measures and load management strategies at and leading up to future competitions for youth athletes is key.