This study examines the global, regional, and national burden of Type 1 Diabetes (T1D) among adolescents and young adults aged 10–24 years, using data from the Global Burden of Disease Study 2019. The incidence of T1D increased from 7-78 per 100,000 population in 1990 to 11-07 per 100,000 population in 2019, with a 7-40% increase in mortality. The European region had the highest incidence in 2019, and middle-SDI countries experienced the largest increase in incidence between 1990 and 2019. The study highlights the need for specific measures and effective collaboration among countries with different SDIs to improve diabetes care in adolescents. The findings also show that T1D burden is more heavily affected in countries with low SDI, and there is a significant association between T1D burden and socioeconomic development. The study concludes that T1D is a growing health concern globally, particularly in low-SDI countries, and emphasizes the urgent need for improved diabetes management in this age group.This study examines the global, regional, and national burden of Type 1 Diabetes (T1D) among adolescents and young adults aged 10–24 years, using data from the Global Burden of Disease Study 2019. The incidence of T1D increased from 7-78 per 100,000 population in 1990 to 11-07 per 100,000 population in 2019, with a 7-40% increase in mortality. The European region had the highest incidence in 2019, and middle-SDI countries experienced the largest increase in incidence between 1990 and 2019. The study highlights the need for specific measures and effective collaboration among countries with different SDIs to improve diabetes care in adolescents. The findings also show that T1D burden is more heavily affected in countries with low SDI, and there is a significant association between T1D burden and socioeconomic development. The study concludes that T1D is a growing health concern globally, particularly in low-SDI countries, and emphasizes the urgent need for improved diabetes management in this age group.