This article presents a comparative analysis of early intervention systems for children with autism spectrum disorders (ASD) in various countries. The review examines regulatory frameworks, organizational models, implementation practices, types of interventions used, the role of interdisciplinary coordination, and factors influencing intervention effectiveness. It examines program accessibility, service quality variability, the impact of socioeconomic and infrastructural conditions, and strategies for adapting early intervention systems to local contexts. Based on international experience, recommendations are formulated for the development of national support systems for children with ASD. This study reflects the author's views only and does not necessarily reflect the positions of international organizations or the official recommendations of the Center for Advanced Studies at the National Agency for Social Protection of the Population.